Conveyor Equipment Manufacturers Association
5672 Strand Ct., Suite 2, Naples, Florida 34110
Tel: (239) - 514-3441 • Fax: (239) - 514-3470
Web Site: http://www.cemanet.org
E-Mail: cema@cemanet.org
Greetings CEMA Members,
The 85th CEMA Engineering Conference convened at the LaPlaya Beach Resort in Naples,
Florida from June 25 through June 27, 2012.
The conference officers this year were
• Chair: Avinash (Andy) Bhalerao, Bechtel Corporation,
• First Vice Chair – Unit: John Langsdorf, Transnorm System, Inc.,
• Second Vice Chair – Bulk: Bill Mecke, KWS Manufacturing Co., Ltd.
Attendance was the largest to date and up significantly compared to 2010: (61 vs 55) member
companies were represented by 102 vs 91 people with a total registration, including spouses,
staff, and others, of 134 vs 114 people. We had a record 31 vs 24 first time attendees which
bodes well for the future vitality of CEMA and the Engineering Conference.
We thank the conference officers, all of the attendees, and the companies they represented for
supporting this important CEMA activity despite the current lean times in the industry.
Monday's session kicked off early and featured a three hour seminar on "Finite Analysis for
Screw and Belt Conveyors", Presented by Marc A. Meadows, P.E, president of Meadows
Analysis & Design, LLC. All members attending this seminar were sent documentation of three
hours of continuing education credit in support of maintaining any current engineering
certifications.
The minutes of the following Engineering Conference Meetings are attached:
• Conveyor Safety Committee
• Bulk Section Meeting
o Bulk Conveyor Safety Sub-Committee
• Idler Committee
o Unit Conveyor Safety Sub-Committee
• Pulley Committee
• Bulk Belt Conveyor Accessories
• Screw Conveyor Committee
Committee
• Unit Handling Conveyor Committee
• Belt Book Committee
• Unit Handling Book Committee
The Conference Officers for Next Year are: Chair, John Langsdorf, Transnorm System, Inc.1st
Vice Chair (Bulk), Bill Mecke, KWS Manufacturing Company, Ltd., and 2nd Vice Chair (Unit),
Chris Glenn, Hytrol Conveyor Co., Inc.
Those Official Representatives, or their company representatives, who plan to attend the CEMA
Fall Meeting should review the minutes that apply to their business interests or CEMA product
sections. The Official Representatives attending the Fall Meeting will be called upon to decide
on any initiatives or questions referred by the Engineering Conference to the CEMA Fall
Meeting via the minutes of their meetings at the Engineering Conference.
Many thanks and best wishes,
Philip Hannigan
Executive Secretary
Encl.
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
TUESDAY, June 26 - Continued
SUNDAY, June 24
6:00 p.m. -- NEWCOMERS ORIENTATION
(First Time Attendees)
Vanderbilt A
*CEMA Newcomer Orientation, all Committee/
Section Chairs are asked to attend to welcome
the newcomers, advise what you are working on,
and invite them to your meeting.
6:30 p.m. -- GET ACQUAINTED RECEPTION / DINNER
Bayview Ballroom
MONDAY, June 25
7:00 a.m. -- BREAKFAST
(All Members/Guests)
Club
8:00 a.m. -- ENGINEERING CONFERENCE
Vanderbilt ABCD
A. Administrative Remarks, Introductions
and Conference Business
B. Seminar
"Finite Element Analysis for Screw
and Belt Conveyors"
Marc A. Meadows, P.E.
Meadows Analysis & Design, LLC
12:00 p.m. -- LUNCHEON
(All Members/Guests)
1:30 p.m. -- CEMA SAFETY COMMITTEE
8:30 a.m. -- SCREW CONVEYOR COMMITTEE
Bayview D
10:00 a.m. -- BUCKET ELEVATOR COMMITTEE
Bayview D
12:00 p.m. -- LUNCHEON
(All Members/Guests)
Club
1:00 p.m. -- UNIT HANDLING SECTION
CONTINUED + SUB COMMITTEES
Vanderbilt D
1:00 p.m. -- BULK CONVEYOR ACCESSORIES
COMMITTEE
Vanderbilt ABC
1:00 p.m. -- CONVEYOR CHAIN COMMITTEE
Bayview D
2:00 p.m. -- BELT BOOK COMMITTEE
Vanderbilt ABC
6:30 p.m. -- RECEPTION AND DINNER
(All Members/Guests)
Vanderbilt Ballroom
WEDNESDAY, June 27
7:00 a.m. -- BREAKFAST
(All Members/Guests)
8:00 a.m. -- SAFETY COMMITTEE
Club
Vanderbilt AB
1:45 p.m. -- CEMA SAFETY COMMITTEE : BULK
Vanderbilt AB
1:45 p.m. -- CEMA SAFETY COMMITTEE : UNIT
Vanderbilt CD
DINNER ON YOUR OWN
TUESDAY, June 26
7:00 a.m. -- BREAKFAST
(All Members/Guests)
Club
8:00 a.m. -- BULK HANDLING SECTION
Vanderbilt ABC
8:00 a.m. -- UNIT HANDLING CONVEYING SECTION
Vanderbilt D
8:30 a.m. -- SEQUENTIAL IDLER + PULLEY
COMMITTEES
Vanderbilt ABC
Club
Vanderbilt ABC
9:00 a.m. -- ENGINEERING CONFERENCE
COMMITTEE / SECTION REPORTS
Vanderbilt ABC
Reports: Conveyor Safety Committee
Bulk Handling Section Meeting
Bulk Conveyor Accessories Committee
Belt Book Committee
Idler Committee
Conveyor Pulley Committee
Screw Conveyor Committee
Bucket Elevator Committee
Unit Handling Section
Conference Critique
Other Business
Conference Chair's Closing Remarks
12:00 p.m. -- ADJOURNMENT OF ENGINEERING
CONFERENCE
ENGINEERING CONFERENCE
Andy Bhalerao, Bechtel Corporation......................Chair
John Langsdorf, Transnorm System Inc...........First Vice Chair
Bill Mecke, KWS Manufacturing Co., Ltd...Second Vice Chair
FUTURE CEMA MEETINGS Cont.
CEMA 86th Engineering Conference
June 23 - 26, 2013
The LaPlaya Beach & Golf Resort
Naples, Florida
ENGINEERING CONFERENCE COMMITTEES
Conveyor Controls Committee
Doug Oliphant, Kasa Companies............................Chair
Conveyor Safety Committee
Randy Skanse, Intelligrated,Inc...............................Chair
Michael McGettigan, Dematic.........................Vice Chair
Frank Loeffler, Jr., Loeffler Engineering Group........Vice Chair
Terms and Definitions Committee
Phil Hannigan, CEMA..............................................Chair
Bulk Handling Section
Andy Bhalerao, Bechtel Corporation......................Chair
Vacant...............................................................Vice Chair
Belt Conveyor Systems/Manual Committee
Todd Swinderman, Martin Engineering Company...Chair
Bulk Conveyor Accessories Committee
Brett DeVries, Flexco...............................................Chair
Judd Roseberry, Richwood Industries Inc........Vice Chair
Idler Committee
Jarrod Felton, Superior Industries...........................Chair
Tim Wolf, Precision Pulley & Idler..................Vice Chair
Conveyor Pulley Committee
David Keech, ABB Baldor-Dodge ..........................Chair
Paul D. Ross, II, Douglas Mfg. Co., Inc..........Vice Chair
Screw Conveyor Committee
Bill Mecke, KWS Manufacturing Co., Ltd.............Chair
Trevin Berger, Martin Sprocket & Gear, Inc..Vice Chair
Unit Handling Section
Chris Glenn, Hytrol Conveyor Co., Inc...................Chair
Ron Wagner, Intelligrated, Inc..........................Vice Chair
Conveyor Chain Committee
Vacant.........................................................................Chair
FUTURE CEMA MEETINGS
CEMA Fall Meeting
September 18 - 19, 2012
O’Hare Hilton
Chicago, Illinois
CEMA 80th Annual Meeting
March 15 - 19, 2013
The Biltmore Resort & Spa
Phoenix, Arizona
CEMA BOARD OF DIRECTORS
OFFICERS
RONALD D. ARKEMA................................. President
Van Gorp Corporation
WARREN CHANDLER......................... Vice President
Stephens-Adamson
JERRY HEATHMAN................................. Secretary
Chantland Pulley & Roller Company
JIM MCKNIGHT................................... Treasurer
Intelligrated, Inc.
ROBERT A. REINFRIED.......Executive Vice President
CEMA
CONVEYOR
EQUIPMENT
MANUFACTURERS
ASSOCIATION
85th
ENGINEERING
CONFERENCE
DIRECTORS
2013*
Garry Abraham...............Screw Conveyor Corporation
Dean Bogner...................................Webster Industries, Inc.
Mike Mitchell......................................Stober Drives, Inc.
Bill Pugh..............................................Ralphs-Pugh Co.
2014*
Bob Domnick..................................Superior Industries
Geoff Normanton..................................Fenner Dunlop
Paul D. Ross, II...........Douglas Manufacturing Co., Inc.
2015*
Thomas Barry...............................Cinetic Sorting Corp.
Frederick Thimmel.........................Bryant Products, Inc.
Ned Thompson...............................................Prab, Inc.
* Terms Expire
STAFF
Philip G. Hannigan.......................... Executive Secretary
Kimberly MacLaren........Mgr.Marketing/Membership Svcs.
Karen Lampart..................................Meeting Coordinator
Carroll A. Weimer, Jr................................... Legal Counsel
FINAL PROGRAM
June 24 - June 27, 2012
LaPlaya Beach & Golf Resort
Naples, Florida
Conveyor Equipment Manufacturers Association
5672 Strand Ct., Suite 2 • Naples, Florida 34110
Tel: (239) - 514-3441 • Fax: (239) - 514-3470
Web Site: http://www.cemanet.org
E-Mail: cema@cemanet.org
CEMA 85th Engineering Conference
June 24 - June 27, 2012
LaPlaya Beach Hotel
Naples, Florida
FINAL ROLL CALL
(A) New Member
(B) Speaker
(C) Guest
(D) First Engineering Meeting
(E) Engineering Conference Chairs
William Tarr
ABB Baldor-Dodge
Greenville, South Carolina
David Keech
ABB Baldor-Dodge
Greenville, South Carolina
(D) Jim Mickelson
ABB Baldor-Dodge
Greenville, South Carolina
David Kaunitz
ABB Baldor-Dodge
Greenville, South Carolina
Rob Butterworth
AFM Industries
Oshawa, ON, Canada
(D) Bob Butterworth
AFM Industries
Oshawa, ON, Canada
Joseph Roell
Argonics, Inc.
Gwinn, Michigan
(D) Lee Williams (Vicky)
ASGCO-Complete Conveyor Solutions
Allentown, Pennsylvania
Gene Renner
Automatic Systems, Inc.
Kansas City, Missouri
(E) Avinash Bhalerao
Bechtel Corp.
Houston, Texas
Edwin McDonald
Caterpillar-Belt Terminal Grps.
Pulaski, Virginia
Ed O'Neil
CCI Conveyor Pulleys-Div. of Martin S&G
Albemarle, North Carolina
Kimberly MacLaren
CEMA
Naples, Florida
Robert Reinfried (Susan)
CEMA
Naples, Florida
Philip Hannigan
CEMA
Naples, Florida
Karen Lampart
CEMA
Naples, Florida
Charles Scherrer
CinchSeal
Pennsauken, New Jersey
Chuck Leonard (Sharon)
Continental Screw Conveyor
St. Joseph, Missouri
(D) Christopher Steiner
Dematic
Grand Rapids, Michigan
Michael McGettigan
Dematic
Grand Rapids, Michigan
Paul Ross, II
Douglas Manufacturing Co., Inc.
Pell City, Alabama
(D) John Bisotti
Emerson Power Transmission
Maysville, Kentucky
(D) Robert Davis
Emerson Industrial Automation
Valparaiso, Indiana
Geoff Normanton (Roz)
Fenner Dunlop
Pittsburgh, Pennsylvania
Joseph Ostertag
Fenner Dunlop
Pittsburgh, Pennsylvania
Ian Smith
Fenner Dunlop (Fenner Drives)
Manheim, Pennsylvania
Frank Fatato
Fenner Dunlop (Fenner Drives)
Manheim, Pennsylvania
Steve Heston
Fenner Dunlop (Fenner Drives)
Manheim, Pennsylvania
John Ramsden (Janet)
Fenner Dunlop Classic Conveyor
Blairsville, Pennsylvania
Brett DeVries
FLEXCO
Grand Rapids, Michigan
Richard McConnell
FLEXCO
Downers Grove, Illinois
Greg Westphall (Sue)
FLEXCO
Downers Grove, Illinois
Ganesh Bhaskarla
FLEXCO Lemont
Lemont, Illinois
Todd Hollingsworth
FLSmidth Boise
Meridian, Idaho
(D) Jonathon Hall
FMC Technologies
Tupelo, Mississippi
(D) Mike Gusmus
FMC Technologies
Tupelo, Mississippi
Tom Hubbert
FMC Technologies
Tupelo, Mississippi
(A) Jim Proske (OJ)
Foster Wheeler USA Corporation
Houston, Texas
(D) Doug Crowder, Jr.
Frantz Manufacturing Company
Sterling, Illinois
Kyle Dir
Frantz Manufacturing Company
Sterling, Illinois
(D) Bill Hornsby
Habasit America
Suwanee, Georgia
Edward Grant
Hutchinson Belt Drive Systems
Auburn Hills, Michigan
Richard Billings
Hutchinson Belt Drive Systems
Auburn Hills, Michigan
Boyce Bonham
Hytrol Conveyor Co., Inc.
Jonesboro, Arkansas
Chris Glenn
Hytrol Conveyor Co., Inc.
Jonesboro, Arkansas
Rick Tschantz (Venita)
Imperial Technologies, Inc.
Canton, Ohio
Dwight Pentzien
Industrial Kinetics, Inc.
Downers Grove, Illinois
Bjorn Kulseng-Hansen
Industrial Kinetics, Inc.
Downers Grove, Illinois
Chris Maines
Intelligrated, Inc.
Mason, Ohio
Ron Wagner
Intelligrated, Inc.
Cincinnati, Ohio
Randy Skanse
Intelligrated, Inc.
Mason, Ohio
Joseph Kirby (Michele)
Intelligrated, Inc.
Mason, Ohio
Richard Kosik
ITOH Denki USA, Inc.
Wilkes-Barre, Pennsylvania
(A) David Myers
Jim Myers & Sons Inc.
Charlotte, North Carolina
James Wilson
Kinder Morgan
Houston, Texas
Ronald Smith
Kinder Morgan Engineering & Conveying
Houston, Texas
Derek Tatum
Kinder Morgan Engineering & Conveying
Houston, Texas
Jeff Mensch
Kinder Morgan Engineering & Conveying
Houston, Texas
(E) Bill Mecke
KWS Manufacturing Company, Ltd.
Burleson, Texas
(D) Kris Gililland (Kristie)
KWS Manufacturing Company, Ltd.
Burleson, Texas
Harold Dibben
Lassing Dibben Consulting Engineers Ltd.
Trenton, ON, Canada
Frank Loeffler, Jr. (Jean Marie)
Loeffler Engineering Group
Lago Vista, Texas
John Barickman
Martin Engineering Company
Neponset, Illinois
Todd Swinderman
Martin Engineering Company
Neponset, Illinois
Jeff Gerhart (Abby)
Martin Sprocket & Gear, Inc.
Ft. Worth, Texas
Trevin Berger (Stephanie)
Martin Sprocket & Gear, Inc.
Schnecksville, Pennsylvania
Chris Tarver
Maxi-Lift, Inc.
Addison, Texas
(C) Todd Huber
McLanahan Corp.
Hollidaysburg, Pennsylvania
(B) Marc Meadows (Marea)
Meadows Analysis & Design, LLC
Fort Worth, Texas
James Alt
NORD Gear Corporation
Waunakee, Wisconsin
(D) Mark Jones
NORD Gear Corporation
Waunakee, Wisconsin
Allen Reicks
Overland Conveyor Co. Inc.
Pella, Iowa
(D) Keith Hospodarsky
PEER Bearing Company
Waukegan, Illinois
(D) Reuben Ruggiero (Brenda)
Pioneer Conveyor LLC
Mountain Lake Park, Maryland
Darrell Knigge
Portec, Inc.
Canon City, Colorado
Joe Forte
Portec, Inc.
Canon City, Colorado
Carl Baker (Joan)
Prab, Inc.
Kalamazoo, Michigan
Tim Wolf
Precision Pulley & Idler
Pella, Iowa
Lucas Morse
Precismeca Limited
Wallaceburg, ON, Canada
Tom Anderson (Mary)
Ralphs-Pugh Co., Inc.
Benicia, California
(D) Paul Michaels
Rexnord
Milwaukee, Wisconsin
Adam Tietyen
Rexnord
Milwaukee, Wisconsin
(D) Gary Brewer
Rexnord
Milwaukee, Wisconsin
(D) Raul Morales
Rexnord
Milwaukee, Wisconsin
Judd Roseberry (Chris)
Richwood Industries, Inc.
Huntington, West Virginia
Andrew Hustrulid
Sandvik Mining and Construction
Amtsgericht Essen, HR, Germany
(D) George Houston
Richwood Industries, Inc.
Huntington, West Virginia
Dan Rice
Schneider Electric
Knightdale, North Carolina
D. Warren Knapp, P.E. (Joy)
Screw Conveyor Corporation
Hammond, Indiana
(D) Michael Griffin
Siemens Industry, Inc.
Arlington, Texas
Dan Nasato
Span Tech, LLC
Glasgow, Kentucky
(D) Billy Miller
Span Tech, LLC
Glasgow, Kentucky
Warren Chandler (Mary)
Stephens-Adamson
Belleville, ON, Canada
Corrie Godee (Pat)
Stephens-Adamson
Belleville, ON, Canada
Jamie Collins
Stober Drives, Inc.
Maysville, Kentucky
(D) Christopher Luck
Sumitomo Machinery Corp. of America
Chesapeake, Virginia
Jarrod Felton (Kari)
Superior Industries
Morris, Minnesota
(D) Jeremy Watts
TAKRAF USA, Inc
Denver, Colorado
(D) Gerhard Schmidt
TAKRAF USA, Inc
Denver, Colorado
Henk Hartsuiker
The Hendrik Group, Inc.
Woodbury, Connecticut
(E) John Langsdorf
Transnorm System, Inc.
Arlington, Texas
(D) Benjamin Roberts
TAKRAF USA, Inc
Denver, Colorado
(D) Buzz Grant (Linda)
Thomas Conveyor Company
Burleson, Texas
(D) Sergey Vaysfligel
Van Gorp Corporation
Pella, Iowa
Ron Arkema
Van Gorp Corporation
Pella, Iowa
(D) Kurt Robinson
Webster Industries, Inc.
Tiffin, Ohio
(C) Richard Spiak (Denise)
Wire Belt Company
Londonderry, New Hampshire
Robin Steven (Irene)
Veyance Technologies, Inc., Goodyear
Fairlawn, Ohio
(D) Brian Cline
Webster Industries, Inc.
Tiffin, Ohio
RE: Conveyor Equipment Manufacturers Association
85th Annual Engineering Conference, June 24-27, 2012, Seminar Summary
Session objectives:
1. Gain an appreciation and awareness of the design process as it relates to conveyors.
2. Gain an awareness and understanding of finite element analysis as it is used to design
conveyors.
1. Introduction of Meadows Analysis & Design, LLC and Marc A. Meadows, P.E.
a. Industries served
b. Tools used
c. Personnel and training
2. Designing Conveyors, What could go wrong?
a. Conveyor Design Process
i. Customer relationship and communication
ii. Internal relationship and communication
b. Finite Element Analysis as a Tool to Design Conveyors
i. What is FEA?
ii. What can FEA do?
1. Failure investigation
2. Explosion simulation in a bucket elevator
3. Design for deflection in linear motion conveyor
4. Structural analysis on large belt conveyor
5. Quick connect coupling analysis for a screw conveyor
6. Pressurized trough design for screw feeder
7. Hollow flight screw conveyor analysis
c. Further examples of FEA use in other industries and components
4150 International Plaza, Suite 600
Fort Worth, TX 76109
817.349.4460
meadowsanalylsis.com
Conveyor Equipment Manufacturers Association
COMBINED BULK/UNIT HANDLING SAFETY COMMITTEE MEETING
Monday, June 25, 2012
1. Meeting was called to order on 6/25/2011 at 1:30 PM at La Playa Resort Vanderbilt AB Room by
Chair Randy Skanse. Vice Chair Mike McGettigan was also in attendance. Separate meetings for
Bulk and Unit Handling were introduced for the first time and the Unit Handling attendees dispersed
at 1:45 for the Vanderbilt CD room. The Bulk Handling meeting resumed under the direction of 2nd
Vice Chair Frank Loeffler.
2. The Minutes of those two meetings are attached to these minutes.
Wednesday June 27, 2012
1. Meeting was called to order on 6/27/2012 at 8 AM at La Playa Resort Vanderbilt ABC Room by Chair
Randy Skanse. Vice Chair Mike McGettigan and 2nd Vice Chair Frank Loeffler were also in
attendance.
2. Meeting attendees on attached list.
3. Old Business
a. Risk Assessment- Randy Skanse reported from the Unit Handling meeting held Monday
6/25 the concensus of the group to have the ASME B20 Committee adopt language
concerning Risk Assessment. Frank Loeffler reported from the Bulk Handling meeting and
informed the group that Todd Swinderman was working on a chapter in the Belt Book on
Risk Assessment. A suggestion to add a similar chapter in the Unit Handling book was met
by considerable resistance. Todd would like input from the Unit side of potential hazards of
unit conveyors. Todd would like this input soon as there is a deadline to submit the new
chapter for inclusion in the Belt Book. After some discussion, it was decided that a joint Best
Practices document was needed to cover this topic. Mike McGettigan (Dematic) agreed to
lead this combined effort. Others to volunteer included Gene Renner (Automatic Systems),
John Langsdorf (Transnorm),Rick Tschantz (Imperial), Todd Swinderman (Martin
Engineering), Frank Loeffler (Loeffler Engineering), Joe Kirby (Intelligrated), and Andrew
Hustrulid (Sandvik).
4. New Business
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
a. Crossover Best Practices Review- Randy Skanse reported from the Unit Handling meeting
the proposal to remove verbiage banning type 1 and type 2 crossovers in the state of
California. The proposal was accepted and it was suggested to add verbiage to check state
and local regulations for applicable standards.
b. Separate Safety Committees for Bulk and Unit Handling- A vote was taken and all were in
favor of holding separate meetings followed by a combined meeting. Mike McGettigan will
chair the Unit Handling meeting and Frank Loeffler will chair the Bulk Handling meeting at
the 2013 Engineering Conference.
c. Emergency Stops- Todd Hollingsworth of FLSmidth suggested that verbiage be added to the
E-stop Best Practices document concerning dynamic braking. Todd agreed to make a draft
to present to the committee for review.
5. Meeting adjourned at 9 AM. Next meeting scheduled for June 24, 2013 at LaPlaya Hotel Naples, FL.
Combined Bulk/ Unit Handling Safety Committee Attendance List - 2012 CEMA Engineering Conference 6/ 27/ 12
Name
James Alt
Avinash Bhalerao
Andrew Hustrulid
Greg Westphall
Kyle Dir
Jim Proske
Gene Renner
Raul Morales
Todd Huber
Rick Tschantz
Harold Dibben
Mark Jones
Mike Gusmus
Jon Hall
Tom Hubbert
Richard Kosik
John Langsdorf
John Bisotti
Rob Davis
Ganesh Bhaskarla
Robert A. Reinfried
Chris Luck
Todd Hollingsworth
Randy Skanse
Richard McConnell
Michael McGettigan
John Barickman
Chuck Leonard
Jamie Collins
COMPANY
NORD Gear Corporation
Bechtel Corp.
Sandvik Mining and Construction
Flexco
Frantz Manufacturing Company
Foster Wheeler
Automatic Systems
Rexnord
McLanahan Corp.
Imperial Technologies
Lassing Dibben Consulting Engineers
NORD Gear Corporation
FMC Technologies
FMC Technologies
FMC Technologies
ITOH Denki USA, Inc.
Transnorm System, Inc.
Emerson Industrial Automation
Emerson Industrial Automation
Flexco
CEMA
Sumitomo Drive Technologies
FLSmidth Boise
Intelligrated, Inc.
Flexco
Dematic
Martin Engineering
Continental Screw Conveyor
Stober Drives, Inc.
E-mail
jim.alt@nord.com
abhalera@bechtel.com
andrew.hustrulid@sandvik.com
gwestphall@flexco.com
kdir@frantz-mfg.com
jim_proske@fwhods.com
gene.renner@asi.com
raul.morales@rexnord.com
Phone Number
608-849-7300
713-235-3679
49-173-201-6383
630-971-0150
815-622-2427
713-9298066
816-356-0660
414-213-2184
ricktschantz@imperial-technologies.com
hdibben2@lassingdibben.com
mark.jones@nord.com
mike.gusmus@fmcti.com
jon.hall@fmcti.com
tom.hubbert@fmcti.com
rkosik@itohdenki.com
jlangsdorf@transnorm.com
john.bisotti@emerson.com
r.davis@emerson.com
gbhaskarla@flexco.com
bob@cemanet.org
330-418-0286
613-392-9287
608-849-7300
662-869-7478
662-869-7407
662-869-7567
570-820-8811
972-606-0303
606-564-2247
219-465-2416
630-996-3070
239-594-0066
todd.hollingsworth@flsmidth.com
randy.skanse@intelligrated.com
208-342-2653
513-701-7335
michael.mcgettigan@dematic.com
johnb@martin-eng.com
cleonard@continentalscrew.com
jwc@stober.com
616-913-5963
309-594-2384
816-233-1800
606-759-3604
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Conveyor Equipment Manufacturers Association
MINUTES OF THE CEMA ENGINEERING CONFERENCE
UNIT HANDLING SAFETY COMMITTEE MEETING
Monday June 25, 2012
1. Meeting was called to order on 6/25/2011 at 1:30 PM at La Playa Resort Vanderbilt AB Room by
Chair Randy Skanse. Vice Chair Mike McGettigan was also in attendance. Separate meetings for
Bulk and Unit Handling were introduced for the first time and the Unit Handling attendees
dispersed at 1:45 for the Vanderbilt CD room. The Bulk Handling meeting resumed under the
direction of 2nd Vice Chair Frank Loeffler.
2. Meeting attendees are on attached list.
3. The 2012 Safety Committee meeting agenda was approved by unanimous consent.
4. Meeting minutes from the 2011 Safety Committee meeting were approved with no edits or
objections.
5. Old Business
a. Risk Assessment- Bob Reinfried reported that nothing had been presented to the ASME
B20.1 committee at their annual meeting in October 2011 and that ASME member Mike
McGettigan had volunteered to draft language for the ASME B20.1 committee to review
at the October 2012 meeting. Mike gave the group an update and some discussion
followed. The consensus of the group was to table the issue until ASME acted on any
proposed draft language to the B20.1 standard at the October 2012 meeting. Since Risk
Assessment was also a topic for the Bulk Handling committee, further discussion would
take place at the combined meeting on Wednesday 6/27.
b. Area Guarding- Chris Glenn and Randy Skanse reported that no new developments
occurred over the past year and that additional volunteers with expertise in Palletizers
and Robotic Cells were needed to complete this project. John Langsdorf of Transnorm,
Chris Maines of Intelligrated, Dave Kaunitz of ABB Baldor-Dodge, and Dan Rice of
Schneider Electric agreed to participate. The scope of the project is to develop a CEMA
best practices guideline for area guarding. A first draft will be presented at next year’s
conference.
c. Safety Guidelines for 24v powered rollers- Ron Wagner reported that a study to define
high speed and high torque designations for motorized roller products still needs to be
conducted. E-stop requirements was also discussed and it was conceded that a Best
Practices document was needed for motorized roller. Ron has agreed to lead this effort
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
with the help of volunteers Rich Kosik of Itoh Denki, Boyce Bonham of Hytol, Bjorn
Hansen of Industrial Kinetics, Mike McGettigan of Dematic, and Randy Skanse of
Intelligrated. A first draft will be presented at next year’s conference.
d. Spill Guarding for Unit Handling Conveyors- Randy Skanse presented a first draft of a
Best Practices document for spill guarding taken from chapter 21 of the Unit handling
book. Chris Maines of Intelligrated voiced his concern that the illustrations do not
accurately depict common industry practice. Randy agreed to work with Chris to update
the illustrations for both the Best Practices document and the next edition of the Unit
Handling book.
e. Allowable Temperatures for Motors/Reducers in Worker Access Areas- John Langsdorf
reported his findings and cited several standards on the subject with the most
noteworthy being CENELEC Guide 29. John informed the group that the threshold for
skin burns is 44 deg C (111.2 deg F) and the degree of burn depends on the length of
time the skin remains in contact with the hot surface. John also agreed to e-mail a
power point presentation to interested parties. Bob Reinfried reported that CEMA has a
warning label designed for hot surfaces. No labels have been produced to date. Jim Alt
of Nord Gear and Dave Kaunitz of ABB Baldor-Dodge said they provide burn warnings in
their user manuals. Risk assessment was discussed as the best way to address this issue
on a case by case basis.
6. New Business
a. Egress and Maintenance Considerations- Joe Kirby of Intelligrated presented this topic
for discussion regarding the application of lift gates in conveyor systems. The group
decided that a Best Practices document was needed. Joe agreed to provide an outline
for the document. Chris Maines of Intelligrated and Boyce Bonham of Hytrol
volunteered to assist in the effort.
b. Crossover Best Practices Review- Joe Kirby presented a proposal to change the verbiage
banning the use of type 1 and type 2 crossovers in the state of California. Joe stated
that this ban only applies to the Mining Industry, not to Unit Handling systems. In the
discussion that followed, it was decided to just delete the verbiage rather than revise it.
Since Bulk Handling members also use this document, the change would be presented
to them for approval at the combined meeting on Wednesday 6/27.
c. Separate Safety Committees for Bulk and Unit Handling- A quick vote was taken to see
how the group felt about having separate committees for Bulk and Unit Handling and all
were in favor.
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
d. Nominations for 2nd Vice Chair- Boyce Bonham of Hytrol was elected to serve as 2nd
Vice Chair. Vice Chair Mike McGettigan agreed to chair next year’s Safety Committee
and 2nd Vice Chair Frank Loeffler will be assuming the role of Vice Chair. Thanks to all
for your service!
The meeting was adjourned at 4 PM and the combined Bulk/Unit Handling Safety meeting was
to resume on Wednesday 6/27.
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Conveyor Equipment Manufacturers Association
MINUTES OF THE CEMA ENGINEERING CONFERENCE
BULK HANDLING SAFETY COMMITTEE MEETING
1. Chairman Frank Loeffler, Jr. called the meeting to order at 1:30 PM on Monday, June 25, 2012. Fifty one
people were in attendance. The Attendance List is at the end of these minutes.
2. The Draft Agenda was approved.
3. The Minutes of the June 2011 Safety Committee Meeting were approved.
4. Old Items
Risk Assessment.
A common formal risk assessment process for CEMA was discussed. There was agreement
that formal risk assessment has arrived and is becoming a requirement more often than not.
While there is a requirement, there is no agreed upon process for conducting risk assessment.
The possibility that one could be developed by the ASME B20.1 committee and adopted by
CEMA was discussed. The consensus was that B20.1 is a performance standard that could
state the requirement but was not suitable to be a working program document.
B11 TR3 is a risk assessment program document but it was agreed that it is for machines, not
conveying systems and, without a program document suited to conveyors systems, accessories,
and components, there is a risk that B11 TR3 might be forced upon the conveying industry at
some time in the near future.
Both the Unit Handling book committee and the Belt Book Committee are working on risk
assessment chapters for the next editions. It was that whatever documents are produced, they
should be uniform across all CEMA Sections, Unit, Bulk Belt Conveyors, Screw and Bucket
Elevators, Accessories, and Components.
The proposed approach is that the basic common document will cover overall practice. It would
consist of common Severity Categories, Mishap Probability Categorization, and Mishap Risk
Assessment matrices.
Annexes will be devoted by the sections to identify the unique known hazards, or hazardous
situations, items, or events associated with their products along with risk reduction strategies.
Commitments:
• Robin Steven will provide Todd Swinderman with information on Belts.
• Todd Swinderman will provide link to download the full draft chapter on Risk
Assessment in the Belt Book.
• Unit and Belt Book Committees will coordinate their draft documents via e-mail
correspondence. Target will be no later than Fall Meeting.
Spill Guarding for Bulk Handling Conveyors
The Unit Handling Section has produced a good best practices recommendation for crossing
over conveyors. Two of the four crossovers are suitable for adoption for Bulk Belt Conveyors
and will be adopted for inclusion in the Belt Book. What is missing for Bulk Belt Conveyors is a
set of best practices recommendations for crossing under those conveyors. After much
discussion it was concluded as follows:
Australia and Canada have excellent standards for cross-unders. For purposes of the Belt Book,
CEMA will adapt the Theme of their recommendations, with attribution, for inclusion in the safety
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
annexes of the Belt Book.
There is a need for some recommended practices for spill protection as well as ideas for how to
identify cross under points along the length of cross country conveyors. Those ideas will also be
adapted from the Australian and Canadian standards as a start.
5. New Items
a. Safety Lighting Maintenance System Recommendation
Pivot Poles for Conveyor Stanchion Lights were discussed as a safer alternative for replacing
those bulbs.
b. A Review of the 2012 changes incorporated into ASME B-20.1
was conducted. Chairman Loeffler pointed out that the majority of the changes were made to
support the inclusion of a discussion of running nip points for Pipe/Tube Conveyors. Copies of
the affected change pages were distributed and will be an attachment to these minutes.
c. Back Stop Safety
There is apparently no good source of information on how/when to inspect Backstops with a view to
reducing the probability of their failure which can cause very dangerous safety issues on a Bulk
Belt Conveying System. After much excellent discussion, it was decided that it would be within
the resources of CEMA members to provide valuable information in this area and supplement
chapters 6 and 13.
Commitments:
• Gary Brewer, Raul Morales and Todd Hollingsworth will provide Todd Swinderman data by
August.
• Todd Swinderman will send them drafts of Chapters 13 and 6 for them to edit and provide
suggested best practices in this area.
d. Fall Protection
There is a need to alert maintenance personnel of the need to use safety tethers when conducting
operations on Bulk Belt Conveyors. The idea of developing safety signs or labels to remind
them was discussed. This idea will be developed at future meetings.
e. There was a vote to see if we should keep separate Unit and Bulk Handling Safety Committees
or have only a Joint Committee. The consensus was that the Joint Committee should stay so
that the Unit and Bulk Sections can coordinate better on safety matters of joint interest. The Unit
and Bulk Sub-Committees should continue as venues to allow work on safety topics of specific
interest to those sections where needed.
6. Potential Topics for Next Year's Engineering Conference Seminar
Failure Mode and Effects Analysis (step one before Risk Analysis begins)
7. Next Meeting – June 24, 2013 – LaPlaya Hotel, Naples, FL
8. Adjourn: There being no further business, the committee adjourned at 3:25 p.m.
Respectfully Submitted
Frank Loeffler, Chair
Atch: Summary of ASME B20-1 Changes for 2012.
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Bulk Conveyor Safety Sub-Committee Attendance List
Name
Company
E-mail
Tel.
Carl Baker
Prab, Inc.
carl.baker@prab.com
269-382-8255
John Barickman
Martin Engineering Company
johnb@martin-eng.com
309-594-2384
Av inash Bhalerao
Bechtel Corp.
abhalera@bechtel.com
713-235-3679
Ganesh Bhaskarla
FLEXCO Lemont
gbhaskarla@flex co.com
630-996-3070
606-564-2010
John Bisotti
Emerson Pow er Transmission
john.bisotti@emerson.com
Gary Brew er
Rex nord
gary .w .brew er@rex nord.com
770-331-4161
Brett DeVries
FLEXCO
bdev ries@flex co.com
616-459-3196
Harold Dibben
Lassing Dibben Consulting Engineers Ltd.
hdibben2@lassingdibben.com
613-392-9287
Jeff Gerhart
Martin Sprocket & Gear, Inc.
jgerhart@martinsprocket.com
817.258.3000
Kris Gililland
KWS Manufacturing Company , Ltd.
kgililland@kw smfg.com
817-295-2240
Corrie Godee
Stephens-Adamson
corrie.godee@metso.com
613-962-3411
Buzz Grant
Thomas Conv ey or Company
bgrant@thomasconv ey or.com
817.295.7151
Mike Gusmus
FMC Technologies
mike.gusmus@fmcti.com
662-869-7478
Jonathon Hall
FMC Technologies
jon.hall@fmcti.com
662-869-7407
Philip Hannigan
CEMA
phil@cemanet.org
239-514-3441
Todd Hollingsw orth
FLSmidth Boise
todd.hollingsw orth@flsmidth.com
208-342-2653x 123
Keith Hospodarsky
PEER Bearing Company
khospodarsky @peerbearing.com
847-578-1000
Tom Hubbert
FMC Technologies
tom.hubbert@fmcti.com
662-869-7567
Todd Huber
McLanahan Corp.
thuber@mclanahan.com
814-695-9807
Andrew Hustrulid
Sandv ik Mining and Construction
andrew .hustrulid@sandv ik.com
49.173.201.6383
Mark Jones
NORD Gear Corporation
mark.jones@nord.com
608.849.7300
Dav id Keech
ABB Baldor-Dodge
dw keech@baldor.com
864-382-2726
D. Warren Knapp, P.E. Screw Conv ey or Corporation
w knapp@screw conv ey or.com
219-931-1450
Chuck Leonard
cleonard@continentalscrew .com
816-233-1800
Continental Screw Conv ey or
Frank Loeffler, Jr.
Loeffler Engineering Group
loeeng@austin.rr.com
512-267-8700
Christopher Luck
Sumitomo Machinery Corp. of America
cjluck@suminet.com
757-485-3355 X844
Edw in McDonald
Caterpillar-Belt Terminal Grps.
edw in.mcdonald@cat.com
540-994-3705
Jeff Mensch
Kinder Morgan Engineering & Conv ey ing
jeffrey _mensch@kindermorgan.com
713-466-0426
Paul Michaels
Rex nord
paul.michaels@rex nord.com
414-643-2067
Jim Mickelson
ABB Baldor-Dodge
jemickelson@baldor.com
864-281-2349
Raul Morales
Rex nord
raul.morales@rex nord.com
414-937-4630
Lucas Morse
Precismeca Limited
lucasm@precismeca.ab.ca
780-955-2733
Dav id My ers
Jim My ers & Sons Inc.
dmy ers@my ersequipment.com
704.554.8397
Geoff Normanton
Fenner Dunlop
geoff.normanton@fennerdunlop.com
404-297-3081
Ed O'Neil
CCI Conv ey or Pulley s-Div . of Martin S&G
eoneil@ccipulley .com
704-982-9555
Joseph Ostertag
Fenner Dunlop
joe.ostertag@fennerdunlop.com
705-645-4431
Jim Proske
Foster Wheeler USA Corporation
jim_proske@fw hou.fw c.com
713.929.8066
John Ramsden
Fenner Dunlop Classic Conv ey or
john.ramsden@fennerdunlop.com
724-459-5261
Allen Reicks
Ov erland Conv ey or Co. Inc.
reicks@ov erlandconv ey or.com
641-628-0055
Gene Renner
Automatic Sy stems, Inc.
gene.renner@asi.com
816-313-3220
Benjamin Roberts
TAKRAF USA, Inc
benjamin.roberts@takraf.com
303-714-8050
Joseph Roell
Argonics, Inc.
jroell@argonics.com
906-226-9747
Paul Ross, II
Douglas Manufacturing Co., Inc.
pross@douglasmanufacturing.com
205-884-1200 x -100
Gerhard Schmidt
TAKRAF USA, Inc
gerhard.schmidt@takraf.com
303.714.8050
Robin Stev en
Vey ance Technologies, Inc., Goody ear
robin_stev en@v ey ance.com
937-644-8909
Todd Sw inderman
Martin Engineering Company
todds@martin-eng.com
386-589-4384
Rick Tschantz
Imperial Technologies, Inc.
ricktschantz@imperial-technologies.com
330-491-3200
Jeremy Watts
TAKRAF USA, Inc
jeremy .w atts@takraf.com
303-714-8050
Lee Williams
ASGCO-Complete Conv ey or Solutions
lw illiams@asgco.com
610-821-0216
James Wilson
Kinder Morgan
james_w ilson2@kindermorgan.com
281-667-9384
Tim Wolf
Precision Pulley & Idler
w olf@ppipella.com
641-628-3115
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Bulk Conveyor Safety Sub-Committee Attendance List
Name
Carl Baker
Prab, Inc.
Company
E-mail
carl.baker@prab.com
Tel.
269-382-8255
John Barickman
Martin Engineering Company
johnb@martin-eng.com
309-594-2384
Avinash Bhalerao
Bechtel Corp.
abhalera@bechtel.com
713-235-3679
Ganesh Bhaskarla
FLEXCO Lemont
gbhaskarla@flexco.com
630-996-3070
John Bisotti
Emerson Power Transmission
john.bisotti@emerson.com
606-564-2010
Gary Brewer
Rexnord
gary.w.brewer@rexnord.com
770-331-4161
Brett DeVries
FLEXCO
bdevries@flexco.com
616-459-3196
Harold Dibben
Lassing Dibben Consulting Engineers Ltd.
hdibben2@lassingdibben.com
613-392-9287
Jeff Gerhart
Martin Sprocket & Gear, Inc.
jgerhart@martinsprocket.com
817.258.3000
Kris Gililland
KWS Manufacturing Company, Ltd.
kgililland@kwsmfg.com
817-295-2240
Corrie Godee
Stephens-Adamson
corrie.godee@metso.com
613-962-3411
Buzz Grant
Thomas Conveyor Company
bgrant@thomasconveyor.com
817.295.7151
Mike Gusmus
FMC Technologies
mike.gusmus@fmcti.com
662-869-7478
Jonathon Hall
FMC Technologies
jon.hall@fmcti.com
662-869-7407
Philip Hannigan
CEMA
phil@cemanet.org
239-514-3441
Todd Hollingsworth
FLSmidth Boise
todd.hollingsworth@flsmidth.com
208-342-2653x123
Keith Hospodarsky
PEER Bearing Company
khospodarsky@peerbearing.com
847-578-1000
Tom Hubbert
FMC Technologies
tom.hubbert@fmcti.com
662-869-7567
Todd Huber
McLanahan Corp.
thuber@mclanahan.com
814-695-9807
Andrew Hustrulid
Sandvik Mining and Construction
andrew.hustrulid@sandvik.com
49.173.201.6383
Mark Jones
NORD Gear Corporation
mark.jones@nord.com
608.849.7300
David Keech
ABB Baldor-Dodge
dwkeech@baldor.com
864-382-2726
D. Warren Knapp, P.E.
Screw Conveyor Corporation
wknapp@screwconveyor.com
219-931-1450
Chuck Leonard
Continental Screw Conveyor
cleonard@continentalscrew.com
816-233-1800
512-267-8700
Frank Loeffler, Jr.
Loeffler Engineering Group
loeeng@austin.rr.com
Christopher Luck
Sumitomo Machinery Corp. of America
cjluck@suminet.com
757-485-3355 X844
Edwin McDonald
Caterpillar-Belt Terminal Grps.
edwin.mcdonald@cat.com
540-994-3705
Jeff Mensch
Kinder Morgan Engineering & Conveying
jeffrey_mensch@kindermorgan.com
713-466-0426
Paul Michaels
Rexnord
paul.michaels@rexnord.com
414-643-2067
Jim Mickelson
ABB Baldor-Dodge
jemickelson@baldor.com
864-281-2349
Raul Morales
Rexnord
raul.morales@rexnord.com
414-937-4630
Lucas Morse
Precismeca Limited
lucasm@precismeca.ab.ca
780-955-2733
David Myers
Jim Myers & Sons Inc.
dmyers@myersequipment.com
704.554.8397
Geoff Normanton
Fenner Dunlop
geoff.normanton@fennerdunlop.com
404-297-3081
Ed O'Neil
CCI Conveyor Pulleys-Div. of Martin S&G
eoneil@ccipulley.com
704-982-9555
Joseph Ostertag
Fenner Dunlop
joe.ostertag@fennerdunlop.com
705-645-4431
Jim Proske
Foster Wheeler USA Corporation
jim_proske@fwhou.fwc.com
713.929.8066
John Ramsden
Fenner Dunlop Classic Conveyor
john.ramsden@fennerdunlop.com
724-459-5261
Allen Reicks
Overland Conveyor Co. Inc.
reicks@overlandconveyor.com
641-628-0055
Gene Renner
Automatic Systems, Inc.
gene.renner@asi.com
816-313-3220
Benjamin Roberts
TAKRAF USA, Inc
benjamin.roberts@takraf.com
303-714-8050
Joseph Roell
Argonics, Inc.
jroell@argonics.com
906-226-9747
Paul Ross, II
Douglas Manufacturing Co., Inc.
pross@douglasmanufacturing.com
205-884-1200 x-100
Gerhard Schmidt
TAKRAF USA, Inc
gerhard.schmidt@takraf.com
303.714.8050
Robin Steven
Veyance Technologies, Inc., Goodyear
robin_steven@veyance.com
937-644-8909
Todd Swinderman
Martin Engineering Company
todds@martin-eng.com
386-589-4384
Rick Tschantz
Imperial Technologies, Inc.
ricktschantz@imperial-technologies.com
330-491-3200
Jeremy Watts
TAKRAF USA, Inc
jeremy.watts@takraf.com
303-714-8050
Lee Williams
ASGCO-Complete Conveyor Solutions
lwilliams@asgco.com
610-821-0216
James Wilson
Kinder Morgan
james_wilson2@kindermorgan.com
281-667-9384
Tim Wolf
Precision Pulley & Idler
wolf@ppipella.com
641-628-3115
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Conveyor Equipment Manufacturers Association
MINUTES OF THE CEMA ENGINEERING CONFERENCE
UNIT HANDLING COMMITTEE MEETING
TUESDAY, JUNE 26, 2012
1. Chris Glenn called the meeting to order at 8:00 AM.
2. Attendee introductions were made. See Attendee List at the end of these minutes.
3. The agenda was reviewed. Section 5.e “Did you know program” was moved to the first agenda item.
The agenda was then approved.
4. Previous minutes were reviewed and approved.
5. Old Business
a. CEMA Standard for Unit Handling
i. CEMA 102
1. Additions were made for controls terms and published.
ii. CEMA 401
1. No updates.
iii. CEMA 402
1. Approved changes from 2011 were published.
iv. CEMA 403
1. Approved changes from 2011 were published.
v. CEMA 404
1. A cautionary statement for high temperature applications will be drafted for
review.
vi. CEMA 405
1. No updates.
vii. CEMA 406
1. No updates.
viii. CEMA 601
1. Bob Reinfried will validate with Phil that previous updates were made and
published.
2. No updates
b. New standards for Unit Handling
i. Poly V Belt
1. Tom Anderson submitted a 1st pass fact sheet. Members were requested to
review and provide input in order to approve at the 2013 engineering meeting.
ii. Drag Chain
1. Standard draft will be submitted for review at 2013 engineering meeting.
c. CEMA Unit Handling Safety Documents
i. Noise Hazard Reduction Technical Report
1. Comments were made that in baggage applications a higher scrutiny is placed
on noise monitoring and that Canadian restrictions are tougher to meet.
a. There were no action items.
ii. Unit Handling Safety video
1. 246 units in inventory with 786 sold
2. A decision was made to set a 5 year review cycle
3. Bob R. will review the video and packaging to determine if there are any year
references.
d. Safety Documents Needed or Under Development
i. Spill Guarding
1. This topic was reviewed during the Safety Committee and action will be taken
by that committee.
ii. Crossover Best Practices
1. This topic was reviewed and approved in the Unit Handling Safety committee
and will be passed to Bulk for approval. The Safety Committee has action
ownership.
e. “Did you Know”
i. Currently 3500 in the distribution and this will transition to a CEMA event notification
with 4-5 mailings per year.
ii. “CEMA member companies in the news” is a new communication being prepared and
sent out. This is intended to be approximately monthly.
f. CEMA Application Guide for unit Handling Conveyors
i. Review sales/inventory
1. 29 sold YTD. With 330 in inventory
2. $7,700.00 in reserve
ii. Potential lead and marketing assistance
1. This discussion was tabled and turned over to the UH Book committee.
6. New Business
a. Election of Chair and Vice Chair to take effect in 2014
i. Chair – Ron Wagner
ii. Vice Chair – Rich Kosik
7. The meeting adjourned at 9:20.
Unit Handling Conveyor Committee Attendance List
Name
Company
E-mail
Tel.
Bill Hornsby
Habasit America
bill.hornsby @us.habasit.com
1-800-235-8714
Bjorn Hansen
Industrial Kinetics, Inc.
bhansen@iki.com
630-655-0300 x 107
Bob Reinfried
CEMA
bob@cemanet.org
239-514-3441
Boy ce Bonham
Hy trol Conv ey or Co., Inc.
bbonham@hy trol.com
870-974-5652
Chris Glenn
Hy trol Conv ey or Co., Inc.
cglenn@hy trol.com
870-974-5651
Chris Maines
Intelligrated, Inc.
chris.maines@intelligrated.com
513-701-7385
919.266.8787
Dan Rice
Schneider Electric
dan.rice@us.schneider-electric.com
Darrell Knigge
Portec, Inc.
darrell.knigge@portec.com
719-947-5663
Dav id Kaunitz
ABB Baldor-Dodge
dckaunitz@baldor.com
864-281-2163
Doug Crow der, Jr.
Frantz Manufacturing Company
dcrow der@frantz-mfg.com
815-625-7063
Dw ight Pentzien
Industrial Kinetics, Inc.
dpentzien@iki.com
630-655-0300
Edw ard Grant
Hutchinson Belt Driv e Sy stems
ed.grant@hutchinsonfts.com
248.597.3655
Frank Fatato
Fenner Dunlop (Fenner Driv es)
frankfatato@fennerdriv es.com
717-664-8330
Jamie Collins
Stober Driv es, Inc.
jmc@stober.com
606-757-5090
Jim Alt
NORD Gear Corporation
jim.alt@nord.com
608-849-7300
Joe Forte
Portec, Inc.
joe.forte@portec.com
719-275-7471x 229
John Langsdorf
Transnorm Sy stem, Inc.
jlangsdorf@transnorm.com
972-606-0303
Joseph Kirby
Intelligrated, Inc.
joseph.kirby @intelligrated.com
513-701-7247
Kimberly MacLaren
CEMA
kim@cemanet.org
239-514-3441
Ky le Dir
Frantz Manufacturing Company
kdir@frantz-mfg.com
815-625-7063
Mike Griffin
SIEMENS Infrastructure and Cities
michael.griffin@siemens.com
616-293-6468
Mike McGettigan
Dematic
michael.mcgettigan@dematic.com
616-913-5963
Randy Skanse
Intelligrated, Inc.
randy .skanse@intelligrated.com
513-701-7335
Rich Kosik
ITOH Denki USA, Inc.
rkosik@itohdenki.com
570-820-8811
Rick Billings
Hutchinson Belt Driv e Sy stems
richard.billings@hutchinsonfts.com
248-597-3647
Rick Spiak
Wire Belt Company
rspiak@w irebelt.com
603-518-2300
Rob Dav is
Emerson Industrial Automation
r.dav is@emerson.com
219-465-2416
Ron Wagner
Intelligrated, Inc.
ron.w agner@intelligrated.com
513-701-7393
Tom Anderson
Ralphs-Pugh Co., Inc.
tpa@ralphs-pugh.com
707-745-6363
Conveyor Equipment Manufacturers Association
MINUTES OF THE 85th CEMA ENGINEERING CONFERENCE
BELT BOOK COMMITTEE MEETING
Tuesday, June 26, 2012
1.
2.
3.
4.
5.
6.
7.
8.
Call to Order: The meeting was called to order at 2:00 PM June 26, 2012
Roll Call: The attendee list is at the end of the minutes as Table 3.
Approval of the Agenda: The Agenda was approved as presented.
Approval of the Minutes: The minutes of the 2011 EC Belt Book Committee were approved as presented.
Old Business: Comments from the 2011 EC Belt Book Committee minutes were carried over as action items for the
production of the 7th edition.
New Business:
a. ABNT Cooperation – The agreements between ABNT (Brazilian National Standards Association) and CEMA
have been finalized with a formal signing planned for early September. ABNT will produce the Belt Book in
Portuguese and sell it in Portuguese speaking countries. ABNT will pay CEMA a royalty for each book sold.
ABNT and CEMA will also be able to sell each other’s publications and be paid a commission on sales.
b. Belt Book Publishing and Security – The goal is to get the Belt Book to the publisher by the end of 2012.
CEMA is investigating methods of securing the PDF version of the Belt Book. There are no plans at this point
to offer the Belt Book in an e-book format.
c. Input from Bulk Committees – See the minutes of the Safety, Idler, Pulley and Accessory Committees. The
appropriate information from these minutes will be incorporated into the Belt Book.
d. Review of the 7th edition Chapter Drafts
i. Chapter 2 – Question on intermittent loads – Usually there is a code that governs the % of overload
that the structure must be designed to handle. Absent a code, 150% of steady state full load tension
is suggested.
ii. Chapters 6 & 8 – Request for more information on ceramic pulley lagging – No new information is
available. The Accessory Committee has formed a sub committee to look into this issue.
iii. Chapter 8 & 11 – Wing pulley maximum belt speed – It was agreed that the Pulley Committee value
of 450 fpm would remain and the Accessory Chapter 11 would state that when sealing and cleaning
the conveyor are important an upper limit of 300 fpm is suggested unless the wing pulley is
wrapped.
iv. Chapters 7, 11 and 12 – Recommended transition method – It was agreed that full trough be
recommended at the tail and ½ trough at the head for general information but that transition edge
tension at 130% of belt rated tension be the limiting design factor.
v. Chapter 12 – Feeders – A sub committee was formed to revise the section on belt feeders. See list of
action items following the minutes.
vi. Chapter 14 – Updating safety code information – Several people offered updates to code revision
dates which will be incorporated into the Belt Book.
vii. Chapter 6 – Plugged Chute and multiple loading points pull out tension calculation – A sub
committee was formed to revise the section on belt feeders. See list of action items following the
minutes.
viii. Chapter 6 – Discussion on Historical Method – It was agreed
that the version of the 5th edition
tension calculations be offered as an appendix in the 7th edition.
ix. Chapter 6 – KibR Idler indentation losses – A proposal was made for revision of this factor and the
belting manufacturers are reviewing the proposal. See list of action items following the minutes.
e. Open discussion and comments – Several topics were discussed during the sequential Idler, Pulley and
Accessory and Belt Book Committee meetings for changes or additions to the Belt Book.
i. There was discussion on recent changes to ASME B20 on guarding of pipe or tube type conveyors
idlers nip points.
ii. 7th Edition of the Belt Book Status of Drafts as of June 24, 2012 was discussed and is attached as
Table 2. It lists general needs for each chapter. Any input in any format is welcomed. Forward
comments or graphics to Todd Swinderman.
iii. Open Discussion Items for the Belt Book – See Table 1.
Adjournment: The meeting was adjourned at 4:30 PM
Next Meeting: The next meeting of the Belt Book Committee will be during the Fall Meeting September 18 and 19 in
Chicago.
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Chapter
12
14
2
13
13
Open Discussion Items – Table 1
Action Item
Trajectories – Add a case where the centrifugal force factor is close to 1.0
Fall protection when working off the belt – Add discussion on having fall protection tie-offs
and lockout tagout.
Crossovers and Crossunders – Update discussion on crossovers based on Safety Committee
minutes. Add suggestion for crossunder based on AS 1755 standard. Add note that at least
one cross over per conveyor or one every 1000 ft. of conveyor is suggested. Add note that
signage should be provided stating to use only designated crossover or crossunder.
Backstops – Make recommendations for testing or inspection of backstops. Provide
discussion of using backstops on dual motor drives. Add suggestion on guarding of low speed
backstop torque arms.
16
E-stop language in Unit Handling Best Practices to be modified to caution against dead switch
e-stop for high-tension conveyors.
Accessory Committee to provide Belt Cleaner application guide for incorporation into Belt
Book
Add discussion on different types of in pit crushing to Emerging Technologies Chapter.
3
Confirm that NFPA is referenced in the chapter for explosive dusts.
16
Add discussion on the application of gearless motors for very high-tension drives when
loading is beyond current gearbox technology.
16
Development of belts greater than ST 7800 raises many technical issues that need to be
addressed. Add general discussion of the issues related to high speed high capacity
conveying to Emerging Technologies Chapter
Idler Committee will provide the changes in KiT
Idler Committee to provide recommendation on what to add to the belt book regarding roll
tolerances and sampling methodology. Becoming an issue with high-speed high capacity
conveyors. What is considered high speed ~ 650 rpm?
Discussion on limitations of lagging on high tension belts. Should ST 5400 be the
recommended limit for ceramic lagging? Discuss soft start for rubber lagging as a system
issue. Any slippage is an issue for ceramic lagging as temperature quickly rises past rating of
the rubber ceramic bond.
11
5
16
16
Assigned to:
-Todd
Hollingsworth
-Todd
Swinderman
-Todd
Swinderman
-Todd
Hollingsworth
-Raul Morales
-Gary Brewer
-Ben Roberts
-John Barickman
-Andrew Hustrulid
-Todd
Hollingsworth
-Gerhard Schmidt
-Todd
Swinderman
-Michael Griffin
-William Tarr
-Robin Steven
-Jarrod Felton
-Jarrod Felton
-Jarrod Felton
5
Provide section for the Belt Book from Pulley Committee on Pulley Bearings to chapter 5.
-Robin Steven
-Judd Roseberry
-Greg Westfall
-Paul Ross
-David Keech
11
Provide revision to CEMA 575 to chapter from Accessory Committee
-John Barickman
11
Provide discussion on carryback testing for the Belt Book per Accessory Committee
recommendation
Revise PM limit to current standard of PM 2.5. Resource: Andy Bhaleroa.
-Greg Westphall
12
13
6
11
Add discussion on requirements for high efficiency motors. Change reference from 1992 to
2005.Resource: Andy Bhaleroa.
Add discussion on benefits of LRR rubber to discussion: Lower energy consumption or can
allow higher tonnage with same drive. Caution that LRR benefits subject to application at
design operating temperature range.
Research issue of carrying side idlers and limit on effectiveness vs. conveyor angle. Provide
-Todd
Swinderman
-Todd
Swinderman
-Todd
Swinderman
-Corrie Godee
13 & D
input for Chapter 11.
Add mounting arm angle tolerance statement and figure to Chapter 13 and Appendix D.
Resources: Have graphic from Adam Tietyen, John B to provide sample alignment instructions
13
General review and update of Chapter 13 Conveyor Motor Drives and Controls
15
Revise discussion on Belt Takeup wire rope sheave friction factors.
14
Risk Analysis discussion pending ASME B20 Committee meeting in October
14
Spill guarding – review unit handling best practices and adapt to Bulk. Coordinate write up
with Unit Handling.
Resource for photos: Ed O’Neil
General
-Todd
Swinderman
-John Bisotti
-David Keech
-Todd
Hollingsworth
-Chris Luck
-Robb Davis
-Harold Dibbens
-Todd
Hollingsworth
-Tim Wolf
-Todd
Swinderman
- Todd
Swinderman
Ed O’Neil
Table 1. Open Discussion Items During Belt Book Committee Meeting
7th Edition of the Belt Book Status of Drafts as of June 24, 2012 – Table 2
General Changes:
• New layout and fonts
• Used basic equations wherever possible and eliminate constants in equations but show them in examples to reduce
number of Imperial/metric equations
• Numbering all equations, added example calculations for most equations,
• Added metric values in tables and graphs
• Redo all line graphics to be consistent.
• Added reference page numbers to main topics in each Chapter TOC
• Replaced numbered lists with bullet point lists
• Belt width expanded from 96 to 120 inches
General Needs:
• Need new photos to replace dated photos in all chapters.
• Need proof readers for all tables, charts and examples to make sure calculations are correct and the metric values are
in the usual and customary form
Publishing Goal:
• Changes and new content received by September 30, 2012
• Final Draft for approval by November 30, 2012
• To the Publisher by Jan 1, 2013
Chapter
Significant Changes
What’s Needed
Cover
• New cover/new color?
• Suggestions for the cover.
1
General
• Added information on Internal
• Up to date data on conveyor vs. truck
Applications
Rate of Return for comparison
haulage
and Economics
to other means of haulage
2
Design
• Added graphic on picking idlers
• Still need input on structures and
Considerations
and 5 roll fixed idlers. Updated
corrosion
code references. Added
Canadian and Mexican code
info
3
4
Characteristics
and
Conveyability
of Bulk
Materials
Capacities Belt
Widths and
Speeds
•
Update references to standards
for testing bulk materials
•
•
Will move some of the cross
sectional area calculations from
Chapter 6 to Chapter 4
Metric belt widths vs. Imperial
belt widths established here
and used through out book
Will change Kt per Idler
Committee
•
Need agreement on metric belt widths vs.
Imperial belt widths
•
New art work/photos for idler examples.
Expand tables to 120-inch belt widths?
Need several metric equations for idler
load rating constants and calculations
Need examples reworked with new input
values
•
5
Belt Conveyor
Idlers
•
•
6
Belt Tension
and Power
Engineering
•
•
•
•
7
Belt Selection
•
•
•
General re-arrangement of
chapter.
Eliminate Basic and Historical
Methods
Use one example for all
example calculations. Added
charts listing in one place all the
input variables for the example
conveyor
Move discussion on Dynamics
from Chapter 16 to Chapter 6
Changes to KibR.
Add plugged chute calculation
General revision according to
latest ARPM Handbook
•
•
•
•
8
Pulleys and
Shafts
•
•
General update and content
clarification
Pulley Committee will add
section on pulley bearings
9
Curves
•
10
Steep Angle
Conveying
•
General review and update
11
Belt Cleaners
and
Accessories
•
Added statement about belt
cleaners and top cover wear
Transfer Points
•
12
•
•
•
•
•
•
•
•
•
Add section about
Environmental standards
compliance
•
•
•
Discuss conflict between Chapter 7 and
Chapter 11 on transitions
Formula for ½ trough distance
Better pictures of belt monitoring
accessories
New photos for dated photos in chapter
More info on motorized pulleys here or
Chapter 13
Not enough info or references in chapter
to design a pulley (i.e. shell thickness)
Need metric values for equation
constants.
Add example calculations
Better photos needed
Accessory Committee to add belt cleaner
application best practices.
Accessory Committee update to impact
bed standard
Need new section on Feeders
Need updated section on latest DEM
techniques
Need latest standards for dust and update
text
13
Conveyor Belt
Motors and
Controls
•
Very little has changed in this
chapter from the 5th edition
(1979)
•
•
•
14
15
Operation,
Maintenance
and Safety
•
Takeups
•
•
•
•
•
16
Emerging
Technologies
•
Added section on Maintenance
Staffing
Add section on risk analysis
Added section on Guarding.
Updated safety code reference
table
Updated the wire rope friction
calculation
Added section on Takeup
structure
•
Add section on Air Supported
Conveyors
•
•
CEMA
• Delete
Historical Kx &
Ky
Appendix
Installation
•
D
Standards
Table 2. 7th Edition of the Belt Book Status of Drafts as of June 24, 2012
Appendix
C
Name
Greg Westphall
John Barickman
John T. Ramsden
Chris Luck
Warren Chandler
Al Reicks
Gene Renner
William Tarr
John Bisotti
Ganesh Bhaskarla
Ed O’Neil
Rueben Ruggiero
Joe Roell
Harold Dibben
Bob Butterworth
Rob Butterworth
Tim Wolf
Lucas Morse
David Meyers
John Hall
Mike Gusmus
Tom Hubbert
Edwin McDonald
•
•
•
Add info on Motorized Pulleys here or
chapter 8
Add information on shaft mounted
reducer alignment requirements
General updating of the content and
photos is needed
Need input on Maintenance Staffing for
various applications
Need input on risk analysis
Moving Dynamics to Chapter 16
Need input from members on emerging
technologies
Discuss should the old Chapter 6 from the
5th edition be offered as a reprint?
Add information on shaft mounted
reducer alignment requirements
Roll Call – Table 3
Company
FLEXCO
Martin Engineering
Fenner Dunlop
Sumitomo Drive Technologies
Stephens Adamson
Overland Conveyor Co.
Automatic Systems, Inc.
ABB-Dodge
Emerson Industrial Automation
FLEXCO
CCI division of Martin Sprocket & Gear
Pioneer Conveyor
Argonics
Lassing Dibben
AFM Industries
AFM Industries
PPI
Presismeca Ltd
John Meyers & Sons
FMC Technologies
FMC Technologies
FMC Technologies
Caterpillar
Paul Ross
Jim Mickelson
Lee Williams
Chuck Leonard
Phil Hannigan
Ron Arkema
Todd Hollingsworth
Paul Michaels
Raul Morales
Buzz Grant
Jeff Gerhart
Sergey Vaysfligel
Bob Reinfried
Corrie Godee
Robin Steven
Jim Wilson
David Keech
Jeremy Watts
Gerhard Schmidt
Ben Roberts
Andrew Hustrulid
Henk Hartsuiker
Frank Loeffler
Rob Davis
Joe Ostertag
Geoff Normanton
Jim Proske
Rick Tschantz
Avinash Bhaleroa
George Houston
Darrell Knigge
Adam Tietyen
Jarrod Felton
Douglas Manufacturing
ABB Dodge
ASGCO Manufacturing
Continental Screw Conveyor
CEMA
Van Gorp Corp.
FL Smidth
Rexnord
Rexnord
Thomas Conveyor
Martin Sprocket & Gear
Van Gorp Corp.
CEMA
Stephens Adamson
Veyance Technologies
Kinder Morgan
ABB-Baldor-Dodge
Takraf USA, Inc.
Takraf USA, Inc.
Takraf USA, Inc.
Sandvik
The Hendrik Group Inc.
Loeffler Engineering Group
Emerson Industrial Automation
Fenner Dunlop
Fenner Dunlop
Foster Wheeler
Imperial Technologies
Bechtel
Richwood
Portec, Inc.
Rexnord
Superior Industries
Table 3. Belt Book Committee Meeting June 26, 2012 Roll Call
Conveyor Equipment Manufacturers Association
MINUTES OF THE 85th CEMA ENGINEERING CONFERENCE
Bucket Elevator Committee Meeting
LaPlaya Beach Hotel, Naples, Florida
June 26, 2012
1. Call to Order / Roll Call:
Meeting convened at 11:30 am by Warren Knapp, Chair
Roll Call: List of attendees attached.
2. Meeting Minutes Approval:
Engineering 2011 meeting minutes approved by consent.
3. Old Business:
• Bucket Elevator Standards
• It was decided by the Committee that review/approval of the followings drafts: Table of
Contents, Chapter 1, Chapter 2 and Chapter 3 would not be reviewed at this meeting.
4. New Business:
• The Committee decided that they would have attendees of the meeting volunteer to review
and develop each chapter under the “Table of Contents”. Volunteers were recorded (see
attached list) and were asked to review and/or develop their chapters and have a progress
report ready by the CEMA Fall Meeting in September. A draft of what has already been
provided will be sent to each volunteer. CEMA will assist in collecting data and provide a
working page location on the website to facilitate progress on project.
• Trevin Berger, Martin Sprocket & Gear and Bill Mecke, KWS Manufacturing, will assist in
ensuring the project stays on task.
• The Committee decided that the name of the book will be “Bucket Elevator Design
Application”
• A conference call will be set-up for the first (1st) week of September for a progress report from
all volunteers.
• A review of the Prospective Bucket Elevator Candidates was reviewed, with additions and
deletions.
Next Meeting scheduled for September 19, 2012, O’Hare Hilton.
Meeting adjourned at 12 noon.
Warren Knapp, Chair
Attachment1 – Volunteer Review List for Bucket Elevator Design Application
Attachment 2 – Suggested Reference Material
Attachment 3 – DRAFT of Bucket Elevator Design Application
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Bucket2008
Elevator Design Application – Chapter Log
Chapters
Assignment / Name
Chapter
#1 & #2
Volunteers
Chapter
#3 & #4
Volunteers
Chapter
#5
Volunteers
Chapter
#6
Volunteers
Chapter
#7 & #8
Volunteers
Chapter
#9 & #10
Volunteers
Chapter
#11
Volunteer
Chapter
#12
Volunteer
Chapter
#13
Volunteer
Chapter
#14
Volunteers
Chapter
#15
Volunteer
Chapter
#16
Gen. Description & Principal Types/App’s
Action: Review
Jeff Gerhart-Martin S&G / Chris Tarver, Maxi-Lift
Material List & Selection of type based on materials
Action: Develop & Review
Jeff Gerhart- Martin S&G
Method of filling/ unloading buckets
Action: Develop & Review
Warren Knapp, SCC & Jeff Gerhart, Martin S&G
Pulley/Sprocket size related to speed/bucket projection
Action: Develop & Review
Kris Tarver, Maxi-Lift & Trevin Berger, Martin S&G
Bucket type/spacing & Bucket shape related to mat.
Action: Develop & Review
Raul Morales, Rexnord & Kris Tarver, Maxi-Lift
Belt Selection & Belt Splices/Splicing
Action: Develop & Review
Kris Gililland, KWS Mfging (he will talk to Belt PPL)
Chain Selection
Action: Develop & Review
Kurt Robinson, Webster
Clearances
Action: Develop & Review
Warren Knapp, SCC
Calculations and Horsepower
Action: Develop & Review
Kris Gililland, KWS Mfging
Types of take-up and travel
Action: Develop & Review
Jeff Gerhart, Martin S&G & Raul Morales, Rexnord
Trajectory of material from buckets
Action: Develop & Review
Chuck Leonard, Continental Screw Conveyor
Safety and safe guards
Action: Develop & Review
2012
Due
Date
Fall
Meeting
Fall
Meeting
Fall
Meeting
Fall
Meeting
Fall
Meeting
Fall
Meeting
Fall
Meeting
Fall
Meeting
Fall
Meeting
Fall
Meeting
Fall
Meeting
Fall
Meeting
Progess
Bucket2008
Elevator Design Guide – Reference Material
Chapters
Suggested Reference Material
Chapter
#1
General
Description
Link-Belt, 400, 800, 900, 1000, Jeffrey 418, Stephens-Adamson 66
Kempe’s Engineer’s Yearbook, Material Handling Handbook
Perry’s Chemical Engineers Handbook, Mechanical Handling of Materials (T.K. Ray)
Mechanical Conveyors for Bulk Solids (H. Colijn)
Conveying Machines (A. Spivakovsky and V. Dyachkov)
Chapter
#2
Principal
Types & Applicatons
Link-Belt 1000, Jeffrey 418, Stephens-Adamson 66
Kempe's Engineer's Yearbook, Material Handling Handbook
Perry's Chemical Engineers Handbook, Mechanical Handling of Materials (T.K. Ray)
Mechanical Conveyors for Bulk Solids (H. Colijn)
DIN Standards
Conveying Machines (A. Spivakovsky and V. Dyachkov)
Chapter
#3
Material List
Link-Belt, 400, 800, 900, 1000, Jeffrey 418, Stephens-Adamson 66
Bonded Scale 1580, Feeco International Handbook (sixth printing)
Chapter
#4
Selection of
type based on
Materials
Link-Belt, 400, 800, 900, 1000, Jeffrey 418, Stephens-Adamson 66
Bonded Scale 1580, Feeco International Handbook (sixth printing)
Chapter
#5
Method of
filling &
unloading
buckets
Conveying Machines (A. Spivakovsky and V. Dyachkov)
Belt Conveyors and Bucket Elevators, Second Edition (Hetzel)
Belt Conveyors and Bucket Elevators, Third Edition (Hetzel)
GoodYear Red Book
A Practical Guide To Elevator Design
Mechanical Conveyors for Bulk Solids (H. Colijn)
Kempe's Engineer's Yearbook, Material Handling Handbook
Agricultural Process Engineering (S.M. Henderson , B.L. Perry 1955)
Reports on HS Bucket Elevator Test Laboratory Project L3260 EL1, 1952
Bulk Solids Handling, Vol 5 No.2 April 85 ISSN 0173-9980*S 20268F
Belt Service Manual, Contitech
Chapter
#6
Pulley &
Sprocket size
related to
speed /
bucket
projection
Chains for Power Transmission and Material Handling , Design and Applications Handbook, ACA
Conveying Machines (A. Spivakovsky and V. Dyachkov)
Belt Conveyors and Bucket Elevators, Second Edition (Hetzel)
Belt Conveyors and Bucket Elevators, Third Edition (Hetzel)
GoodYear Red Book
A Practical Guide To Elevator Design
Mechanical Conveyors for Bulk Solids (H. Colijn)
Kempe's Engineer's Yearbook, Material Handling Handbook
Agricultural Process Engineering (S.M. Henderson , B.L. Perry 1955)
Reports on HS Bucket Elevator Test Laboratory Project L3260 EL1, 1952
Bulk Solids Handling, Vol 5 No.2 April 85 ISSN 0173-9980*S 20268F
Chapter
#7
Bucket Type
GoodYear Red Book
Belt Service Manual Contitech
Chains for Power Transmission and Material Handling , Design and Applications Handbook, ACA
Chapter
#8
Spacing &
Bucket Shape..
Conveying Machines (A. Spivakovsky and V. Dyachkov)
DIN Standards
2012
Bucket2008
Elevator Design Guide – Reference Material
Chapter
#9
Belt Selection
GoodYear Red Book
Belt Service Manual Contitech
Scandura
B.F. Goodrich Engineering Manual IPC-73-C B-8
Chapter
#10
Belt Splices &
Splicing
B.F. Goodrich Engineering Manual IPC-73-C B-8
Belt Service Manual Contitech
GoodYear Red Book
4B, see PDF
Chapter
#11
Chain
Selection
Chains for Power Transmission and Material Handling , Design and Applications Handbook, ACA
Chapter
#12
Clearances
A Practical Guide To Elevator Design etc.
Chapter
#13
Calculations /
Horsepower
Belt Conveyors and Bucket Elevators, Second Edition (Hertzel)
Belt Conveyors and Bucket Elevators, Third Edition (Hertzel)
Mechanical Conveyors for Bulk Solids (H. Colijn)
Kempe’s Engineer’s Yearbook, Material Handling Handbook
Chapter
#14
Types of takeups & travel
Link-Belt, 400, 800, 900, 1000, Jeffrey 418, Stephens-Adamson 66
Chains for Power Transmission and Material Handling , Design and Applications Handbook, ACA
B.F. Goodrich Engineering Manual IPC-73-C B-8
Belt Service Manual Contitech
GoodYear Red Book
Chapter
#15
Trajectory of
Materials /
Buckets
GoodYear Red Book
Belt Conveyors and Bucket Elevators, Second Edition (Hertzel)
Belt Conveyors and Bucket Elevators, Third Edition (Hertzel)
Mechanical Conveyors for Bulk Solids (H. Colijn)
Kempe’s Engineer’s Yearbook, Material Handling Handbook
A Practical Guide To Elevator Design etc.
Agricultural Process Engineering (S.M. Henderson, B.L. Perry 1955)
Reports on HS Bucket Elevator Test Laboratory Project L3260 EL1, 1952
Bulk Solids Handling Vol 5 No. 2 April 85 ISSN 0173-9980*S 20268F
Chapter
#16
Safety Guards
NFPA 61, etc. OSHA 1910
2012
DRAFT
T
F
BUCKET ELEVATOR DESIGN
GUIDE
A
R
D
DRAFT
June 26, 2012
TABLE OF CONTENTS
PROPOSED TABLE OF CONTENT FOR BUCKET ELEVATORS
Introduction / History of Bucket Elevators
♦
1.
General Description
♦
2.
Principal Types and Applications of Bucket Elevators
♦
3.
Material List
♦
4.
Selection of type based on material
♦
5.
Method of Filling and Unloading of Buckets
♦
6.
Pulley / Sprocket size related to speed and bucket projection
♦
7.
Bucket type and Spacing
♦
8.
Bucket Shape related to Material
♦
9.
Belt selection
♦
10. Belt Splices and splicing
♦
11. Chain Selection
♦
12. Clearances
♦
13. Calculations and Horsepower
♦
14. Types of take-up and travel
♦
15. Trajectory of material from buckets
♦
16. Safety and safe guards.
T
F
A
R
D
History of the Bucket Elevator
Bucket elevators are the most efficient means of elevating free flowing granular materials
and most materials even some sticky materials.
Bucket elevators of the centrifugal discharge are normally used and most are of belt type.
Friable materials are best handled in continuous bucket elevators that operate at low
speeds. The continuous buckets are discharged by gravity on the back of the preceding
bucket while passing over the head pulley, thus reducing breakage caused by the
centrifugal force discharge of a centrifugal elevator. Bucket elevators usually require the
least amount of horsepower for vertical conveying of any conveying system.
The bucket elevator has been in used in the USA for many over a century. In addition, for
the most part the same basic design has been followed. Leonardo da Vinci in the 1400’s
believed art was the chief instrument of man’s search for knowledge. The ancestors of the
modern day bucket elevator first appeared at about 230 BC these devices were
predominantly used for elevating water by the use of pots attached to an endless rope. It is
believed that the water used for the famous Hanging Gardens of Semiramus was brought
up to a height of 300 feet by this means. A remarkable achievement, having regard to the
fact, that modern elevators rarely work to heights greater than 150 feet. Since this time,
the bucket elevator has gone through a period of evolution. There was a flourish of activity
in elevator design and patents between 1850 and 1930. Since that time there has been very
little new work or mathematically supported designs developed. As Leonardo da Vinic said
“Art is never finished, only abandoned”, this can be said for the design of bucket elevators,
development has been abandoned.
There are few in depth texts on bucket elevator design and/or proper application. This is
true for all types of bucket elevators. The following are example of early elevator patents
T
F
A
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D
Examples to be added later.
Bucket Elevators
2.1 GENERAL
A bucket elevator consists of a series of uniformly fed buckets mounted on an endless chain or belt which
operates over head and foot wheels. The buckets are used to elevate (usually vertically) pulverized, granular, or
lumpy materials. The material is received at the boot, raised and then discharged by passing over the head
wheel at the top, into a discharge chute. Generally this mechanism is enclosed in a casing, especially the head
and foot sections. Some elevators are self-supporting, but more often they are supported by, or at least braced
against, a structural steel frame. Bucket elevators will be discussed under the seven headings listed below.
Inclined elevators, which were seldom enclosed, were popular for handling crushed stone, but because of OSHA
regulations, will probably go out of use (see figure 1.1).
2.1.1 Centrifugal-Discharge Bucket Elevator
In centrifugal-discharge bucket elevators, the material to be elevated is dug out of the boot and discharged by
centrifugal force. They are comparatively high-speed elevators, used where the percentage and size of lumps are
at a minimum.
2.1.2 Continuous Bucket Elevator
In continuous bucket elevators, buckets closely spaced on chain or belts are designed so that material is
loaded directly into the buckets, usually through a loading leg, instead of being scooped up in the boot.
Discharge over the head wheel is accomplished by transfer of material from the discharging bucket to the front
of the preceding one, which acts as a moving chute to the fixed discharge chute. Sometimes styled Super
Capacity, large-capacity continuous-bucket elevators are made with specially designed steel buckets attached at
their sides to doublestrand long-pitch steel chain.
T
F
A
R
D
2.1.3 Positive-Discharge Bucket Elevator
The positive-discharge bucket elevator should be considered where materials tend to stick in the buckets or
where fluffy materials are handled. With its buckets at intervals on double-strand chain, this elevator picks up its
load in the boot (as does the centrifugal-discharge type), but because of its lower speed, does not depend upon
centrifugal force to discharge material from the buckets. The buckets are completely inverted by snubbing the
chains after they have passed over the head wheels, giving them opportunity for complete discharge at
relatively slow speed and horizontally as a scraper flight conveyor. Steel buckets, rigidly attached to doublestrand steel bar-link, long-pitch roller chain, travel along a continuous steel trough on the horizontal
loading run, picking up the material en route. At the lower comer upturn, a special steel comer trough is
used to fill the buckets before starting their vertical run. At the upper comer, another curved comer piece
is provided to transfer the load to the upper horizontal run, from where the “material can be discharged at
intervals through openings provided with slide gates. The discharge of the bucket is steep enough to empty as
it passes over the discharge opening. It is seldom used, because it is slow and expensive.
2.1. 4 Internal-Discharge Elevator
The internal-discharge elevator works well in continuously gently handling small bulk articles such as
bolts or small castings. Buckets are loaded internally in casing from a chute extending through one side
of the casing. Because of their infrequent use, no further space is devoted to them.
2.1.5 Bucket Elevator on Incline
A bucket elevator can operate on an incline, if the chain is guided. If the angle of inclination is over 45°
from the vertical, it is better to use an apron or pan conveyor.
2.1.6 Centrifugal vs Continuous-Bucket Elevators
Normally a centrifugal-discharge bucket elevator can handle lumps up to 1 in. if they are not more than
10% of the required capacity. When the lumps are more than 10%, the continuous buckets should be
used. Because of its lower speed and methods of loading, the continuous-bucket elevator will cause
less breakage of fragile materials. Belts should be used for corrosive material. If chain is used, it should
be heat treated, and Everdur bronze pins and stainless-steel S-shaped cotter pins should be specified.
Some material may require alloy buckets. If the material is damp or wet, even if the capacity is small, a
double-strand super-capacity continuous-bucket elevator, equipped with flat bottom buckets, or a
positive-discharge bucket elevator should be used. If there are fines present, there is the possibility of
the fines sticking to the bottom.
2.1.7 Preliminary Selection of Type
Table 2.1 tabulates the properties of the various types of elevators.
2.2 CASING
The elevator is usually enclosed in a steel casing, to provide a means of support and as a matter of
safety and dust retention. A casing can be made dust-tight, either by using a sealing medium, or
continuously welding the comer angles to the plate. Figure 2.2 shows details of dusttight construction.
These casings are regularly made with inspection cleanout doors. For free-standing elevators, structural
considerations, such as strength of the sections and the size and number of anchor bolts to resist wind,
often will dictate the narrow dimension of the casing and its composition. Steel plates with corner
angles provide a substantial support to the complete unit. Elevators are usually self- supporting and
free standing up to 30 ft, with some even up to, say, 60 ft above the boot with special design . Above
these heights, the casing are self-supporting but not free standing, and must be braced against the
building or silo for heights over 30 ft. In some cases, the head shaft supporting the complete chain and
buckets is mounted on building steel, to take the load off the casing, which then acts simply as a cover,
carrying only its own weight. Very large drives (motor and speed reducer) should be supported directly
on the building steel or tower, rather than on the elevator casing.
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2.2.1 Drives
A V -belt drive from the motor to speed reducer is recommended. Action is similar to that of a shear
pin: the belt comes off the sheaves should anything become jammed. Intermediate sections of
elevators are usually made of 12, 10 or 7 gauge steel, in sections 8-1O-ft long. These should be
designed using cold formed thin shell analysis. The casing acts as a column, and can support a very
heavy vertical load. For easy inspection inside the casing, large inspection doors are usually placed in
the intermediate section above the boot, or about 3 ft above the floor in a section that passes through
a floor. Special consideration of casings with inspection or service doors to ensure the structural
integrity is maintained. The head sections of elevators usually are designed with the hood or top cover
split, so the two parts can be easily removed for inspection. A hinged ‘door can also be located on top
of the cover, or on the inclined portion
forming part of the chute, both for inspection and when necessary for watching the discharge of
material or servicing the throat plate. For servicing the elevator, a casing should be at least 6 in. wider
than the bucket. For tall elevators, say over 75 ft, a bigger allowance should be made to prevent the
buckets from slamming against the sides of the casing. For handling explosive materials, refer to later
chapter.
2.2.2 Inspection Doors
An example of a dust tight inspection door is shown on figure 2.3. When handling fine and dusty
material, it is a necessity. This can be placed anywhere in the elevator casing, particularly in the head
and boot sections. Most manufacturers have their own design, and should be allowed to use it for
economy.
2.3 ELEVATOR PITS
Elevators generally are placed in pits, although this should be avoided wherever possible. If pits must
be used, ample space should be provided in both length and width to allow for maintenance. A good
rule is to provide a minimum clearance of 24 in. on one side and boot shaft length plus 24 in. on the
other side of the elevator. The feed inlet point of the continuous-type elevator is somewhat higher than
that of the centrifugal elevator, necessitating a deeper pit when located below ground level.
2.4 BOOT SECTION
Steel elevator boot sections should be made of not less than 10 ga steel for elevators under 30 ft (those
with very low capacity) and 0.25 in. for elevators above 30 ft. In elevators the boot section supports
either part or all of the entire unit. Removable doors and side plates can be installed in boot sections,
to make it easier to clean out the boot by hand, when and if required. In industries where products
cannot be mixed or contaminated, the boots have to be cleaned out after each operation or run. In
some cases, the entire sides of the casing are made re-movable for cleaning. Normally, the location of
the point of bottom of the inlet in a boot occurs at the center line of the boot pulley in its upper most
position or between 4 in. and 6 in above this point for centrifugal types, Two bucket spaces generally
about 20-26 in. for continuous types, above the centerline of the boot or shaft in its highest position.
An allowance of at least 6 in. below the buckets, with the take-up in the lowest position, should be
made for
cleaning-out purposes.
2.5 HEAD SECTION
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Figure 2.5 shows an elevator head section with head take-up and one method of supporting the drive
mechanism. This is a self-supporting casing. Normally, the point of discharge is located as shown on the
figure; that is, 6 in. below centerline of the head shaft, projected on a 45° line downward. An adjustable
throat plate in the bottom of the discharge spout is usually used to prevent materials from falling down
the casing to the boot.
When handling very fine and dry materials, the 6 in. vertical dimension should be made 12 in. This
provides more time for the buckets to discharge the fine material. In some cases, the head shaft
supporting the chain and buckets is mounted on building steel. The casing then acts as only a cover,
with no machinery load on it.
The head sections of elevators are made with either fixed shaft or take-up shaft. Covers should be
made split where possible so that the two parts can be easily removed for inspection and maintenance.
A door opening can be located on top of the cover or the inclined part of the discharge spout, both for
inspection and for checking the discharge of material (see figure 2.6). For dust takeoff, one connection
can be made in the boot section just above the loading hopper, and one at the discharge chute or at
the top of the elevator. Provide pipe connection at the top of each. In handling dusty material, a good
head shaft dust seal should be used
to prevent the dust from coming out of the head section of the elevator casing.
2.6 PLATFORMS AND LADDERS
On vertical elevators of any height where the head shaft cannot be easily reached by maintenance
personnel, it is necessary to include a standard steel ladder attachment to the casing, including a steel
safety guard beginning 7 ft from lower floor level, and extending to a steel platform. This platform
should be of ample size for working on, with the floor of expanded metal, grating, or diamond floor
plates. In areas where considerable snow falls and the elevator is located outdoors, an open grating
should be used to rid the platform of ice and snow and to prevent slipping. Intermediate platforms
should be provided every 30 ft or so.
Handrails should be of standard design, made of angles or piping as approved by safety
regulations. Steel toe plates about 6-in. high must be included to prevent a person’s feet from
moving off the platform. A hoist beam can be provided about four feet above the top of the elevator
casing on line of the head shaft, to assist in maintenance work. A V-belt drive from motor to
speed reducer is preferred by some because the belt will come off the sheaves should anything become
jammed.
2.7 BUCKETS
Malleable iron buckets, either continuous type or type AA, have a Brinell hardness of about 120.
Promal buckets are heat-treated, malleable-iron buckets with a Brinell hardness of 190. Buckets
should be at least four times the size of the lumps, to get required capacity and avoid spill. For a
width of bucket greater than 16 in., two strands of chain (or a belt) must be used. Charcoal,
especially, requires wide buckets on two strands of chain. All steel buckets today are made of
welded construction, either spot welded or continuously welded, depending on the fineness of
material handled. For abrasive material, heat-treated, malleable-iron or cast buckets should be
used. High-density polyethylene bucket that is used primarily in the handling of grain, feed,
cottonseed oil, salt production,
soybean oil processing, and similar products. These buckets are rustproof, shatterproof, spark
proof, and self cleaning. They weigh a third the weight of steel buckets and a fifth of malleable
iron. There also are Low-Profile (LP), designed to increase the overall capacity by closing up the
spacing on the belt. Care must be given to the selection and use of a LP bucket, it is best to use
one that has been specifically design for this application and not just a truncated standard. In light
fluffy material, four or five holes, about 1/4 in. in diameter in the bottom and 1/4 in. diameter in
the sides near the bottom, are placed to break the suction or vacuum created by the speed of the
bucket in picking up the load in the boot. In polyethylene or other similar material buckets these hole
need to be larger in diameter.
Without these holes, the light materials usually stay in the bucket and go down to the boot again,
often piling up and causing an undue strain for the buckets to pick up and, incidentally, increasing the
horsepower required. Very little if any capacity is lost through the holes. In handling hot cement or
gypsum, at 200-300oP, the holes in the bottom of the bucket help cool the material. The holes can be
used for material at higher temperatures, and the cooling can be augmented by introducing outside air
into the casing. Alternating buckets are used on wide belts to obtain a better pickup in the boot of the
elevator, and to prevent
any possible flooding of the boot with an avalanche of material coming to it. With a single bucket
extending across a wide belt and spaced apart at varying intervals, a slight void space could result as
the buckets are turning around the foot pulley. With a continuous feed, the material would tend to pile
up and finally stall the elevator (see figure 2.9). Buckets are discussed further under each type of
elevator.
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2.8 CHAIN
Malleable chains are made with a Brinell hardness of about 120. If necessary, the chain can be made
more tough by processing the malleable iron. When handling abrasive materials such as sand, gravel,
stone, or alloys, toughened malleable iron should be used (refer to paragraph 3.8.3).
Different chain manufactures have hardened chain each has different names and processes to create
this chain in general they all are about a Brinell 190 and have a gain of about 25% in ultimate strength.
It is almost impossible to get a Brinell hardness much above 190 by heat treatment. For high elevators,
say, 75 ft or over, it is also advisable to use two strands of chain. In that case, the specifications should
require the strands to be matched and tagged right- or left-hand, although they are not actually rightor left-hand design. The two strands of chain are rigidly attached to the bucket and no two chains
stretch alike during operation. To meet this specification, the manufacturer will shop-assemble these
strands of chain, to make sure that the attachments are opposite each other and to tag each strand
properly. If the erection is properly done, the buckets will be straight, even if the attachments are
slightly off. On double-strand chains, some preference has been expressed for the use of 6-in. pitch
instead of the standard 12-in. pitch, with the bucket attachments every other pitch. This is done to run
the chain more smoothly going over the head sprockets. While it is true that by shortening the pitch,
the chain will follow more closely to the circumference of the sprocket, it is doubtful that the extra
expense can be justified. Where the pitch is 18 in., a 9-in. pitch may be justified. The selection of the
type of chain, that is, malleable or steel combination, is dependent on the type of material to be
handled, capacity required, type of duty (continuous or intermittent), and height of elevator. Class C
combination chains are economical for general elevator service. SBS bushed chains are widely used for
heavy duty and high elevators or those handling abrasive materials. A variety of chain is available and
shown in manufacturers’ catalogs. Those most commonly used are shown in tables 3.2 and 3.3.
Basically, however, the SBS-110 and SBS-102B are easy to obtain and have proved themselves
satisfactory in most installations. SBS and C combination chains are used in elevators. For handling
gritty and abrasive materials and in high vertical elevators, SBS chain is preferred. Class C combination
chain is less expensive, and is used on high vertical elevators handling aggregates, cement, and similar
products. For other chains refer to table 2.3.
2.8.1 ServiceFactor
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Here are summarized service factors for only those items that are normally involved in elevator and
conveyor
work:
Uniformly loaded: 1.0
Not uniformly loaded: 1.3
Reciprocating conveyors: 1.5
Multiple Strand Factor
2 strands: 1. 7
2.8.2 Recommended Speeds
The recommended speeds for various types of elevators are shown in table 2.1. For the maximum
speeds of all
conveyor and elevator chains based on the number of teeth in the driving sprocket, refer to tables 1.5
and 1.6.
2.8.3 Chain versus Belt
Choosing between chain and belt as an elevating medium depends upon the characteristics of material
handled. Where the temperature of the belt is likely to exceed about 250°F, it is safer to use chain, and
select the best quality obtainable for the service. Hot materials up to 450°F (232°C) can be handled in
continuous buckets mounted on standard chain. If the temperature goes to 600°F (315°C), special steel
buckets mounted on hardened malleable chain should be used. Most malleable or steel chains will
stand up to 600°F (315°C). Above 600°F, heat-treated alloy chain must be used. There are hightemperature belts on the market which may be used under certain conditions. It is advisable to consult
with the belt manufacturer.
A number of manufactures offer a Wing-Type Pulley. These pulleys are installed on the boot or foot
shaft and are usually self-cleaning, offering maximum protection from belt damage as a result of lumps
or foreign material under belt. In this case, it is usually better to use chain, Whatever type of equipment
is used, due consideration should be given to the lift factor. The lowest initial cost frequently becomes
the more expensive in the long run. Most materials with lumps up to 2 1/2 in. can be handled with
chain.
Abrasive materials, such as sand and abrasive grain, should be handled by belt instead of chain because
the fine particle size could easily get into the chain joints and cause rapid wear. If any of this class of
material should be damp or wet, the belt may slip on the head pulley unless lagged with a herringbonecut-groove rubber cover. Belts should also be used for corrosive material. If chain is used, it should be
heat-treated. Corrosive materials may require alloy buckets, and Everdur bronze pins and stainless steel
S-shaped cotter pins should be specified. Usually when belts are used, on a continuous elevator,
especially outdoors, the pulley must be lagged, or covered with a rubber covering vulcanized, slide or
rough-top or with herringbone grooves cut into it, to get good contact with the belt.
When selecting a belt as an elevating medium, materials that pack and tend to build up between the belt and
pulley, as well as. rough or jagged particles that damage the belt by becoming lodged between buckets and belt,
should be avoided. To some extent, these difficulties are alleviated through the use of spacers between the
bucket and belt and wing pulleys on the foot or boot shaft. In handling lumps with sharp edges, it is usually
better to use chains. These lumps may become lodged between buckets and belt,
resulting in damage to the belt as the material is picked up in the boot, or as the belt passes over the head
pulley.
2.9 TRACTION WHEELS AND SPROCKETS
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For general-purpose installations where there are no frequent shock loads, the arm or spoke-type
sprocket is used. Plate-center sprockets (arm sprockets filled in to make a solid center) are used where
shock loads are anticipated or where the maximum allowable chain pull on heavy-duty chains is
required. Split sprockets can be furnished in arm or plate-center sprockets to facilitate mounting or
removing them from the shaft without disturbing the bearings or the shaft itself.
Hunting-tooth sprockets have an odd number of teeth, with the pitch of the teeth one-half that of
the chain. Because of the odd number of teeth, the chain barrels contact the intermediate teeth after
each revolution of the sprocket. Therefore, each tooth has one-half the number of contacts that it
would have on a regular full pitch sprocket over any period of time, thus increasing the life of the wheel
on high-speed shafts.Traction wheels (without teeth) and sprocket wheels also are made with cast-iron
solid-hub centers, and with sectional bolted rims that can be removed without disturbing the hubs in
any way, and replaced quickly with a minimum of down time. There is a growing tendency to use
traction wheels at the bottom instead of sprockets. Traction wheels cannot be used at the foot, as the
chain will slip off. There is always traction at the head because of the load. When the elevator clogs, the
traction wheel will slip. It should be used for elevators 50 ft and over, and sometimes over 35 ft when
handling abrasive materials. Some prefer to use the same sprockets at foot and head so that, in an
emergency, the foot sprocket can be used at the head, if the teeth are not too badly worn. Some
manufacturers of sprockets have developed a method of casting chrome-nickel inserts into the rim of
the sprocket to provide great strength, toughness, and abrasion-resisting qualities. Split (two-piece)
sprockets, bolted together at the rims and at the hubs, also help to reduce labor costs.
2.10 TAKE-UPS
Normally, elevators have the screw-type take-up on the foot or boot shaft unless space does not
permit. If it is
necessary to place the screw-type take-up on head shaft, the centers of the bucket elevator should not
exceed 90
ft, because the total weight of chain (or belt) plus buckets and load in buckets on up or carry side, is
hanging
on the take-up screw in tension (see figure 2.11). Wherever a head take-up is used, the next larger sized
head
shaft from that recommended should be used, as the vibration is transferred to the head shaft through
the pickup in the boot.
Gravity takeups are used on many elevators, particularly on powdery or aerated material such as cement,
lime, and gypsum. A softening effect is encountered at the pickup which must be absorbed by this
floating takeup. The frame supporting the shaft and wheel simply rides up and down in angle or channel guides,
attached to the inside of the casing. Usually there is enough weight in the complete take-up to keep it
in position but, if necessary, additional weight can be placed on the movable steel or cast steel frame (see
figures 2.12 and 2.13). The sprocket, or traction wheel, runs loose on the shaft and is kept in place by
safety collars on each side of the hub. The diameter of the hub is much larger than necessary, so that in
the event the bore of the wheel becomes sloppy, instead of discarding the wheel, it can
be bushed. No lubrication is provided since the shaft is pinned and does not rotate. Figure 3.14 shows a
head shaft equipped with a differential band brake (back-stop) that is used to prevent the up, or
carrying; side from running backward in the event of a power interruption. The backward drift is
expected to be less than 2 ft and, upon resumption of power, the brake is immediately released.
External back stops are preferred on large horse power units over ones internal to the reducer.
2.11 HORSEPOWER
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There are several formulas in use for computing horsepower. In general, they are based on two
principles:
1.
The weight of the material in the loaded buckets. The weight of the chain or belt and the weight
of the buckets on the up-run is balanced by the weight of the chain or belt and the buckets on the
down-run.
2. An allowance is made for the extra load at the boot, and for boot pulley friction. From tests, the
value has been assumed to be the equivalent of 250-500 lb of ‘load. Thus, for continuous buckets, it
will be ( 10 X 12 X wm) / s, and (30 X 12 X wm) / S for centrifugal discharge (spaced) bucket elevators.
2.12 STANDARD DESIGNS
Standard designs of elevators are given in tables 2.4, 2.5, and 2.6. It is not advisable to use the tables
for final
design. The weight of the buckets and their capacity are always subject to change, because of the
abrasiveness
of the material, the weight of the material, the size and percentage of lumps, the fluidity of the
material, the rate
of delivery of the material to the elevator, the moisture content of the material, and the speed of the
buckets.
2.13 BELTS
The widths of the belts for various size buckets is given in table 2.5. It is good practice to use no fewer
than four
plies, even for the lightest loads. For preliminary design purposes, assume the weight of the belt and
attachments to be 6.5
lb / ft of belt width.
2.14 CENTRIFUGAL-DISCHARGE BUCKET ELEVATORS
(Vertically Spaced)
2.14.1 General
A centrifugal-discharge elevator is designed to operate at a high speed, usually from 185 ft to 300 ft or
more per minute, picking up material in the boot, as it is fed to it, and discharging the material by
centrifugal force out of the buckets, as they pass over the head sprocket or pulley into a chute attached
to the elevator casing. For very fine materials, similar to gypsum and cement ( - 10 mesh to 200 mesh),
experience has shown that the speed can be reduced to about 185 fpm. The head wheel diameter will
vary between 20 in. and 31 in. Speed is critical.
Travelling slower than recommended may not allow material to be discharged by centrifugal force, and
material may come back on the return run. Travelling faster than recommended may cause material to
hit the hood and bounce back down the return run. The size of the head wheel (D, in ft) and the rpm of
the head shaft may vary, but the speed of the elevator (fpm = D X rpm) must be maintained in order to
avoid backlegging (return of material on the down run), regardless of the required capacity. For grain,
cottonseed, wood chips, and other lightweight materials, however, the double-leg casing elevator,
having buckets mounted on a belt and travelling at higher speeds, is frequently used. Bucket speeds for
such units range between 350 fpm and 750 fpm, the head wheel diameter ranges from 24 in. to 84 in.,
and the spacing of the buckets will vary from bucket projection plus 2 in. to 24 in. The capacity will vary
between 14 tph and 1500 tph for material weighing 50 PCF. This type of elevator usually is enclosed in a
steel casing to provide a means of support, and as a matter of safety and dust retention.
On a centrifugal-discharge chain elevator, inclined about 30° from the vertical, the single strand of
chain can be supported on the up, or carrying side, on single flanged rollers spaced 6-8 ft on centers.
The return run can sag if there is plenty of clearance; if not, the return run can be supported by having
the buckets slide on two angles, forming a track, to keep the return run in the proper path (see figure 2.
15).
A centrifugal-discharge elevator will handle almost any kind affine or small lump materials. It
operates well when handling dry and free-flowing products such as grain, coal, petroleum coke, sand,
sugar, salt, chemicals, limestone dust, gypsum, sulfur, and cement. The size of the lumps should be 2 in.
and under, with the greater part of the volume under 1 in. If there are many 2-in. lumps, the buckets
should be at least 12-in. wide, regardless of capacity. This type of elevator should not be used for
materials containing over 10% to, say, 15% of lumps, because of the possibility of plugging in the boot,
and the difficulty in retaining lumps in the buckets
as they travel upward. It should not be used where breakage of material is to be avoided. Continuousbucket elevators should be used instead.
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2.14.2 Buckets
The size of the buckets ranges from 6 in. X 4 in. (6-in. long with 4-in. projection) to 24 in. X 15 in. The
spacing of A or AA buckets can be between 13 in. and 24 in., depending on capacity. The A buckets are
similar to AA, but are built lighter and of smaller capacity. They are seldom used. The buckets may be
malleable or cast iron, steel, or plastic. The buckets are normally attached to a single strand of chain or
belt with what are known as K attachments, spaced at intervals. The K -1 attachment has 2 holes, and
the K-2 attachment has four holes. The manufacturers’ catalogs give the type of attachment to be used
for fastening to the back of the bucket, and the
punching required for the belt. It depends on the minimum and maximum size of the bucket (refer to
table 2.7). Since the plastic buckets are not adapted for hard digging in the elevator boots, it is
advisable to place one style AA bucket (malleable iron, reinforced digging edge) on every sixth to eighth
attachment. This bucket will clean a path through the caked material in the boot of the elevator
housing, so that the plastic buckets do not have to dig, only elevate. This malleable iron bucket Should
be inspected at regular intervals for wear and corrosion.
2.14.3 Inclined Elevators
A centrifugal-discharge elevator, equipped with either chain or belt, can operate on an incline at the
same speeds as vertical elevators by welding or attaching steel fiats on back of buckets, to ride on steel
angle track attached to elevator casing sides, for both carrying and return runs. The use of this steel
angle track on return run prevents sagging ‘of chain and bucket line, saving much space. A belt can be
used instead of a chain, when necessary. Open inclined continuous bucket elevators are used in spite of
the difficulties during rainy weather when the materials hang in the buckets and do not discharge
properly. These elevators use either chain ‘or belt. Normally, units of this kind are inclined 30° from the
vertical, allowing the return run to sag (usually clearance permits this), and are not covered in any way
or protected from the weather. The machinery for these elevators can be mounted on structural
frames. The open inclined elevator are very rare because of the problems of being OSHA compliant.
2.14.4 Centrifugal-Discharge Elevator Buckets
The edges of all these buckets are reinforced for digging, and the bottom of these buckets is rounded.
The various types of buckets used in centrifugal discharge elevators are described below.
AA buckets are made of malleable iron for chain or belt mounting, They have a reinforced lip for
digging, They are the most common type in use for centrifugal discharge elevators.
2.
AA-RB buckets are the same as the AA buckets, except that the edges are thicker, They are used
for heavy service, and for abrasive materials.
3.
AC buckets (table 2.12) are made for chain mounting. The hooded back allows a closer spacing
of buckets.
5.
B buckets (table 3.13) are cast malleable iron buckets for chain or belt mounting. They are used
on inclined elevators for handling coarse materials such as stone. They will produce a clean discharge
at low speed.
6.
C buckets (table 2.14) are cast malleable iron for chain or belt mounting, and are used for finely
pulverized or wet materials that tend to stick to buckets.
1.
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2.15 CONTINUOUS-BUCKET ELEVATORS
2.15.1 General
In the continuous-bucket elevator, buckets closely spaced on chain or belt are designed so that
material is loaded directly into the buckets through a loading leg, instead of being scooped up in the
boot. It is designed to operate at a low speed. The low operating speed and the method of loading and
discharging minimizes breakage of fragile materials. These elevators are thus especially well adapted
where degradation of the material is to be minimized and where extreme dust conditions are to be
avoided. They will handle efficiently almost any kind of dry, fine, or small lump material that is not
damp. Where lumps are over 2 in., or where the 2-in.
lumps are over 10% of the capacity, super-capacity continuous-bucket elevators should be used. Feed
inlet point of the continuous-type elevator is somewhat higher than that of the centrifugal elevator,
necessitating a deeper pit when located below ground level. This elevator handles limestone, lime,
cement, dry chemicals, and ferroalloys. Such materials as fine salt, sand, clay, and many chemicals, dry
or damp, should not, generally speaking, be handled by continuous-type elevators, as the fine particles
get into the bottom of the bucket because of the V-shape. The particles clog there, will not discharge
and finally, the material piles upon itself and gets hard in the bucket until very little capacity is left.
2.15.2 Speed
The speed of a continuous-bucket elevator on chain preferably should not exceed 150 fpm. If the
material is not entirely free-flowing, the speed should be reduced to 100-125 fpm. When mounted on
belts, and when inclined, the bucket speed may be increased up to about 200 fpm. Where highly
abrasive materials are handled, reduced speeds are advisable. Generally, continuous-bucket elevators
are equipped with chain. The use of belts is preferred where dusty, abrasive material can get to the
chain joints.
2.15.3 Buckets
The buckets are not designed or intended to scoop material from the boot. Discharge of material over
the head sprocket or wheel is accomplished by transfer of material from the discharging buckets to the
front or bottom of the preceding bucket, which thus acts as a moving chute to the fixed discharge
chute attached to the elevator casing (refer to paragraph 2.15.5).
The steel buckets on this type of elevator do not have a so-called round bottom like the type AA used
on centrifugal elevators. The V shape of the bucket will fill up fast and the material will get hard, if
damp or wet material is handled, thus reducing the actual capacity of the buckets. Some
manufacturers install a filler plate in the bottom of the V or \j, either fiat or curved. This may help a
little, depending on the character of the material handled, but the possibility of material packing in this
restricted area still remains.
The loading leg is used to direct material to buckets and is attached to the casing. It fits closely
around the path of the buckets to prevent as much spillage of any fines in the material as possible,
although some fine material will go to the bottom of the boot where it can be cleaned out at intervals.
Any fines accumulating in the boot generally do not tend to hamper the operation of the elevator, and
are usually scooped up by buckets if material does not get packed or hard. For material + 1 in., a
loading leg should always be used.
The continuous-bucket elevator is quieter than the centrifugal discharge, especially when handling
lumpy
material.
2.15.4 Belts
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Usually, when belts are used, the diameter of the head pulley is larger to prevent slipping. With a belt
on a continuous elevator outdoors and not encased, the pulley must be lagged, or covered with a
rubber covering known as “rough top brand,” or with herringbone grooves cut into it, to get good
contact with the belt.
When selecting a belt as an elevating medium, materials that pack and tend to build up between the
belt and pulley, as well as rough or jagged particles which damage the belt by becoming lodged
between buckets and belt, should be avoided. To some extent, these difficulties are alleviated through
the use of wing pulleys on the foot shaft.
2.15.5 Types of Continuous Buckets
Type MF is a medium-front bucket that is not over lapping. It is the type most frequently used
for continuous bucket elevators. Small flat or curved filler pieces are welded into buckets as shown.
Refer to table 2.15 for capacity and weight.
2.
Type HF buckets are made with a high front that is not overlapping. These buckets are used for
higher capacities than medium-front buckets. Refer to table 3.16 for capacity and weight. Type LF
buckets are low-front, not overlapping buckets, designed for inclined bucket elevators or to handle
fine or damp materials that would stick or pack in buckets of other styles (refer to table 2.17).
3.
Type HFO buckets are high-front overlapping buckets. They are similar to type HF high-front
buckets but are made overlapping to prevent leakage between the buckets (refer to table 2.18).
4.
Type D buckets are generally used for crushed stone plants or concrete plants located at
construction sites (refer to table 2.19).
1.
In summary, the MF, HF, and LF buckets are not the overlapping type, and are spaced on the chain or
belt with about one in. between them so they will not foul each other because of poor assembly in the
field. Such spacing is considered good practice and allows little leakage. The overlapping buckets are
designed to actually fit into each other to prevent any leakage when discharging. All of the buckets
described are currently made of welded construction; either spot welded or continuously welded,
depending on the fineness of the material handled.
2.17 POSITIVE-DISCHARGE BUCKET ELEVATOR
T
F
A
R
D
T
F
A
R
D
Conveyor Equipment Manufacturers Association
MINUTES OF THE CEMA ENGINEERING CONFERENCE
BULK BELT CONVEYOR ACCESSORIES COMMITTEE MEETING
Tuesday, June 26, 2012 – 1:00 PM
1. The meeting was called to order at 1:00 PM by Brett DeVries. Roll call and contact info is at the
end of these minutes.
2. Reviewed and approved minutes from June 28, 2011. The 2012 agenda was presented and
approved.
3. Old Business
a. John Barickman led a review of a July 20, 2010 report on CEMA 575-2000 containing an
alternate rating method using impact energy. Discussion took place concerning the impact
energy method and its effect on the impact force calculation of a flowing stream of
material. The report contained a calculation for converting the flowing force into a
hypothetically equivalent lump which would have impact energy and could be compared to
the impact energy of actual lumps.
It was approved to move forward with a revision to the 575-2000 standard to be based on
an impact energy rating method with a recommendation to only include the equivalent
impact energy calculation for the flowing force of the material when tonnages exceed 3000
tph. John Barickman will work to rewrite the standard in conjunction with the other
standing members of the working committee and include metric unit conversions and
improved graphics. The working committee hopes to have a draft of the revised standard
before the fall CEMA meeting.
The working committee members are:
John Barickman, Martin Eng – Chair
Judd Roseberry, Richwood
Brett DeVries, FLEXCO
Joseph Roell, Argonics
b. Reviewed a draft document “Classification of Applications for Bulk Material Conveyor Belt
Cleaning”. Discussion took place concerning this document and consensus was that this
document should be considered a “guide”. The document was approved by the
Accessories committee and should be forwarded to the OR’s for a vote.
c. Greg Westphall presented a short PowerPoint on carryback test methods. After some
discussion, the Accessories committee requested Greg’s working committee present a
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
document at the 2013 Engineering conference containing recommendations of some
specific test parameters any future carryback test equipment should meet.
The members of the working committee are:
Greg Westphall, FLEXCO – Chair
Judd Roseberry, Richwood
John Barickman, Martin Engineering
Michael Heenan, ASGCO
Rick Archer, Arch Environmental
Joseph Roell, Argonics
Geoff Normanton, Fenner-Dunlop
4. There was no new business.
5. Judd Roseberry from Richwood volunteered and was elected to serve as chair. John Barickman was
nominated and elected to serve as vice chair.
6. Next Meeting – June 25, 2013 – LaPlaya Hotel, Naples, FL
7. Meeting adjourned at 2:10 PM
Respectfully submitted:
Brett DeVries – Flexco
Judd Roseberry – Richwood
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Attended Accessories Committee Meeting, Tuesday, June 26, 2012
Name
Company
E-mail
Phone
Allen Reicks
Overland Conveyor Co. Inc.
reicks@overlandconveyor.com
641-628-0055
Andrew Hustrulid
Sandvik Mining and Construction
andrew.hustrulid@sandvik.com
49.173.201.6383
Avinash Bhalerao
Bechtel Corp.
abhalera@bechtel.com
713-235-3679
Benjamin Roberts
TAKRAF USA, Inc
benjamin.roberts@takraf.com
303-714-8050
Bob Butterworth
AFM Industries
bbutterworth@afmindustries.com
905-443-0150
Brett DeVries
FLEXCO
bdevries@flexco.com
616-459-3196
Christopher Luck
Sumitomo Machinery Corp. of America
cjluck@suminet.com
757-485-3355 X844
Chuck Leonard (Sharon)
Continental Screw Conveyor
cleonard@continentalscrew.com
816-233-1800
Corrie Godee (Pat)
Stephens-Adamson
corrie.godee@metso.com
613-962-3411
David Keech
ABB Baldor-Dodge
dwkeech@baldor.com
864-382-2726
David Myers
Jim Myers & Sons Inc.
dmyers@myersequipment.com
704.554.8397
Edwin McDonald
Caterpillar-Belt Terminal Grps.
edwin.mcdonald@cat.com
540-994-3705
Ganesh Bhaskarla
FLEXCO Lemont
gbhaskarla@flexco.com
630-996-3070
Gene Renner
Automatic Systems, Inc.
gene.renner@asi.com
816-313-3220
Geoff Normanton (Roz)
Fenner Dunlop
geoff.normanton@fennerdunlop.com
404-297-3081
George Houston
Richwood Industries, Inc.
george@richwood.com
304-525-5436
Gerhard Schmidt
TAKRAF USA, Inc
gerhard.schmidt@takraf.com
303.714.8050
Greg Westphall (Sue)
FLEXCO
gwestphall@flexco.com
630-971-0150
Harold Dibben
Lassing Dibben Consulting Engineers Ltd.
hdibben2@lassingdibben.com
613-392-9287
James Wilson
Kinder Morgan
james_wilson2@kindermorgan.com
281-667-9384
Jarrod Felton (Kari)
Superior Industries
jarrod.felton@superior-ind.com
320-589-3876
Jeremy Watts
TAKRAF USA, Inc
jeremy.watts@takraf.com
303-714-8050
Jim Mickelson
ABB Baldor-Dodge
jemickelson@baldor.com
864-281-2349
John Barickman
Martin Engineering Company
johnb@martin-eng.com
309-594-2384
John Bisotti
Emerson Power Transmission
john.bisotti@emerson.com
606-564-2010
John Ramsden (Janet)
Fenner Dunlop Classic Conveyor
john.ramsden@fennerdunlop.com
724-459-5261
Joseph Roell
Argonics, Inc.
jroell@argonics.com
906-226-9747
Judd Roseberry (Chris)
Richwood Industries, Inc.
jroseberry@richwood.com
304-525-5436
Kimberly MacLaren
CEMA
kim@cemanet.org
239-514-3441
Lee Williams (Vicky)
ASGCO-Complete Conveyor Solutions
lwilliams@asgco.com
610-821-0216
Lucas Morse
Precismeca Limited
lucasm@precismeca.ab.ca
780-955-2733
Paul Ross, II
Douglas Manufacturing Co., Inc.
pross@douglasmanufacturing.com
205-884-1200 x-100
Philip Hannigan
Reuben Ruggiero
(Brenda)
Richard McConnell
CEMA
phil@cemanet.org
239-514-3441
Pioneer Conveyor LLC
rruggiero@pioneerconveyor.com
301-334-8186
FLEXCO
dmcconnell@flexco.com
612-817-5814
Rick Tschantz (Venita)
Imperial Technologies, Inc.
ricktschantz@imperial-technologies.com
330-491-3200
Rob Butterworth
AFM Industries
rbutterworth@afmindustries.com
905-443-0150
Robert Davis
Emerson Industrial Automation
r.davis@emerson.com
219-465-2416
Robin Steven (Irene)
Veyance Technologies, Inc., Goodyear
robin_steven@veyance.com
937-644-8909
Sergey Vaysfligel
Van Gorp Corporation
svaysfligel@vangorp.biz
641-621-4208
Tim Wolf
Precision Pulley & Idler
wolf@ppipella.com
641-628-3115
Todd Hollingsworth
FLSmidth Boise
todd.hollingsworth@flsmidth.com
208-342-2653x123
Todd Huber
McLanahan Corp.
thuber@mclanahan.com
814-695-9807
Todd Swinderman
Martin Engineering Company
todds@martin-eng.com
386-589-4384
Warren Chandler (Mary)
Stephens-Adamson
warren.chandler@metso.com
613-962-1348 x 224
Ed O'Neil
CCI Conveyor Pulleys-Div. of Martin S&G
eoneil@ccipulley.com
704-982-9555
Jim Proske (OJ)
Foster Wheeler USA Corporation
jim_proske@fwhou.fwc.com
713.929.8066
Jonathon Hall
FMC Technologies
jon.hall@fmcti.com
662-869-7407
Joseph Ostertag
Fenner Dunlop
joe.ostertag@fennerdunlop.com
705-645-4431
Mike Gusmus
FMC Technologies
mike.gusmus@fmcti.com
662-869-7478
Ron Arkema
Van Gorp Corporation
rarkema@vangorp.biz
800-526-4677
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Conveyor Equipment Manufacturers Association
MINUTES OF THE CEMA ENGINEERING CONFERENCE
BULK BELT CONVEYOR ACCESSORIES COMMITTEE MEETING
Tuesday, June 26, 2012 – 1:00 PM
1. The meeting was called to order at 1:00 PM by Brett DeVries. Roll call and contact info is at the
end of these minutes.
2. Reviewed and approved minutes from June 28, 2011. The 2012 agenda was presented and
approved.
3. Old Business
a. John Barickman led a review of a July 20, 2010 report on CEMA 575-2000 containing an
alternate rating method using impact energy. Discussion took place concerning the impact
energy method and its effect on the impact force calculation of a flowing stream of
material. The report contained a calculation for converting the flowing force into a
hypothetically equivalent lump which would have impact energy and could be compared to
the impact energy of actual lumps.
It was approved to move forward with a revision to the 575-2000 standard to be based on
an impact energy rating method with a recommendation to only include the equivalent
impact energy calculation for the flowing force of the material when tonnages exceed 3000
tph. John Barickman will work to rewrite the standard in conjunction with the other
standing members of the working committee and include metric unit conversions and
improved graphics. The working committee hopes to have a draft of the revised standard
before the fall CEMA meeting.
The working committee members are:
John Barickman, Martin Eng – Chair
Judd Roseberry, Richwood
Brett DeVries, FLEXCO
Joseph Roell, Argonics
b. Reviewed a draft document “Classification of Applications for Bulk Material Conveyor Belt
Cleaning”. Discussion took place concerning this document and consensus was that this
document should be considered a “guide”. The document was approved by the
Accessories committee and should be forwarded to the OR’s for a vote.
c. Greg Westphall presented a short PowerPoint on carryback test methods. After some
discussion, the Accessories committee requested Greg’s working committee present a
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
document at the 2013 Engineering conference containing recommendations of some
specific test parameters any future carryback test equipment should meet.
The members of the working committee are:
Greg Westphall, FLEXCO – Chair
Judd Roseberry, Richwood
John Barickman, Martin Engineering
Michael Heenan, ASGCO
Rick Archer, Arch Environmental
Joseph Roell, Argonics
Geoff Normanton, Fenner-Dunlop
4. There was no new business.
5. Judd Roseberry from Richwood volunteered and was elected to serve as chair. John Barickman was
nominated and elected to serve as vice chair.
6. Next Meeting – June 25, 2013 – LaPlaya Hotel, Naples, FL
7. Meeting adjourned at 2:10 PM
Respectfully submitted:
Brett DeVries – Flexco
Judd Roseberry – Richwood
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Attended Accessories Committee Meeting, Tuesday, June 26, 2012
Name
Company
E-mail
Phone
Allen Reicks
Overland Conveyor Co. Inc.
reicks@overlandconveyor.com
641-628-0055
Andrew Hustrulid
Sandvik Mining and Construction
andrew.hustrulid@sandvik.com
49.173.201.6383
Avinash Bhalerao
Bechtel Corp.
abhalera@bechtel.com
713-235-3679
Benjamin Roberts
TAKRAF USA, Inc
benjamin.roberts@takraf.com
303-714-8050
Bob Butterworth
AFM Industries
bbutterworth@afmindustries.com
905-443-0150
Brett DeVries
FLEXCO
bdevries@flexco.com
616-459-3196
Christopher Luck
Sumitomo Machinery Corp. of America
cjluck@suminet.com
757-485-3355 X844
Chuck Leonard (Sharon)
Continental Screw Conveyor
cleonard@continentalscrew.com
816-233-1800
Corrie Godee (Pat)
Stephens-Adamson
corrie.godee@metso.com
613-962-3411
David Keech
ABB Baldor-Dodge
dwkeech@baldor.com
864-382-2726
David Myers
Jim Myers & Sons Inc.
dmyers@myersequipment.com
704.554.8397
Edwin McDonald
Caterpillar-Belt Terminal Grps.
edwin.mcdonald@cat.com
540-994-3705
Ganesh Bhaskarla
FLEXCO Lemont
gbhaskarla@flexco.com
630-996-3070
Gene Renner
Automatic Systems, Inc.
gene.renner@asi.com
816-313-3220
Geoff Normanton (Roz)
Fenner Dunlop
geoff.normanton@fennerdunlop.com
404-297-3081
George Houston
Richwood Industries, Inc.
george@richwood.com
304-525-5436
Gerhard Schmidt
TAKRAF USA, Inc
gerhard.schmidt@takraf.com
303.714.8050
Greg Westphall (Sue)
FLEXCO
gwestphall@flexco.com
630-971-0150
Harold Dibben
Lassing Dibben Consulting Engineers Ltd.
hdibben2@lassingdibben.com
613-392-9287
James Wilson
Kinder Morgan
james_wilson2@kindermorgan.com
281-667-9384
Jarrod Felton (Kari)
Superior Industries
jarrod.felton@superior-ind.com
320-589-3876
Jeremy Watts
TAKRAF USA, Inc
jeremy.watts@takraf.com
303-714-8050
Jim Mickelson
ABB Baldor-Dodge
jemickelson@baldor.com
864-281-2349
John Barickman
Martin Engineering Company
johnb@martin-eng.com
309-594-2384
John Bisotti
Emerson Power Transmission
john.bisotti@emerson.com
606-564-2010
John Ramsden (Janet)
Fenner Dunlop Classic Conveyor
john.ramsden@fennerdunlop.com
724-459-5261
Joseph Roell
Argonics, Inc.
jroell@argonics.com
906-226-9747
Judd Roseberry (Chris)
Richwood Industries, Inc.
jroseberry@richwood.com
304-525-5436
Kimberly MacLaren
CEMA
kim@cemanet.org
239-514-3441
Lee Williams (Vicky)
ASGCO-Complete Conveyor Solutions
lwilliams@asgco.com
610-821-0216
Lucas Morse
Precismeca Limited
lucasm@precismeca.ab.ca
780-955-2733
Paul Ross, II
Douglas Manufacturing Co., Inc.
pross@douglasmanufacturing.com
205-884-1200 x-100
Philip Hannigan
Reuben Ruggiero
(Brenda)
Richard McConnell
CEMA
phil@cemanet.org
239-514-3441
Pioneer Conveyor LLC
rruggiero@pioneerconveyor.com
301-334-8186
FLEXCO
dmcconnell@flexco.com
612-817-5814
Rick Tschantz (Venita)
Imperial Technologies, Inc.
ricktschantz@imperial-technologies.com
330-491-3200
Rob Butterworth
AFM Industries
rbutterworth@afmindustries.com
905-443-0150
Robert Davis
Emerson Industrial Automation
r.davis@emerson.com
219-465-2416
Robin Steven (Irene)
Veyance Technologies, Inc., Goodyear
robin_steven@veyance.com
937-644-8909
Sergey Vaysfligel
Van Gorp Corporation
svaysfligel@vangorp.biz
641-621-4208
Tim Wolf
Precision Pulley & Idler
wolf@ppipella.com
641-628-3115
Todd Hollingsworth
FLSmidth Boise
todd.hollingsworth@flsmidth.com
208-342-2653x123
Todd Huber
McLanahan Corp.
thuber@mclanahan.com
814-695-9807
Todd Swinderman
Martin Engineering Company
todds@martin-eng.com
386-589-4384
Warren Chandler (Mary)
Stephens-Adamson
warren.chandler@metso.com
613-962-1348 x 224
Ed O'Neil
CCI Conveyor Pulleys-Div. of Martin S&G
eoneil@ccipulley.com
704-982-9555
Jim Proske (OJ)
Foster Wheeler USA Corporation
jim_proske@fwhou.fwc.com
713.929.8066
Jonathon Hall
FMC Technologies
jon.hall@fmcti.com
662-869-7407
Joseph Ostertag
Fenner Dunlop
joe.ostertag@fennerdunlop.com
705-645-4431
Mike Gusmus
FMC Technologies
mike.gusmus@fmcti.com
662-869-7478
Ron Arkema
Van Gorp Corporation
rarkema@vangorp.biz
800-526-4677
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Conveyor Equipment Manufacturers Association
MINUTES OF THE 85th CEMA ENGINEERING CONFERENCE
Conveyor Chain Committee Meeting
LaPlaya Beach Hotel, Naples, Florida
June 26, 2012
Bob Reinfried called the meeting to order at 1:00 p.m. A roll call was taken. The following were present:
Bob Reinfried
Bill Hornsby
Brian Cline
Carl Baker
Kurt Robinson
Jeff Gerhart
CEMA
Habasit America
Webster Industries
Prab, Inc.
Webster Industries
Martin Sprocket
Frank Loeffler
Darrell Knigge
Buzz Grant
Paul Michaels
Raul Morales
Loeffler Engineering
Portec, Inc.
Thomas
Rexnord
Rexnord
Bob Reinfried reported that Dan Nasato, Conveyor Chain Section Chair, cancelled at the last minute and
would not be attending.
Bob Reinfried summarized the discussions that took place at the March Meeting:
•
Chain Fact Sheets - slow progress - we need to push this effort and create a revision for the website
- Webster, SpanTech and others will send engineers to the Engineering meetings to lead this effort.
Dan Nasato will follow up with volunteers in May.
•
Brief walk through of the Chain Statistics Sheets - All agree with reporting.
•
We should and will make an effort to track "plastic chain" separate of other chain types. 5 companies
could report on plastic chain - (Habasit, Hitachi, Uni, Rexnord, SpanTech) All agree with this effort Dan Nasato will work with Bob Reinfried on this.
•
Discussed the Interchange Guide Sheet - This will be a goal established during the Engineering
meeting in June = Dan Nasato will work with Engineering meeting volunteers to get this started.
It was decided the best course of action would be to have each attendee submit a list of what items they
would like to see the Conveyor Chain Committee work on. Developing a Drag Chain standard was
mentioned in addition to Chain Fact Sheets and the Interchange Guide Sheet. Comments are to be sent to
CEMA by July 31.
In September, the Conveyor Chain Section will review the list and advise which items are to be worked on.
ADJOURNMENT
• With no other business before the committee, a motion to adjourn was made, seconded, and
unanimously approved.
Respectfully Submitted,
Bob Reinfried
CEMA Executive Vice President
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Conveyor Equipment Manufacturers Association
MINUTES OF THE CEMA ENGINEERING CONFERENCE
IDLER COMMITTEE MEETING
TUESDAY, JUNE 26, 2012
1. Idler Meeting called to order 8:30am by Jarrod Felton
2. 44 attendees – See Roll Call at the end of these Minutes.
3. 2011 minutes approved
4. Reviewed and approved(w/revision) Idler Seal Drag and Kit changes for Belt Book
a. Overview of proposal by Tim Wolf
i. Enhanced single roll awareness. (equations, graph, new text)
ii. Enhanced adjustment factor (R) awareness (graph, new text)
iii. New Kt curves and equations based on 3rd party test results.
b. Changes to implement as approved
i. ΔT variables are reserved for flight forces and per roll will get new variable.
ii. Adjustment factors (R) need defined with other variables.
iii. Soften tone of use of actual values in paragraph following table 6.19B.
c. Motion to approve with revisions and pass to OR’s
5. Belt Book 7th Edition revisions
a. Kit will be submitted as soon as updated
b. Will coordinate with Chapter 6 unit convention review by Overland Conv.
6. Reviewed Idler roundness and balance proposal for 502.
a. Overview of proposal by Tom Hubbert
i. TIR testing
1. 3 roll positions
2. Setup description
3. limits presented
a. Scale quality <0.38mm mfg concern discussed
b. Limit chart similar to SABS presented
4. Mfg constraints discussed
a. Tubing straightness
b. Machining’s impact on balance from wall thickness variability.
5. Tying improving TIR to speed discussed (500, 650rpm?)
6. Should a limit apply to sample or the population
a. Lead to Statitistics discussions
7. Subcommittee needs more work on 5&6.
ii. Dynamic Balance test introduced
7. Discussion of new Initiative
a. Ideas
i.
ii.
iii.
iv.
v.
vi.
vii.
viii.
ix.
Underground Idlers
Metric Idlers
Roller Ends standards
Roll Gap
Kit Test method
Less conservancy in seal drag
Wider Bw, up to 120in.
High speed conveying and heavy idlers (F and beyond)
Standardized roll dimensions
b. Decided work on metric, high speed and heavy idlers would be a significant new effort aligned
with needs of growing international markets.
c. Jarrod Felton volunteered to lead a subcommittee to formulate a plan to discuss at Sept OR
meeting. (Tim W, Todd S, Corrie G, Paul R, Lucas M and Andrew H expressed interest)
8. New officers
a. Tim Wolf – PPI moved from Vice Chair to Chair
b. Ganesh Bhaskarla – Flexco voted Vice Chair
9. Meeting adjourned 10am
Respectfully Submitted
Jarrod Felton
Chair
Atch: Roll Call of Attendees at Idler Committee Meeting
Name
Adam Tiety en
Attended Pulleys Committee Meeting, Tuesday, June 26, 2012 (44 People)
Company
E-mail
Phone
Rexnord
adam.tiety en@rex nord.com
414-937-4192
Allen Reicks
Andrew Hustrulid
Ov erland Conv ey or Co. Inc.
Sandvik Mining and Construction
reicks@ov erlandconv ey or.com
andrew.hustrulid@sandv ik.com
641-628-0055
49.173.201.6383
Av inash Bhalerao
Brett DeVries
Bechtel Corp.
FLEXCO
abhalera@bechtel.com
bdev ries@flexco.com
713-235-3679
616-459-3196
Bob Butterworth
Corrie Godee
AFM Industries
Stephens-Adamson
rbutterworth@afmindustries.com
corrie.godee@metso.com
905-443-0150
613-962-3411
Dav id Keech
ABB Baldor-Dodge
dwkeech@baldor.com
864-382-2726
Ed O'Neil
Edwin McDonald
CCI Conv ey or Pulley s-Div . of Martin S&G
Caterpillar-Belt Terminal Grps.
eoneil@ccipulley.com
edwin.mcdonald@cat.com
704-982-9555
540-994-3705
Ganesh Bhaskarla FLEXCO Lemont
Geoff Normanton
Fenner Dunlop
gbhaskarla@flex co.com
geoff.normanton@fennerdunlop.com
630-996-3070
404-297-3081
George Houston
Gerhard Schmidt
Richwood Industries, Inc.
TAKRAF USA, Inc
george@richwood.com
gerhard.schmidt@takraf.com
304-525-5436
303.714.8050
Greg Westphall
Harold Dibben
FLEXCO
Lassing Dibben Consulting Engineers Ltd.
gwestphall@flex co.com
hdibben2@lassingdibben.com
630-971-0150
613-392-9287
James Wilson
Jarrod Felton
Kinder Morgan
Superior Industries
james_wilson2@kindermorgan.com
jarrod.felton@superior-ind.com
281-667-9384
320-589-3876
Jeff Mensch
Jeremy Watts
Kinder Morgan Engineering & Conv ey ing
TAKRAF USA, Inc
jeffrey _mensch@kindermorgan.com 713-466-0426
jeremy .watts@takraf.com
303-714-8050
Jim Mickelson
ABB Baldor-Dodge
jemickelson@baldor.com
864-281-2349
John Barickman
John Ramsden
Martin Engineering Company
Fenner Dunlop Classic Conv ey or
johnb@martin-eng.com
john.ramsden@fennerdunlop.com
309-594-2384
724-459-5261
Joseph Ostertag
Joseph Roell
Fenner Dunlop
Argonics, Inc.
joe.ostertag@fennerdunlop.com
jroell@argonics.com
705-645-4431
906-226-9747
Judd Roseberry
Richwood Industries, Inc.
Keith Hospodarsky PEER Bearing Company
jroseberry @richwood.com
khospodarsky @peerbearing.com
304-525-5436
847-578-1000
Lee Williams
Lucas Morse
ASGCO-Complete Conv eyor Solutions
Precismeca Limited
lwilliams@asgco.com
lucasm@precismeca.ab.ca
610-821-0216
780-955-2733
Mike Gusmus
Paul Michaels
FMC Technologies
Rexnord
mike.gusmus@fmcti.com
paul.michaels@rexnord.com
662-869-7478
414-643-2067
Paul Ross, II
Douglas Manufacturing Co., Inc.
pross@douglasmanufacturing.com
205-884-1200 x -100
Reuben Ruggiero
Rob Butterworth
Pioneer Conv ey or LLC
AFM Industries
rruggiero@pioneerconv eyor.com
rbutterworth@afmindustries.com
301-334-8186
905-443-0150
Robin Stev en
Ron Arkema
Veyance Technologies, Inc., Goody ear
Van Gorp Corporation
robin_stev en@v ey ance.com
rarkema@v angorp.biz
937-644-8909
800-526-4677
Sergey Vaysfligel
Stev e Heston
Van Gorp Corporation
Fenner Dunlop (Fenner Driv es)
sv ay sfligel@vangorp.biz
stephenheston@fennerdriv es.com
641-621-4208
717-664-8250
Tim Wolf
Precision Pulley & Idler
Todd Hollingsworth FLSmidth Boise
wolf@ppipella.com
todd.hollingsworth@flsmidth.com
641-628-3115
208-342-2653x 123
Todd Swinderman
Tom Hubbert
Martin Engineering Company
FMC Technologies
todds@martin-eng.com
tom.hubbert@fmcti.com
386-589-4384
662-869-7567
Warren Chandler
William Tarr
Stephens-Adamson
ABB Baldor-Dodge
warren.chandler@metso.com
wmtarr@baldor.com
613-962-1348 x 224
864-281-2150
Conveyor Equipment Manufacturers Association
MINUTES OF THE CEMA ENGINEERING CONFERENCE
CONVEYOR PULLEY COMMITTEE MEETING
Tuesday, June 26, 2012
1.
2.
3.
4.
The meeting was called to order at 10:30AM.
Roll Call – Forty-one (41) attendees from twenty-eight (28) companies were present.
Previous minutes were approved.
Old Business:
a. The update to 501 “Welded Steel Wing Pulleys” was tabled until next year’s meeting
(waiting on completion of update to Chapter 8 of the Belt Book).
i. Discussion took place about clarifying maximum wing pulley speeds. 450FPM
without accessories and 300FPM with accessories. Accessory Group will add a
statement to the Accessories chapter that the components are limiting factors in
wing pulley belt speed (wing pulleys may negatively impact accessories at higher
belt speeds).
b. Engineered pulley “Best Practices” was tabled as there was no active interest from the
group.
c. Chapter 8 Draft for the Belt Book was reviewed and discussed:
i. Stress Concentration for keyless locking elements was discussed.
1. Several manufacturers are working on developing values. There may be
some useful information in the German or Australian standards.
2. The issue was tabled due to lack of data to support a value.
ii. Reviewed first draft and asked for comments/suggestions.
iii. The draft bearing section was reviewed and it was agreed to move forward with
this section and include more information on additional types of bearings.
iv. A subcommittee was formed to complete the review of Chapter 8. . The
committee members are Andrew Hustrulid, David Keech, Ed O'Neil, Edwin
McDonald, Jarrod Felton, Jim Mickelson, Paul Ross, Ron Arkema, Steve Heston, Tim
Wolf, and Todd Hollingsworth. Have all comments and/or edits in to SubCommittee Chairman David Keech no later than July 31, 2012.
d. Lagging for high tension belts was discussed:
i. Mentions of lagging types and options are to be included in Chapter 6, 8, 11 & 16 of
the belt book.
ii. A consensus on detailed recommendations of lagging options for high tension
applications could not be reached as this is an evolving technology with ongoing
development so only general references will be made in the appropriate chapters.
iii. Al Reicks agreed to create a paragraph for Chapter 16 (Emerging Technologies).
5. Paul Ross was elected Chair and William Tarr was elected Vice Chair.
6. The next meeting will be June 25, 2013 Naples Florida.
7. The meeting was adjourned at 11:30AM.
Respectfully Submitted,
David Keech
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Attended Pulleys Committee Meeting, Tuesday, June 26, 2012 (41 People)
Nam e
Com pany
E-m ail
Phone
Adam Tiety en
Rex nord
adam.tiety en@rex nord.com
414-937-4192
Allen Reicks
Ov erland Conv ey or Co. Inc.
reicks@ov erlandconv ey or.com
641-628-0055
Andrew Hustrulid
Sandv ik Mining and Construction
andrew .hustrulid@sandv ik.com
49.173.201.6383
Av inash Bhalerao
Bechtel Corp.
abhalera@bechtel.com
713-235-3679
Benjamin Roberts
TAKRAF USA, Inc
benjamin.roberts@takraf.com
303-714-8050
Bob Butterw orth
AFM Industries
bbutterw orth@afmindustries.com
905-443-0150
Brett DeVries
FLEXCO
bdev ries@flex co.com
616-459-3196
Dav id Keech
ABB Baldor-Dodge
dw keech@baldor.com
864-382-2726
Ed O'Neil
CCI Conv ey or Pulley s-Div . of Martin S&G
eoneil@ccipulley .com
704-982-9555
Edw in McDonald
Caterpillar-Belt Terminal Grps.
edw in.mcdonald@cat.com
540-994-3705
Ganesh Bhaskarla
FLEXCO Lemont
gbhaskarla@flex co.com
630-996-3070
Gary Brew er
Rex nord
gary .w .brew er@rex nord.com
770-331-4161
Geoff Normanton
Fenner Dunlop
geoff.normanton@fennerdunlop.com
404-297-3081
Gerhard Schmidt
TAKRAF USA, Inc
gerhard.schmidt@takraf.com
303.714.8050
Greg Westphall
FLEXCO
gw estphall@flex co.com
630-971-0150
Harold Dibben
Lassing Dibben Consulting Engineers Ltd.
hdibben2@lassingdibben.com
613-392-9287
Jarrod Felton
Superior Industries
jarrod.felton@superior-ind.com
320-589-3876
Jeremy Watts
TAKRAF USA, Inc
jeremy .w atts@takraf.com
303-714-8050
Jim Mickelson
ABB Baldor-Dodge
jemickelson@baldor.com
864-281-2349
John Barickman
Martin Engineering Company
johnb@martin-eng.com
309-594-2384
John Ramsden
Fenner Dunlop Classic Conv ey or
john.ramsden@fennerdunlop.com
724-459-5261
Joseph Ostertag
Fenner Dunlop
joe.ostertag@fennerdunlop.com
705-645-4431
Joseph Roell
Argonics, Inc.
jroell@argonics.com
906-226-9747
Judd Roseberry
Richw ood Industries, Inc.
jroseberry @richw ood.com
304-525-5436
Keith Hospodarsky
PEER Bearing Company
khospodarsky @peerbearing.com
847-578-1000
Lee Williams
ASGCO-Complete Conv ey or Solutions
lw illiams@asgco.com
610-821-0216
Lucas Morse
Precismeca Limited
lucasm@precismeca.ab.ca
780-955-2733
Mike Gusmus
FMC Technologies
mike.gusmus@fmcti.com
662-869-7478
Paul Ross, II
Douglas Manufacturing Co., Inc.
pross@douglasmanufacturing.com
205-884-1200 x -100
Philip Hannigan
CEMA
phil@cemanet.org
239-514-3441
Reuben Ruggiero
Pioneer Conv ey or LLC
rruggiero@pioneerconv ey or.com
301-334-8186
Robin Stev en
Vey ance Technologies, Inc., Goody ear
robin_stev en@v ey ance.com
937-644-8909
Ron Arkema
Van Gorp Corporation
rarkema@v angorp.biz
800-526-4677
Sergey Vay sfligel
Van Gorp Corporation
sv ay sfligel@v angorp.biz
641-621-4208
Stev e Heston
Fenner Dunlop (Fenner Driv es)
stephenheston@fennerdriv es.com
717-664-8250
Tim Wolf
Precision Pulley & Idler
w olf@ppipella.com
641-628-3115
Todd Hollingsw orth
FLSmidth Boise
todd.hollingsw orth@flsmidth.com
208-342-2653x 123
Todd Sw inderman
Martin Engineering Company
todds@martin-eng.com
386-589-4384
Tom Hubbert
FMC Technologies
tom.hubbert@fmcti.com
662-869-7567
Warren Chandler
Stephens-Adamson
w arren.chandler@metso.com
613-962-1348 x 224
William Tarr
ABB Baldor-Dodge
w mtarr@baldor.com
864-281-2150
THE VOICE OF THE NORTH AMERICAN CONVEYOR INDUSTRY
Conveyor Equipment Manufacturers Association
6724 Lone Oak Blvd. • Naples, Florida 34109
Tel: (239) - 514-3441 • Fax: (239) - 514-3470
Web Site: http://www.cemanet.org
E-Mail: cema@cemanet.org
MINUTES OF THE CEMA ENGINEERING CONFERENCE
SCREW CONVEYOR COMMITTEE MEETING
TUESDAY, JUNE 26, 2012
CALL TO ORDER
Chairman Bill Mecke called the meeting to order at 8:45 AM. Seventeen people were in attendance
representing 14 member companies. See Attendance List at the end of these minutes.
MINUTES APPROVED
Minutes from June 28, 2011 meeting were reviewed and approved.
OLD BUSINESS
CEMA Installation, Operation, and Maintenance Manual –
• Change the “CEMA” logo from the “member” logo to the standard CEMA logo throughout the
document.
• Change the CEMA address on the bottom of Page 7 and the web site address in the body of
paragraph 1 on Page 7 or delete it.
• Add the branding on the safety labels.
• On Page 7, the vertical labels must all be the same size. Additionally, the upper two vertical labels
have the label numbers cut off.
• Verify on CEMA document SC 2004-01 that in paragraph 1, is “Williams-Steiger Occupational
Safety and Health Act” the proper way to refer to this document?
• Page 10 of 19, change some of the type setting.
• To Chart “A” – Bolt Torque Guide – add a column for T-304-SS and T-316-SS hardware. Dave
Meyers to provide information.
30”dia. and 36”dia. conveyors –
Reviewed capacity per RPM for 30” and 36”. Reviewed proposed maximum screw speed and diameter
factor. Compared maximum screw speed and diameter factor with numbers generated by KWS. Approved
a common value for both. Looked at lump size chart and recommend materials thickness charts submitted
by KWS. Have Phil disseminate to committee members. Committee members to comment and return.
Target date is the end of August.
• Discuss dimensional standards next year.
Hanger Bearing Dimensional Information –
Based on the dimensional information supplied by member companies. Phil to send recommended chart
to member companies for final check. Return by the end of July.
Physical Properties of Materials –
Mark Wilkerson passed project over to KWS. Kris presented a document with a brief explanation of where
the information came from. Phil to disseminate document to all committee members.
NEW BUSINESS
CEMA Safety Video –
Have all member companies review current video and submit specifics for the project. Some comments
from last year included the following:
• Can pictures be edited at a minimal cost.
• Have any of the safety labels and/or placements been changed?
• Include a comment on “stored energy” when mentioning “killing the power source”.
CEMA 300 and 350 review –
Agreed to break down the 350 into sections and assign to various committee members. Continental will
take Chapter 1 & 2, Screw Corp will take Chapter 3, KWS will take Chapter 4 & 5, Martin will take Chapter 6
& 7, Thomas will take Chapter 8.
Todd from McLanahan brought up two points. The first point was the dimensional difference between
CEMA members on hanger side frames. The complete hanger is interchangeable, but the side frames are
not. The second point was similar and had to do with Q.D. caps. Every member company is using a
different dimensional standard. Mention both to the O.R.’s.
After the shafted screw conveyor manual is completed, immediately work on a shaftless manual.
ADJOURN
Meeting was adjourned at 10:42 AM.
List of Attendees
Bill Mecke
Trevin Berger
Kris Gililland
Raul Morales
Jeff Gerhart
Buzz Grant
David Myers
Todd Huber
Warren Knapp
Chris Tarver
Kimberly MacLaren
Mark Jones
Carl Baker
Jon Hall
Gene Renner
John Bisotti
Chuck Leonard
KWS Manufacturing
Martin Sprocket & G
KWS Manufacturing
Rexnord
Martin Sprocket & Gear
Thomas Conveyor
Jim Myers & Sons
McLanahan Corp.
Screw Conveyor Corp.
Maxi-Lift, Inc.
CEMA
Nord Gear
Prab, Inc.
FMC Technologies
Automatic Systems, Inc.
Emerson Ind. Automation
Continental Screw Conv.
bmecke@kwsmfg.com
tberger@martinsprocket.com
kgililland@kwsmfg.com
raul.morales@rexnord.com
jgerhart@martinsprocket.com
bgrant@thomasconveyor.com
dmyers@myersequipment.com
thuber@mclanahan.com
wknapp@screwconveyor.com
ctarver@maxilift.com
kim@cemanet.org
mark.jones@nord.com
carl.baker@prab.com
jon.hall@fmcti.com
gene.renner@asi.com
john.bisotti@emerson.com
cleonard@continentalscrew.com