Bosch Rexroth | SRMCR5D820L50Z32A0M1L12
SRMCR5D820L50Z32A0M1L12
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The SRMCR5D820L50Z32A0M1L12 motor is produced by Bosch Rexroth for the MCR Radial Piston Motors series. It converts hydraulic energy into rotational motion for mobile and industrial automation tasks. The unit has a displacement of 820 cm³ per revolution, so each turn transfers a defined volume of fluid to generate torque. A 50 mm shaft diameter provides a rigid mechanical interface with gearboxes or pulleys. Hydraulic connections are configured with a 1 1/16-12 UNF thread for the inlet and outlet ports, while the case drain line uses a 3/4-16 UNF thread to return leakage flow to tank. The housing weighs 39 kg, offering mass suitable for heavy-duty mounting. NBR sealing elements hold pressure and resist common hydraulic oils, and the design does not include a through shaft which simplifies layout in single-drive arrangements.
The case drain circuit tolerates up to 10 bar, preventing excessive pressure in the housing during continuous operation. Working ports endure a differential pressure of 400 bar, and peak loads up to 420 bar can be applied at port A or B for short durations. Under these conditions the motor develops a maximum torque of 3000 Nm, corresponding to a specific torque of 13 Nm per bar of pressure. Smooth rotation is maintained down to 0.5 rpm for low-speed positioning, while the rated flow allows speeds up to 220 rpm for high-speed travel. These operating limits define the performance envelope for hydraulic automation systems that require stable torque across a wide speed and pressure range.
Technical Specifications
Case Drain Port Thread
3/4-16 UNF
Displacement
820 cm³/rev
Inlet/outlet Port Thread
1 1/16-12 UNF
Max Case Drain Pressure
10 bar
Max Differential Pressure
400 bar
Max Pressure At Port A/b
420 bar
Max Speed (1l)
220 rpm
Max Torque
3000 Nm
Min Speed (smooth Running)
0.5 rpm
Seal Material
NBR
Shaft Diameter
50 mm
Specific Torque
13 Nm/bar
Through Shaft
None
Weight
39 kg
1620 Old Apex Road
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