Mine Cable Services Corporation
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
STRAIN RELIEF CLAMPS
Mine Cable Services Corporation
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
STRAIN RELIEF CLAMPS
MCS strain relief clamps are available for cables with diameters ranging from 0.625”
through 3.500”. These clamps are being used extensively in the mining industry.
Some of the major advantages are shown below:
1.
2.
3.
4.
Can be installed on cables already in services, i.e. split construction.
The rubber inserts cushion the cable while providing a secure grip.
No steel strands in contact with the cable to penetrate the cable jacket.
Replaces Kellam grips, rope and strain relief methods on shovels, draglines, drills,
pole drops and underground equipment.
Complete Listing of Strain Relief Clamps Offered
1.
2.
3.
4.
5.
6.
7.
8.
Type PLW-X
Type PRW-X
Type VLW-X
Type WCSS-X
Type PHW-X
Type F14W-X
Type RC14W-X
Type CDR-36
Unidirectional Strain Relief Clamp (“Arrowhead”)
Bi-directional Strain Relief Clamp (“Football”)
Vertical Strain Relief Clamp
Wrap Around Cable Support Sleeve
“Torpedo” Strain Relief Clamp
“Stinger” Strain Relief Clamp
Road Crossing Support Strain Relief
Cable D-Rings
Mine Cable Services Corporation
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
STRAIN RELIEF CLAMPS
Mine Cable Services manufactures a complete line of strain relief clamps for the
mining industry. A list of the individual types is shown below. We also manufacture
special clamps to either our own, or customer specifications.
POLYURETHANE
Type PLW-X
Manufactured from polyurethane, these “Arrowhead” clamps are designed for
use at substations, cable couplers, pole drops, and anywhere a flexible
attachment is required.
Type PRW-X
The “Football” clamp is similar to the PLW-X clamp, but with a recessed strain
collar and a nylon or polypropylene sling. This permits the clamp to be used in
areas where other clamps may do damage to the cable itself, for example in a
cable reel application.
Type VLW-X
Polyurethane wedge inserts combine with a steel housing to provide positive
clamping of the cable when a constant tension is applied. These clamps are
used at pole drops, mine shafts, and other vertical applications.
Type PHW-X
The “TORPEDO” is generally used in conjunction with the “SATELLITE” or
similar device near an excavation shovel. The clamp is applied to the cable
itself connected to the “SATELLITE” (or similar device). When the shovel
bucket lifts the “SATELLITE”, the cable is protected against severe bending by
the “TORPEDO”. Please refer to section 9 of our main catalogue for more
information.
Type F14W-X
The “STINGER CLAMP” is designed specifically for relieving the tension on the
tail cable at the rear of the shovel. The clamp is welded to the stinger of the
shovel. The rubber liners may be changed to accommodate cable of different
sizes.
Type RC14W-X
The Road Crossing Support series of clamps are designed to support the cable
in a gentle curve, (no less than that recommended by the cable manufacture)
when hoisted to cross a main haul road. End clamps ensure that the cable will
not slip. Along with the Rope Brake (CSL-001) and pulleys, the RC14W forms
part of our Road Crossing Support System found in section 9 of this catalogue.
Also, due to its reinforced design, the Road Crossing Support may be used for
towing cable behind a light duty truck for quick repositioning, similar to the
cable D-Ring below.
ALLOY STEEL
Type CDR-36
The Mine Cable Services Cable D-Ring is a heavy duty aluminum
constructed device that is designed to hold trailing cable securely in
position while being relocated. The CDR is able to accommodate cable
up to 3.500”. The cable is held in position with a heavy duty, adjustable
pressure clamp.
OTHER MATERIALS
Type WCSS-X
The Wrap Around Cable Support Sleeve is fabricated from heat shrink
material and is applied as a permanent strain relief clamp. It may be
used at switch houses, coupler or shovel locations, or at pole drops.
Once applied the clamp cannot be re-used.
Mine Cable Services Corporation. 7731–16th Street Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Toll Free: (800) 663-2889(US & Canada) Fax: (780) 439-4443
www.minecableservices.ca
Mine Cable Services Corporation
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
“ARROWHEAD” STRAIN RELIEF CLAMP
Catalogue No. PLW-X
PLW-X Strain Relief Clamp with Steel Aircraft Cable, clamps and sized to
specific outside diameter of your cable.
This type of clamp is excellent for suspending a length of trailing cable or
anchoring a length of trailing cable connected to a junction box,
substation or other horizontal applications. The clamp is designed to grip
the cable over an adequate length, while at the same time offering the
cushioning effect of rubber. This clamp eliminates the use of straps,
ropes, and other methods which contribute significantly to the failure of
various types of cable.
CATALOGUE NO. PLW-X
The PLW-X series of “Arrowhead” Strain Relief Clamps are manufactured from tough & weather resistant
polyurethane, stainless steel clamps and a central steel tension saddle. The clamp is designed for use on
draglines, shovels, drills, substations and pole drops where some flexibility of movement is needed.
1
Cat. No.
PLW-A
PLW-B
PLW-C
PLW-D
PLW-E
PLW-F
PLW-G
PLW-GH
PLW-H
PLW-J
PLW-K
PLW-L
PLW-M
2
Cable Range
0.625”-0.875”
0.875”-1.125”
1.125”-1.375”
1.375”-1.625”
1.625”-1.875”
1.875”-2.125”
2.125”-2.375”
2.250”-2.500”
2.375”-2.625”
2.625”-2.875”
2.875”-3.125”
3.125”-3.375”
3.375”-3.625”
3
4 5 6
7
8
1. Mining Cable
4. ½” Stainless Steel Hexhead Capscrew 7. 5/16” Dia. Aircraft Cable w/thimble eyes
2. Polyurethane Body 5. ½” Steel Flat Washer
8. Stainless Steel Hose Clamps
3. Steel Tension Saddle 6. ½” Stainless Steel Hexnut
The polyurethane body is composed of two identical halves which allow the relief clamp to be installed
on cable already in operation. Each body is designed to fit a small range of cable diameters. When
installed, the clamp is secured with two stainless steel hose clamps and a central steel tension saddle
which is connected to the mining equipment by 5/16” aircraft cable.
This type of clamp is excellent for suspending a length of trailing cable or anchoring a length of trailing
cable connected to a junction box, substation or other horizontal applications. The clamp is designed to
grip the cable over an adequate length, while at the same time offering the cushioning effect of rubber.
This clamp eliminates the use of straps, ropes, and other methods which contribute significantly to the
failure of various types of cable.
Mine Cable Services Corporation. 7731–16th Street, Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Toll Free: (800) 663-2889(US & Canada) Fax: (780) 439-4443
www.minecableservices.ca
Mine Cable Services Corporation
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
“FOOTBALL” STRAIN RELIEF CLAMP
Catalogue No. PRW-X
PRW-E shown in service in underground tunneling operation
Mine Cable Services offers a number of strain relief clamp options, however the
most popular, by far, is the PRW-X “Football” strain relief clamp. Sized according to
your specific cable diameters, these PRW’s are manufactured from solid
polyurethane and are proven to be rugged and stand up to the wear and tear of a
daily mining operation.
[See sizing chart on following pages. Please contact Mine Cable Services for current catalogue pricing.]
CATALOGUE NO. PRW-X
The PRW-X series of “Football” Strain Relief Clamps are designed for use on draglines, shovels, or cable
reeling devices where a protruding steel saddle and steel cables would not be allowed.
Cat. No.
PRW-A
PRW-B
PRW-C
PRW-D
PRW-E
PRW-F
PRW-G
PRW-GH
PRW-H
PRW-J
PRW-K
PRW-L
PRW-M
1.
2.
3.
Cable Range
0.625”-0.875”
0.875”-1.125”
1.125”-1.375”
1.375”-1.625”
1.625”-1.875”
1.875”-2.125”
2.125”-2.375”
2.250”-2.500”
2.375”-2.625”
2.625”-2.875”
2.875”-3.125”
3.125”-3.375”
3.375”-3.625”
Mining Cable
Polyurethane Body
Steel Tension Saddle
4. ½” Stainless Steel Hexhead Capscrew
5. ½” Steel Flat Washer
6. ½” Stainless Steel Hexnut
7. 1” High Tensile Strapping
8. Stainless Steel Hose Clamps
This model is manufactured using durable, high durometer polyurethane rubber. These clamps come
in two halves for installation over previously installed cable. The two halves are secured with
stainless steel hose clamps, a fully recessed steel saddle, stainless steel eyebolts and high tensile
webbing straps. These straps allow the clamp to be used on cable reels and in other locations where
protruding steel cables and a saddle may cause damage.
This type of clamp is excellent for suspending a length of cable or using it to anchor a length of cable
connected to a junction box, substation, or to just about anything horizontally because the clamp is
designed to grip the cable over an adequate length while at the same time offering the cushioning
effect of rubber.
Mine Cable Services Corporation. 7731–16th Street, Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Toll Free: (800) 663-2889(US & Canada) Fax: (780) 439-4443
www.minecableservices.ca
Mine Cable Services Corporation
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
VERTICAL “V” STRAIN RELIF CLAMP
Catalogue No. VLW-X
The MCS series of Vertical “V” clamps consist
of a welded steel housing and two
polyurethane wedges. This clamp is
designed for use in vertical mine shafts and
other applications where the cable itself
applies a constant directional tension.
Catalogue No.
V9W-A
V9W-B
V9W-C
V9W-D
V9W-E
V9W-F
V12W-G
V12W-GH
V12W-H
V12W-J
V12W-K
V12W-L
V12W-M
Cable Range:
0.625”-0.875”
0.875”-1.125”
1.125”-1.375”
1.375”-1.625”
1.625”-1.875”
1.875”-2.125”
2.125”-2.375”
2.250”-2.500”
2.375”-2.625”
2.625-2.875”
2.875”-3.125”
3.125”-3.375”
3.375-3.625”
1. Steel Base Assembly
2. Polyurethane Wedges
3. Cable
The welded steel housing has two main components; the body and a cross latch which ensures that the
cable tension does not cause the steel body to deform. The body is installed on mine shaft timbers and
the cable trained into the cavity. Once all cable clamps and the cable are in place, the polyurethane
wedges are inserted around the cable from the top opening and driven into place. The main cable clamp
restraint is loosened and the cable is allowed to settle into the distributed cable “V” shaped cable clamps.
The clamp eliminates all other forms of vertical support. Each body and wedge assembly is designed for
a small range of cable diameters. This ensures the user that a particular cable is supported within a close
tolerance. Other uses are vertical pole drops in mine and utility applications, the support of vertical pipe
runs or horizontal cable runs where cable tension is reasonably constant.
Mine Cable Services Corporation.
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
WRAP-AROUND CABLE SUPPORT SLEEVE
Catalogue No. WCSS-X
CATALOGUE NO.
WCSS-170/35
TABLE OF DIMENSIONS
A
B
CABLE RANGE
SLEEVE
(IN/MM)
WIDTH
1.30” to 0.375”
7.1”
34mm to 10mm
180.3mm
C
SLEEVE LENGTH
12”
300mm
WCSS-280/60
2.08” to 0.50”
53mm to 13mm
11.0”
279.4mm
12”
300mm
WCSS-360/100
3.30” to 0.75”
84mm to 20mm
13.75”
349.2mm
15”
400mm
WCSS-470/110
4.25” to 1.14”
107mm to 29mm
17.12”
434.8mm
15”
400mm
Mine Cable Services Corporation
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
“TORPEDO” STRAIN RELIEF CLAMP
*For use with “Satellite” Wire Balls
Catalogue No. PHW-X
The “Torpedo” Strain Relief Clamp is designed for use with the MCS “Satellite” Wire Ball found in section
10 of this catalogue. The Torpedo Body is held in place using two steel saddles and two steel retaining
clamps and can be connected to an MCS Satellite Wire Ball using a steel cable or rope and a steel shackle
(as shown). When the “Satellite” Wire Ball is lifted by the shovel bucket, the “Torpedo” Strain Relief
Clamp is also lifted, supporting the cable in a gentle bend radius, thus protecting the cable from strain
damage.
Ordering Information:
Catalogue Number:
PHW-A
PHW-B
PHW-C
PHW-D
PHW-E
PHW-F
PHW-G
PHW-GH
PHW-H
PHW-J
PHW-K
PHW-L
PHW-M
Cable Range:
0.625” - 0.875”
0.875” – 1.125”
1.125” – 1.375”
1.375” – 1.625”
1.625 – 1.875”
1.875” – 2.125”
2.125” – 2.375”
2.250” - 2.500”
2.375” – 2.625”
2.625” – 2.875”
2.875” – 3.125”
3.125” – 3.375”
3.375” – 3.625”
Mine Cable Services Corporation.
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
“STINGER” STRAIN RELIEF CLAMPS
Catalogue No. F14W-X
MODEL F14W-XX
The F14W-XX Strain Relief Clamps are manufactured with a steel shell and
replaceable polyurethane liners set. The clamp is designed for use on shovels,
draglines, drills and substations where a fixed (welded or bolted) clamp is required.
Cat. No.
F14W-A
F14W-B
F14W-C
F14W-D
F14W-E
F14W-F
F14W-G
F14W-GH
F14W-H
F14W-J
F14W-K
F14W-L
F14W-M
F14W-N
F14W-P
F14W-R
Cable Range
0.625" - 0.875"
0.875" - 1.125"
1.125" - 1.375"
1.375" - 1.625"
1.625" - 1.875"
1.875" - 2.125"
2.125" - 2.375"
2.250" - 2.500"
2.375" - 2.625"
2.625" - 2.875"
2.875" - 3.125"
3.125" - 3.375"
3.375" - 3.625"
3.625" - 3.825"
3.825" - 4.125"
4.125" - 4.375"
1.
2.
3.
4.
5.
6.
7.
8.
Mining Cable
Steel Shell
Mounting Base
Polyurethane Liner- fit to cable size
Welded Steel Hinge
Oversized Brass Hex Nut (vertical)
Steel Flat Washer
Retainer Nut (horizontal)
The shell components are hinged on one side allowing the clamp to be opened. Polyurethane liners are
fitted into each shell half and are sized for a specific cable range. When closed, the clamp is secured with
stainless steel eyebolts and oversized brass hexnuts allowing considerable closing force to be exerted.
The clamp and polyurethane liners were designed to grip the cable over a significant length, while at the
same time provide cushioning which eliminates any cable damage.
Mine Cable Services Corporation. 7731–16th Street, Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Toll Free: (800) 663-2889(US & Canada) Fax: (780) 439-4443
www.minecableservices.ca
Mine Cable Services Corporation
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
ROAD CROSSING SUPPORT STRAIN RELIEF
(For use with complete road crossing system)
Catalogue No. RC14W-XX
The Road Crossing Support is available in a range of sizes to accommodate different cable diameters from
as small as 0.625” – 3.625”. Manufactured from 80 Durometer Polyurethane, the RC14W-X is designed to
cradle the mining cable as it crosses the haul road. The center support straps ensure that the cable is
supported at the correct position while the end clamping straps are designed to prevent slippage as the
cable is raised into position.
Ordering Information:
Part no.
RC14W-A
RC14W-B
RC14W-C
RC14W-D
RC14W-E
Cable Range:
0.625-0.875”
0.875-1.125”
1.125-1.375”
1.375-1.625”
1.625-1.875”
Part no.
RC14W-F
RC14W-G
RC14W-GH
RC14W-H
Cable Range:
1.875-2.125”
2.125-2.375”
2.250-2.500”
2.375-2.625”
Part no.
RC14W-J
RC14W-K
RC14W-L
RC14W-M
Cable Range:
2.625-2.875”
2.875-3.125”
3.125-3.375”
3.375-3.625”
Mine Cable Services Corporation.
7731–16th Street
Edmonton, Alberta, Canada, T6P 1M1
Tel: (780) 439-1113 Fax: (780) 439-4443
Toll free: (800) 663-2889
Email: sales@minecableservices.ca
CABLE D-RING STRAIN RELIEF
Catalogue No. CDR-36
The MCS Cable D-Ring is designed to assist mine operators in moving or relocating trailing
cable short distances by dragging behind a light duty vehicle on your site. The curved cradle
eliminates cable damage, while the adjustable clamp reduces cable slippage. This is an effective
way to move your cable around the worksite while keeping a safe bending radius and offering
adequate strain relief. The MCS Cable D-Ring is light weight in design and is intended for
storage in the back of a minesite vehicle, for quick application when a temporary strain relief
clamp is required.