AA2FM107/61W-VSD510

The AA2FM107/61W-VSD510 motor belongs to the A2FM Fixed Motors series and is produced by Bosch Rexroth for closed-loop hydraulic automation where compact, durable rotary actuation is needed. The displacement per revolution is 106.7 cm³, defining the volume of hydraulic fluid converted to shaft movement on each turn. At the nominal pressure of 400 bar it delivers 679 Nm of torque, enabling machines to transmit steady force to connected drives. Maximum working pressure reaches 450 bar so the unit can handle short-term overloads without damage. Nominal speed is 4000 rpm, giving designers flexibility to match pump flow to high-speed cycles. An inlet flow of 427 l/min at rated speed supports continuous operation without cavitation. Bidirectional rotation allows the same motor to run forward or reverse, simplifying circuit design. The shaft sealing ring is formed from FKM, providing chemical resistance to common hydraulic oils and sustaining operation up to the specified fluid temperature. These parameters establish baseline performance for power transmission tasks.

For system integrity the housing can tolerate a continuous case differential pressure of 2 bar and withstands peaks up to 10 bar, which protects internal bearings when back-pressure rises. The total pressure acting on combined ports A and B is limited to 700 bar so circuit designers can size relief valves accordingly and avoid structural fatigue. A minimum high-pressure side load of 25 bar must be maintained to keep the hydrostatic bearings stable during low-load cycles. The motor operates with hydraulic fluid up to 103 °C, matching the temperature capability of its FKM sealing elements. A rotary moment of inertia of 0.0116 kg·m² allows rapid speed changes with modest drive energy, while a torsional stiffness of 11.2 kNm/rad helps maintain positional accuracy under fluctuating loads. These mechanical and hydraulic limits combine to deliver dependable output when the motor is installed in presses, winches, or travel drives that rely on fixed displacement axial-piston units.