Bosch Rexroth | MCR20C3000F280Z32B19M1L11
MCR20C3000F280Z32B19M1L11
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The MCR20C3000F280Z32B19M1L11 radial piston motor is part of the MCR Radial Piston Motors series from Bosch Rexroth and is intended to convert hydraulic power into controlled rotation for heavy-duty automation. It offers a displacement of 3,000 cm³ per revolution, allowing high flow rates to be translated into low-speed torque. A specific torque rating of 44 Nm per bar defines the proportional relationship between pressure and output torque, while a peak value of 19,099 Nm can be reached when full load is applied. Continuous operation is possible down to 0.5 rpm, which supports direct drive of slowly moving machinery. Structural integrity is maintained up to a differential pressure of 450 bar, and mechanical attachment is provided by a 280 mm mounting flange diameter. There is no rear shaft, so the unit can be mounted flush against supporting structures, and its weight of 121 kg must be supported by the frame or gearbox.
The motor’s integrated brake supplies 19,000 Nm of holding torque to secure loads whenever hydraulic power is removed. Releasing the brake requires 99 cm³ of oil, and the release circuit must generate between 15 bar and 30 bar to disengage the mechanism. Service ports A and B tolerate working pressures up to 470 bar, giving headroom for transient peaks, while case drain flow must see no more than 10 bar to protect internal sealing surfaces. All seals are made from NBR to balance chemical compatibility with cost. These pressure, brake, and sealing parameters enable the unit to manage high load cycles safely within typical hydraulic system capabilities.
Technical Specifications
Brake Holding Torque
19000 Nm
Brake Release Oil Volume
99 cm³
Brake Release Pressure (max)
30 bar
Brake Release Pressure (min)
15 bar
Displacement
3000 cm³/rev
Max Case Drain Pressure
10 bar
Max Differential Pressure
450 bar
Max Pressure At Port A/b
470 bar
Maximum Torque
19099 Nm
Minimum Speed
0.5 rpm
Mounting Flange Diameter
280 mm
Rear Shaft
None
Seals
NBR
Specific Torque
44 Nm/bar
Weight
121 kg
1620 Old Apex Road
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