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PPC Variable Displacement Hydraulic Motors are adjustable displacement ball piston motors built to the highest standards of accuracy. Designed for applications requiring rugged durability, smooth low speed running, highest efficiency and minimum leakage, they permit precision control of torque and speed It provides a versatile power package of high efficiency. Adjustments of the motor displacement can be made to exactly match torque and speed characteristics as required by specific conditions.

The motor employs 20 ball pistons uniformly distributed and ported, reacting with precision anti friction bearing displacement rings to provide a virtually pulseless, vibration-free output rotation at any speed. Output torque is constant throughout entire speed range, with constant input pressure. Reversibility with identical dynamic characteristics in either direction is provided by precisely identical flow paths within the motor.

Balanced forces within the motor minimize frictional losses permitting slow rotation under servo control, as well as providing a small start-run pressure. The motor may be operated continuously, reversed or stalled while under full load conditions. It may be mounted in any position. The motor can be run with or without case filled. Empty case is recommended for speeds above 2000 rpm. Operating temperature is limited by hydraulic fluid capabilities. 10 micron filtration ahead of the motor is recommended. Filtration to this degree will prolong motor life and efficiency.

Motor mountings: Flange is standard. Consult factory for other mountings.
Manual control of motor displacement is standard; Hydraulic remote control is available.
Unit of Measure

Motor Type

N/A Standard

Mount Type

N/A Flange

Maximum Displacement

N/A 0.93 in³

Torque /100 psi

N/A 14 in·lb

Rated Minimum Speed

N/A 5 rpm

Rated Maximum Speed

N/A 3000 rpm

Rated Pressure

N/A 1000 psi

Nominal Output at Rated Speed and Pressure

N/A 6 hp

Flow Rate /100 rpm

N/A 0.4 gpm

Inertia

N/A 0.94 lb·in²

Rotational Acceleration, 1000 psi

N/A 57250 rad/s²

Maximum Pressure

N/A 20 psi

Maximum Overhung Load

N/A 300 Pound

Hydraulic Oil

N/A Premium Grade 75 to 300 SSU at 100 ºF

Contained Oil Volume - Port to Port

N/A 1.62 in³

Compressed Oil Volume

N/A 0.81 in³

Typical Leakage Rate

N/A 20 in³/min

Number of Ball Pistons

N/A 20

Configuration Options

N/A close coupled shaftless face mounting cross port bleed and relief valves feedback/readout drive shaft flow or directional valve manifolds hydraulic/mechanical displacement shifters manifolds for standard servovalves

Weight

N/A 10.25 Pound
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