Bosch Rexroth | AA2FM9061W-VQDN520
AA2FM90/61W-VQDN520
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The AA2FM90/61W-VQDN520 motor is produced by Bosch Rexroth within the A2FM Fixed Motors series and serves as a compact axial piston unit for hydraulic automation. Its geometric displacement of 90.5 cm³ per revolution sets the volume of oil delivered each turn, while a nominal pressure rating of 400 bar allows continuous operation in high-force circuits. At this pressure the shaft produces 576 Nm of torque, providing direct mechanical power to winches or travel drives. The motor can reach a nominal speed of 4500 rpm, enabling high peripheral velocities when flow is available. Bidirectional rotation lets the same unit drive loads in either direction without external reconfiguration, and FKM sealing material maintains fluid containment under elevated temperatures and aggressive media.
A maximum pressure limit of 450 bar gives additional headroom for short-term overloads, and the inlet can accept up to 407 L/min so the motor can attain peak speed without cavitation. The internal case volume of 0.65 L stores leakage oil that lubricates moving parts and aids thermal balance. A moment of inertia of 0.0058 kg·m² minimizes the energy required for acceleration changes, while rotary stiffness of 9.85 kNm/rad keeps torsional deflection low for precise motion control. The complete assembly weighs 23 kg, a consideration for mounting on mobile equipment or inside confined power packs.
Technical Specifications
Case Volume
0.65 L
Direction Of Rotation
Bidirectional
Geometric Displacement
90.5 cm³/rev
Maximum Inlet Flow
407 L/min
Maximum Pressure
450 bar
Moment Of Inertia
0.0058 kg·m²
Nominal Pressure
400 bar
Nominal Speed
4500 rpm
Rotary Stiffness
9.85 kNm/rad
Sealing Material
FKM
Torque At 400 Bar
576 Nm
Weight
23 kg
1620 Old Apex Road
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