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Hydraulic Motors

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LSHT Torqmotors and Nichols Motors - Full Catalog

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Tractive effort

The total linear force that a vehicle can exert on the ground. Sometimes called "rim pull," it is the axle torque divided by the distance from the axle to the surface it is traversing.

Rolling resistance

The force in pounds required to propel a vehicle at constant speed over level terrain. It varies with the weight of the vehicle and the type of surface it is traversing. Soft sand, for example, offers more resistance to movement than concrete.

Grade resistance

The additional force required to move a vehicle up an incline. The grade of a slope is normally expressed as a percentage of rise over run. The gradeability of a vehicle is defined as the maximum grade the vehicle can climb.

Acceleration Force

The force required to accelerate a vehicle from an initial speed to a set speed in a particular number of seconds.

Drawbar Pull

The force a vehicle can exert on a load in addition to the force required to propel itself.

Light Duty Torqmotors™

TC Series

High Performance and long life in a reduced space envelope describe Parker’s TC Series motors. High volume fluid flow continually washes across splines and seals to extend their life. Roller vanes and sealed commutation assure high volumetric efficiency and smooth low speed operation.

TB Series

This light duty motor incorporates all the features of heavy duty motors. Design features include a high pressure shaft seal so external drains are never required, roller vane technology for automatic wear compensation, and full flow internal cooling and flushing. The TB is an economical motor for most light to medium duty applications.

TS Series

This motor utilizes a stainless steel front housing and output shaft, with a glass filled polypropylene rear cover for the ultimate in corrosion protection. It is designed for use underwater or in harsh environments where it will be exposed to water or corrosive chemicals. Features such as roller vanes, high pressure shaft seal and full flow spline lubrication are standard.

TE Series

This light duty motor has higher pressure ratings than the TB motor, for applications requiring higher torque. Robust roller bearings withstand higher side loads and are suitable for chain and sprocket shaft connections. It uses high pressure shaft seals, robust roller bearings and high flow shaft seal cooling.

TJ Series

The TJ Series marries the TE Series drive train with a larger and heavier roller bearing and shaft. It provides all that could be expected of a light duty wheel motor and more. Unique 60:40 spline geometry provides drivetrain strength for severe applications. Roller vanes and sealed orbit commutation assure high volumetric efficiency and smooth slow speed operation. Cooling fluid flow across splines and seals mean long, trouble-free life.

Medium Duty Torqmotors™

TF Series

Sturdy construction throughout makes Parker’s TF Series motors suitable for the most severe applications. The powertrain uses unique 60:40 spline geometry for strength. All splines are constantly flushed with cool fluid for durability. Roller vanes and sealed commutation assure high volumetric efficiency, smooth low speed operation and extended life. Shaft seals can withstand full system pressure and are washed in cool fluid for long life.

TF Clutch Series

The Clutch Motor consists of a TF Series motor separated from the output shaft by a face spline coupling. The coupling is held apart by springs, disconnecting the motor from the output shaft, allowing the output shaft to freewheel. When hydraulic pressure is applied to either motor port, the springs separating the coupling are overcome and the motor is coupled to the output shaft.

DF Brake Series

Parker’s DF Series brake motors consist of a mechanical drum brake mounted integrally to our rugged TF Series LSHT hydraulic motor. The compact size, reliable holding capacity and ease of installation make this motor with parking brake the ideal choice for the propulsion systems on many turf, agricultural and other vehicles. The brake is available with either vertical or horizontally applied levers. The vertical style has fixed brake pads, while the horizontal version has floating brake pads that can be adjusted as required over the life of the brake. Both versions are for static applications only.

TL Series

The heart of the new compact Torqmotor™ is the strongest drive train in its class. Coupled with this extra heavy-duty drive train are the high efficiencies and low speed performance for which the Parker Torqmotor™ is known. As with all Torqmotors™, high speed valving and full flow drivetrain lubrication are standard. Case drains are not required. Roller vanes and a sealed commutator maintain high efficiencies and provide smooth low speed performance.

TG Series

The heart of Parker’s TG Series powertrain, the drive link, is an extra heavy duty part that includes unique 60:40 spline geometry. Rugged construction throughout allows the transmission of up to 13,000 lb-in of torque. The entire powertrain is continually washed in cool, high flow fluid to assure long life. Roller vanes and a sealed commutator maintain high efficiency and provide smooth low speed performance.

BG Brake Series

This brake motor consists of a BG Series motor integrated into a wet disc, spring applied, hydraulically released brake. Standard holding capacity is 12,000 lb-in of holding torque. The brake is front mounted for reliable operation even in the event of a system failure. The brake release port is capable of pressures to 3000 PSI.

DG Brake Series

Parker’s DG Series brake motors consist of a mechanical drum brake mounted integrally to our rugged TG Series LSHT hydraulic motor. The compact size, reliable holding capacity and ease of installation make this motor with parking brake the ideal choice for the propulsion systems on many turf, agricultural and other vehicles. The brake is available with either vertical or horizontally applied levers. The vertical style has fixed brake pads, while the horizontal version has floating brake pads that can be adjusted as required over the life of the brake. Both versions are for static applications only.

TH Series

This motor was designed for tough applications. A stout drive link with unique 60:40 spline geometry will transmit over 13,000 lb-in of torque. The 1-1/2" output shaft can support 7000 pounds of radial load. Efficiency is assured by the use of roller vanes and a sealed commutator. Durability is maintained by continually washing the powertrain splines and shaft seal in cooling fluid.

BH Brake Series

This brake motor consists of a BH Series motor integrated into a wet disc, spring applied, hydraulically released brake. Standard holding capacity is 16,000 lb-in of holding torque. The brake is front mounted for reliable operation even in the event of a system failure. The brake release port is capable of pressures to 3000 PSI.

Heavy Duty Torqmotors™

TGK Series

The TGK motor is a compact motor with the performance of much larger motors. Up to 45 HP in less than 6 inches of length. This high power density allows for higher horsepower applications in a small space, reducing machine weight as well. Its unique drive train design is based on proven Torqmotor™ technology, assuring unmatched durability.

THK Series

This motor was designed for tough applications. A stout drive link with unique 60:40 spline geometry will transmit over 13,000 lb-in of torque. The 1-1/2" output shaft can support 7000 pounds of radial load. Efficiency is assured by the use of roller vanes and a sealed commutator. Durability is maintained by continually washing the powertrain splines and shaft seal in cooling fluid.

TK Series

The heart of Parker’s TK Series powertrain, the Torqmotor™, is an extra heavy duty part that includes unique 60:40 spline geometry. Rugged construction throughout allows the transmission of over 23,000 lb-in of torque. The entire powertrain is continually washed in cool, high flow fluid to assure long life. Roller vanes and a sealed commutator maintain high efficiency and provide smooth low speed performance.

Nichols Motors™

110A Series

This high performance motor contains a power element that is pressure loaded against internal leakage for high volumetric efficiency. It is wear compensated, so that its volumetric efficiency will not degrade with use. It can provide up to 7247 lb-in of torque through a one-piece solid fixed axis shaft. This shaft design allows for full stationary spline contact between shaft and rotor, minimizing spline contact stresses. It also allows the shaft to be extended through the rear cover for mounting parking brakes, auxiliary drive functions or encoders for speed readout or closed loop control. Low internal pressure drop means high mechanical efficiency and higher flow capability.

700/716 Series

Parker’s unique two-speed motor utilizes two separate IGR™ power elements on a common shaft. An integral selector valve shifts between high torque, low speed (parallel) operation and high speed, low torque (series) mode in a ratio of 2:1. The use of two power elements eliminates the deficiencies of traditional, single power element designs. In the high torque mode, the motor delivers twice the torque and half the speed that it does in the high speed mode. The selector valve can be open or closed center and may be actuated by an external pilot or optional solenoid valve. The open center selector valve can be shifted “on the fly” while the motor shaft is rotating under load. The selector valve is spring loaded to return to its pilot-pressure-off position. Normal mode of operation is field changeable and can be selected as series or parallel. Pilot pressure must be 300 psi higher than motor case or outlet pressure and may be as high as typical hydraulic system operating pressure.

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