ROTARY SPIDER
™
PROVIDING ECONOMIC BACK-UP ROTATION
FOR TOP DRIVE-EQUIPPED RIGS
T & T ENGINEERING SERVICES, INC.™
ROTARY SPIDER
™
ECONOMIC BACK-UP ROTATION SYSTEM
T&T Engineering, Inc.’s™ Rotary Spider™ is a safe and easyto-use rotating back-up system for top drive-equipped drilling
rigs. For drilling programs where the customer wants the drilling
contractor to provide a larger rotary table, this back-up system is
designed to deliver the level of slow speed, high-torque rotation
required to ensure drilling conditions are maintained in the event
of a top drive failure.
Designed as an alternative to a back-up rotary table, the Rotary
Spider™ allows the pipe to be rotated while continuing to circulate
the well in the event of a top drive failure. The Rotary Spider™ can
be designed to fit any rig configuration, whether as part of a new
rig build or added as a retrofit to an existing rig. To meet market
requirements, this system can be available in 17-1/2”, 20-1/2”,
27-1/2”, 22”, 37-1/2”, 49-1/2”, and 60-1/2” sizes.
ROTARY SPIDER™
THE SECURITY OF A BACK-UP ROTARY TABLE IN A COMPACT SYSTEM
T&T Engineering’s Rotary Spider™ offers the industry’s largest back-up rotary system in a very compact package. An economical alternative to a full rotary
table, a 37-1/2” rotary spider can actually be dropped into the space of a conventional 27-1/2” rotary table. This system is also built for long-term durability
and features minimal maintenance requirements.
The Rotary Spider™ features integral hydraulic motors, teamed with a choice of controls. An available choice of API split-square drive, pin drive, or tapered
master casing bushing adds to versatility of the unit. The Spider’s sealed design virtually eliminates mud contamination through the cover area or through
centralized maintenance doors.
A direct connection between the hydraulic motors and the rotating system drive
eliminates transmission, coupling, and drive train issues. This direct connection also
provides for a smaller, lighter design and easier installation. All Rotary Spider™
systems are equipped with a sealed, heavy-duty main thrust bearing for long-lasting
durability. This bearing is enclosed in an oil bath, adding to its durability and long life.
In addition, the Rotary Spider design also provides for ready access to the bearing
for quick and easy maintenance. For added security, the Rotary Spider™ features
a dual-locking system that is redundantly engaged directly on the master bushing
support and locked in both directions.
Combining a rugged design, quality construction, ease of use, and an affordable
price, the Rotary Spider™ back-up system incorporates a number of features that
ensure both its utility and its reliability:
• Designed to fit standard 17-1/2”, 20-1/2”, 27-1/2”, 22”, 37-1/2”, 49-1/2”,
and 60-1/2” sizes
• Optional master bushing support provided for API split square drive; pin
drive also available
• Precision-machined gears and heavy duty main thrust bearing for long life
SPECIFICATIONS
Opening Diameter
Vertical load rating, dynamic
37.61–37.63 in
750,000 lbs
Vertical load rating, static
1,300,000 lbs
Drive torque rating
30,000 ft-lbs
Driving RPM
0.5–10 RPM
Lock (holding) torque
65,000 ft-lbs
Hydraulic pressure rating
3,000 psi
• Fully enclosed and sealed hydraulic motors
Hydraulic design operating
pressure
2,500 psi
• Direct connection between the hydraulic motors and rotating system drive,
eliminating transmission, coupling, and drive train issues
Recommended system flow rate
(nomical)
65 GPM
• Sealed unit design virtually eliminates mud contamination
System operating temperature
• Dual locking system for securing the table in both directions
• Sealed oil bath lubrication system for main bearing
Main bearing lubrication
Weight (w/o master busing)
30°–140°F
Mobil SHC synthetic oil (or
equivalent)
7,080 lbs
T&T ENGINEERING SERVICES, INC.
™
T&T is focused on providing innovative solutions that deliver a measurable difference in
productivity, safety and cost efficiency. Our practical design and engineering orientation, along
with our customer focus, makes us the best choice for engineered solutions that benefit your
operation today and tomorrow.
TM
ENGINEERING
SERVICES INC
ENGINEERING
SERVICES INC
APPLIED INNOVATION™
MASTS AND SUBSTRUCTURES • BOP HANDLERS • RIG WALKING SYSTEMS • RIG MOVERS
PIPE HANDLERS • ENGINEERING SERVICES
16131 N. Eldridge Parkway, Ste 200 Tomball, Texas 77377
P: 281.205.0022 • www.TTEngineering.com • sales@TTEngineering.com
© 2014 T&T Engineering Services, Inc.™
TTE1021