Bosch Rexroth | AA2FM16061W-VSD527
AA2FM160/61W-VSD527
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The AA2FM160/61W-VSD527 motor belongs to the A2FM Fixed Motors series from Bosch Rexroth and serves as a displacement unit for hydraulic automation circuits. It provides a geometric displacement of 160.4 cm³ per revolution, which defines the fluid volume moved each rotation. At the nominal speed of 3600 rpm, the inlet flow reaches 577 l/min, allowing high flow rates for demanding actuators. The unit develops 1021 Nm of torque at the nominal pressure of 400 bar, supplying substantial shaft power for mobile or industrial drives. A bidirectional rotation capability means it can drive or be driven in either direction without redesigning the circuit. The rotary group moment of inertia is 0.022 kg·m², supporting quick acceleration profiles, and the maximum angular acceleration tolerated is 3500 rad/s², which permits rapid load changes without overshoot.
The housing accommodates 1.1 l of case volume, and the continuous case differential pressure is limited to 2 bar to protect internal bearings. Transient spikes up to 10 bar for less than 0.1 s are accepted, covering short pressure surges during startup or load reversal. System designers can operate the motor up to a maximum pressure of 450 bar, while the total pressure across the A and B ports must stay within 700 bar to avoid overstressing the cylinder block. A minimum high-pressure side pressure of 25 bar is required to maintain hydrostatic bearing stability. Fluid exclusion is handled by an FKM seal, offering compatibility with common mineral oils and tempered fluids. These limits work together to ensure durability and allow the motor to integrate into closed or open loop hydrostatic transmissions without additional safeguard devices.
Technical Specifications
Case Differential Pressure (continuous)
2 bar
Case Pressure Peak (t < 0.1 S)
10 bar
Case Volume
1.1 l
Direction Of Rotation
Bidirectional
Geometric Displacement
160.4 cm³/rev
Inlet Flow At Nominal Speed
577 l/min
Maximum Angular Acceleration
3500 rad/s²
Maximum Pressure
450 bar
Minimum High-pressure Side Pressure
25 bar
Moment Of Inertia (rotary Group)
0.022 kg·m²
Nominal Pressure
400 bar
Nominal Speed
3600 rpm
Seal Material
FKM
Torque At Nominal Pressure
1021 Nm
Total Pressure (a+b Ports)
700 bar
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