Bosch Rexroth | SRMCR10F1340F250Z32B7M2WL42
SRMCR10F1340F250Z32B7M2WL42
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The SRMCR10F1340F250Z32B7M2WL42 radial piston motor is produced by Bosch Rexroth within the MCR Radial Piston Motors series. It serves as a hydraulic prime mover that converts pressurized fluid into rotation for mobile or industrial drives. A displacement of 1340 cm³ per revolution defines the flow demand and establishes the speed-torque relationship of the unit. The specific torque is 21 Nm per bar, so output torque scales linearly with supply pressure for predictable control. Smooth operation is maintained down to 0.5 rpm, which supports low-speed positioning without cogging. The motor tolerates a maximum differential pressure of 400 bar during continuous duty, enabling high power density. Peak circuit events can reach 420 bar at ports A or B without damaging internal components. Under these conditions the drive shaft can deliver up to 4800 Nm of torque to the load.
The hydraulic interface uses 3/4-inch SAE J518 pads at the inlet and outlet ports, allowing standard high-pressure flange connections. A dedicated 9/16-18 UNF SAE J514 fitting on port X supports the two-speed changeover function. Case drainage returns through a 3/4-16 UNF SAE J514 port, and backpressure at this line must remain below 10 bar to protect shaft seals. The spring-applied, hydraulically released brake secures stationary loads with a holding torque of 7000 Nm. Releasing the brake requires a minimum pressure of 11 bar and consumes 36 cm³ of oil each cycle. Port Z for the brake circuit is rated for a maximum of 30 bar, matching common auxiliary supply lines. The assembled unit weighs 67 kg, which should be considered when selecting mounting hardware and support structures.
Technical Specifications
2-speed Port Size (x)
9/16-18 UNF (SAE J514)
Brake Holding Torque
7000 Nm
Brake Port Z Max Pressure
30 bar
Brake Release Pressure (min)
11 bar
Case Drain Port Size (l)
3/4-16 UNF (SAE J514)
Displacement
1340 cm3/rev
Inlet/outlet Port Size (a,b)
3/4 in (SAE J518)
Maximum Case Drain Pressure
10 bar
Maximum Differential Pressure
400 bar
Maximum Pressure At Port A/b
420 bar
Maximum Torque
4800 Nm
Minimum Smooth Running Speed
0.5 rpm
Motor Weight (2wl)
67 kg
Oil Volume To Operate Brake
36 cm3
Specific Torque
21 Nm/bar
1620 Old Apex Road
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