Hydraulic Motors
Radial Piston Motors – Low Speed, High Torque
Star-type radial piston motors, 59–23,000 cm³/rev, up to 73 kN·m
Fixed-housing radial piston motors with a rotating output shaft, built in crankshaft/connecting-rod and hydrostatically balanced piston designs. They drive loads directly at 0.5 to 1,000 r/min without a gearbox, with rated pressures of 14–25 MPa and rated torque from 193 N·m to 73,065 N·m. Single- and two-speed versions are available with a choice of output shafts, distributor ports and bolt-on valve blocks.
Typical specifications
- Displacement
- 59 – 23,034 cm³/rev
- Rated torque
- 193 – 73,065 N·m
- Pressure (rated / peak)
- 14 – 25 MPa rated; peak up to 45 MPa on small frames
- Speed range
- 0.5 – 1,000 r/min (max. speed falls as displacement rises)
- Max. power
- up to 375 kW
- Weight
- 21 – 1,800 kg
Ranges across the product family. Exact figures depend on the model.
Options
- Crankshaft/connecting-rod and hydrostatically balanced piston designs
- Single-speed or two-speed (displacement switchable while running)
- Output shafts: external spline (DIN 5480 or straight-sided), parallel key, tapered key, internal spline
- Rear distributor with flange or threaded ports; bolt-on counterbalance, overload and shuttle valve blocks (35 MPa, 60–120 L/min)
- Optional speed sensor / tachometer
- Free-wheeling capability
Applications
- Plastic injection-molding machines
- Ship and deck machinery (winches, capstans, windlasses)
- Construction machinery
- Hoisting and transport equipment
- Heavy metallurgical machinery
- Oil, mining and coal-mine equipment
- Geological drilling rigs
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