Bosch Rexroth | SRMCR3D400L40Z32A0M1L01
SRMCR3D400L40Z32A0M1L01
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The SRMCR3D400L40Z32A0M1L01 motor is part of the MCR Radial Piston Motors series from Bosch Rexroth. It converts hydraulic flow into controlled rotation for mobile or industrial drives. The unit’s displacement of 400 cm³ per revolution defines the volume of hydraulic fluid that produces each turn, establishing its output flow relationship. A specific torque of 6 Nm per bar shows how much torque rises with system pressure for predictable load calculations. The drive shaft diameter of 40 mm accommodates couplings sized for medium power transmission. A maximum torque rating of 1500 Nm enables the motor to start heavy loads without stalling. When inlet conditions allow, it reaches a top speed of 270 rpm, while the minimum speed of 0.5 rpm supports low-velocity positioning tasks without stick-slip. Overall length is 281.3 mm, and the housing weighs 21 kg, factors important when sizing the motor inside compact machinery.
For hydraulic circuit design, the inlet and outlet share a 7/8-14 UNF port thread conforming to SAE J514, which simplifies hose selection. The case drain uses a separate 9/16-18 UNF port so leakage oil can return to tank without backpressure. Case drain pressure must stay below 10 bar to protect shaft seals, whereas the motor tolerates a differential pressure up to 400 bar across its work ports for high power density. Individual port pressure may peak at 420 bar, giving short-term overload capability. Mounting is handled through four holes, each with a 14 mm diameter, allowing the frame to bolt rigidly to gearboxes or machine plates. These interface figures complete the mechanical and hydraulic data needed to integrate the motor into automated systems.
Technical Specifications
Case Drain Port Thread
9/16-18 UNF (SAE J514)
Displacement
400 cm3/rev
Drive Shaft Diameter
40 mm
Inlet/outlet Port Thread
7/8-14 UNF (SAE J514)
Length
281.3 mm
Max Case Drain Pressure
10 bar
Max Differential Pressure
400 bar
Max Port Pressure (a/b)
420 bar
Maximum Speed (1l)
270 rpm
Maximum Torque
1500 Nm
Minimum Speed
0.5 rpm
Mounting Hole Count
4
Mounting Hole Diameter
14 mm
Specific Torque
6 Nm/bar
Weight
21 kg
1620 Old Apex Road
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