Bosch Rexroth | AA2FM4561W-VPD510
AA2FM45/61W-VPD510
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The AA2FM45/61W-VPD510 motor is produced by Bosch Rexroth as part of the A2FM Fixed Motors series. It serves hydraulic automation tasks by turning pressurized fluid into constant-speed rotation for pumps, winches, or travel drives. Its displacement of 45.6 cm³ per revolution fixes the correlation between flow and shaft speed. During intermittent duty, the shaft can reach 6200 rpm, supporting quick motion cycles without exceeding mechanical limits. The housing passes up to 255 L/min, giving the circuit high volumetric throughput. Continuous operation is supported at 400 bar, while short overloads up to 450 bar are permitted, defining relief settings for the system. A torque constant of 0.725 Nm per bar allows straightforward calculation of output torque from supply pressure.
A case volume of 0.45 L provides a reservoir for internal leakage oil and prevents pressure buildup behind the seals. Required oil cleanliness of ISO 4406 class 19/17/14 limits abrasive particles that could shorten service life. The rotating group carries a moment of inertia of 0.0024 kg·m², enabling rapid acceleration with low energy loss. Its fkm shaft seal remains functional between −25 °C and +90 °C, covering typical ambient and fluid temperatures. When the inlet reaches 350 bar the motor develops 254 Nm, and at 400 bar it delivers 290 Nm, giving designers clear torque values for sizing mechanical components.
Technical Specifications
Case Volume
0.45 L
Displacement
45.6 cm³/rev
Fluid Cleanliness
ISO 4406 19/17/14
Maximum Flow
255 L/min
Maximum Pressure
450 bar
Maximum Speed (intermittent)
6200 rpm
Moment Of Inertia
0.0024 kg·m²
Nominal Pressure
400 bar
Shaft Seal Temp Range (fkm)
−25 to +90 °C
Torque At 350 Bar
254 Nm
Torque At 400 Bar
290 Nm
Torque Constant
0.725 Nm/bar
1620 Old Apex Road
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