Twin Disc Transmissions

7500 Series Specifications

Features and Benefits

• Lightweight yet durable aluminum housings reduce overall vehicle weight
• Does not require a torque converter, further contributing to overall weight savings
• Compact in size and able to fit between a mobile equipment’s frame rails
• Overall length of 1546 mm (61 in) provides narrow footprint
• Smaller gear ratio steps provide delivery of higher average power
• Less complicated plumbing makes it easier to fit into the cramped quarters of a frac rig
• Offers two live 149 kW PTOs
• Includes a torsional coupling
• Automatic electronic oil level system available
• In most cases, standard engine oil may be used, simplifying servicing requirements
• Designed to match engine life
• Made in America, the TA90-7500 transmission features the same reliability and robust design on which Twin Disc built its reputation

7600 Series Specifications

Features and Benefits

• Designed to match the engine life on pressure pumping rigs for oil and gas well stimulation. The robust, simplicity of the counter shaft design provides for an expected L10 life of 10,000 hours.
• Designed specifically for the pressure pumping market, the transmission does not require throttle dipping for any of the range to range shifts. It is designed to be power shifted under all loaded or unloaded situations.
• Lightweight yet durable aluminum housings to reduce overall vehicle weight.
• Automated line test/hydraulic pressure test for pressure pumping applications.
• Does not require a torque converter, further contributing to overall weight savings.
• Compact in size and able to fit between the frame rails of mobile equipment.
• Small and evenly spaced gear ratio steps ensure that well pressure does not drop during gear shifts.
• Simple plumbing to ease installation in the cramped quarters of a pressure pumping rig.
• In most cases uses the same oil as the engine, simplifying onsite fluids logistics and servicing requirements.
• Includes a highly flexible coupling to reduce the damaging effects of the torsional excitations by the engine and piston pump.
• Internal brake capability to hold the output shaft when not pumping.
• Oil fill port and sight glass are co-located, making oil fills a one person operation.

8500 Series Specifications

Features and Benefits

• Increased performance: efficient gear train combined with electronic controls tailored to the needs of the specific application to optimize machine performance.
• Safety: the control system looks after the transmission so the operator can focus on the operation of the machine. Speeds and interlocks can be programmed to meet the needs of the specific machine.
• Ease of operation: available automatic shifting or manual power shift combined with shift inhibits and interlocks simplify the operator’s job and allows for concentration on the job rather than the powertrain.
• Reduced downtime: Durable heavy-duty components, combined with electronic controls which prevent overspeed, shift shocks and reduce the effects of operator’s error, result in increased machine availability and less wear and tear on other machine components.

Applications

• Oil Field Fracturing Rigs
• Mine Haul trucks
• Anchor Hoists
• Special Purpose Equipment

TD61-1180 ARFF Specifications

Specifications

• Maximum gross input power (ARFF only) 705 hp (526 kW)
• Maximum input speed 2300 RPM
• Weight 1700 lbs. (770 kg)
• Maximum oil temperature at converter outlet 250 F
• Sump capacity 7 USG (26.5 liters)
• Cooling required ~25% of GHP
• Cooling pump capacity ~44 GPM @ 2100 RPM
• Remote mounted
• 30-70, 50-50, 70-30 with differential lock
• TD61-1180 output rotation opposite engine for forward

TD61-1180 AWD Specifications

Applications

• Military vehicles
• Haul trucks
• ADTs
• Heavy-duty off-road vehicles

TD61-2619 AWD Specifications

Typical Applications

• ARFF vehicles
• Military vehicles
• Haul trucks
• ADTs
• Heavy-duty off-road vehicles