Two-Bundle 72 in. Bullwheels
12,000 lb. Capacity per Conductor


  • Digital Controls and Self Diagnostics
  • Fully Hydraulic/Direct Drive System
  • Tensions 2 conductors at once.
  • Synchronized tensioning, up to 3 machines.
  • Protected, off-ground operator position.
  • Hydraulically-driven bullwheels.
  • Fully enclosed Safe-Zone Cab® with heating and air.
  • Revolution Series
  • Safe-Zone® Cab



About the T-7212

The Sherman + Reilly Revolution Series T-7212 is a bullwheel tensioner built with two pairs of 72 in. 5-groove bullwheels (4 total) and a max tensioning capacity of 12,000 lbs. per sub-conductor or bullwheel pair. Each bullwheel has its own planetary gearbox and hydraulic motor with spring-applied hydraulic release brake. A precision, microprocessor-controlled motor drive enables inching, even under maximum load.

The T-7212 includes an Automatic Tensioning System which maintains an operator set tension. The automatic bullwheel synchronization system maintains equal sag of all conductors, while recording/displaying tension and distance, and permitting manual override. In addition to tensioning mode, the T-7212 can operate in a pull-drive mode for easy rewinding of unused conductor and in forward drive for ease of bullwheel reeving. The T-7212 is designed to work with the CRS-96/67 and CRS-108/83 reel stands by connecting any two of the four available external hydraulic connections either on the front or rear of the T-7212. When the CRS-96/67 or CRS-108/83 is connected to the T-7212, the operator can control hold back tension from inside the T-7212’s Safe-Zone® Cab.

The T-7212 features a Safe-Zone® Cab providing ultimate safety and comfort for the operator. The Safe-Zone® Cab employs a polycarbonate front window for maximum visibility while providing superior protection against impact. The cab includes climate control, a fully adjustable ergonomic seat, and all required electronic controls and gauges. The Safe-Zone® Cab is designed to reduce operator fatigue, and provide an “off -ground” envelope for greatly reducing the risk of “touch potential” in energized environments.

The T-7212 off ers either a heavy-duty 5th wheel king pin hitch or a pintle eye hitch option for maximum vehicle towing compatibility, has PLC machine controll with CAN-bus technology, uses a removable/replaceable memory card to store all relevant stringing data, self-diagnostic system for all hydraulic circuits, and a PTO for reel stand control.

For More Information about the T-7212 contact your local Sherman + Reilly Representative or call Sherman + Reilly directly at 1-800-251-7780.

Maximum Tensioning Capacity 12,000 lbs. per bullwheel pair
Maximum Line Speed 4 mph.
Bullwheels (4) 72 in. dia. / 5 Groove
Bullwheel Linings 1 1/8 in. groove radius / machine-grooved polyurethane
Tension Brake Hydraulic, motor-driven
Brake Control Automatic, per operator setting
Drive System Direct Drive: hydraulic motor, bullwheel
Drive System Engine Diesel, 80 HP, water-cooled
Fuel Capacity 12 U.S. Gallon
Hydraulic Fluid ISO Grade 32
Hydraulic Reservoir 20 U.S. Gallon
External Hydraulic Connections (4) Quick Disconnect Type, 2 front, 2 rear, (for use with CRS-96/97 and CRS-108/83)
Fail-Safe Brake Spring-applied- released by hydraulic pressure
Fairlead Rollers (4) 2 front, 2 rear, adjustable
Operator’s Safety Enclosure Safe-Zone® Cab, fully enclosed, dual door, climate controlled
Frame Construction Steel, continuous-weld
Towing Attachments 5th Wheel 2 inch King Pin 3 inch Pintle Eye
Length (Overall, Nom.) 34 ft. 6in. 27 ft., 6 in.
Width (Overall, Nom.) 8 ft., 6in. 8 ft., 6 in.
Height (Overall, Nom.) 12 ft., 4 in. 11 ft., 10 in.
Weight (Nom.) 30,920 lbs. 27,660 lbs.
GVWR 55,500 lbs. 28,500 lbs.
Suspension Air ride HD Leaf Spring
Axle Configuration Tandem Tandem
Wheel Configuration and Tires Double, 275/70R 22.5 Double, 235/75R 17.5
Brakes (Trailer) Air Electric
Towing Attachment 5th Wheel, 2 in. king pin 3 in. pintle eye
Tie Downs (2) 1 in. dia. steel D-Rings 1 in. dia. steel D-Rings
Rear (R/L) Jacks (2) Hydraulic, with shoe, anti-slide Hydraulic, with shoe, anti-slide
Front Jacks (2) Hydraulic, vertical cylinder type, with shoe Hydraulic, vertical cylinder type, with shoe
Electric System Split 12/24 VDC Split 12/24 VDC
Battery (2) 12 V, 680 CCA, BCI group 48 12 V, 680 CCA, BCI group 48
Lights / Navigation 12 V, LED, U.S. DOT-approved 12 V, LED, U.S. DOT-approved
Exterior Work Lighting (2) Cab-top, flood Cab-top, flood
Grounding (4) ¾ in. dia. copper-clad steel loops ¾ in. dia. copper-clad steel loops
Wheel Chocks Standard Standard
Fire Extinguisher ABC ABC
Color S+R White S+R White

Please refer to the Product Sheet found on this page under Downloads.