Bosch Rexroth | AA2FM16061W-VSD520
AA2FM160/61W-VSD520
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The AA2FM160/61W-VSD520 motor is manufactured by Bosch Rexroth within the A2FM Fixed Motors series. Designed for hydraulic automation, it converts hydraulic energy into rotary motion for constant-displacement tasks. Its displacement is 160.4 cm³ per revolution, establishing the volumetric output each shaft turn can deliver. Bidirectional rotation permits flow reversal without external gear changes. A nominal speed of 3600 rpm defines the highest continuous operating speed, while the required inlet flow at this speed is 577 l/min to maintain full displacement. The motor sustains a nominal pressure of 400 bar and can accept up to 450 bar, so it handles high-pressure circuits without derating. Under nominal pressure it generates 1021 Nm of torque, making it suitable for heavy-duty drives. The unit weighs 45 kg, which influences mounting structures and support hardware.
The case volume is 1.1 l, providing internal capacity for fluid leakage management and cooling. A maximum angular acceleration of 3500 rad/s² defines how quickly the shaft speed can be ramped without exceeding mechanical limits. The pressure ramp capability reaches 16000 bar/s when no pressure relief valve is present, enabling rapid system response in fast actuation cycles. For stable operation the high-pressure port must retain at least 25 bar, preventing cavitation during low load conditions. A moment of inertia of 0.022 kg·m² minimizes energy needed to change speed, while rotary stiffness of 17.4 kNm/rad limits torsional deflection under load. FKM seals are used to resist high-temperature hydraulic fluids and extend service life in aggressive environments.
Technical Specifications
Case Volume
1.1 l
Direction Of Rotation
Bidirectional
Displacement
160.4 cm³/rev
Inlet Flow At Nnom
577 l/min
Max Angular Acceleration
3500 rad/s²
Max Pressure Ramp (no Prv)
16000 bar/s
Maximum Pressure
450 bar
Min High-pressure Side Pressure
25 bar
Moment Of Inertia
0.022 kg·m²
Nominal Pressure
400 bar
Nominal Speed
3600 rpm
Rotary Stiffness
17.4 kNm/rad
Seal Material
FKM
Torque At Pnom
1021 Nm
Weight (approx.)
45 kg
1620 Old Apex Road
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