Bosch Rexroth | AA2FM6361W-VSD510
AA2FM63/61W-VSD510
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The AA2FM63/61W-VSD510 is a fixed displacement motor from the A2FM Fixed Motors series manufactured by Bosch Rexroth for hydraulic automation systems that require compact, high-pressure rotary drives. A displacement of 63 cm³ per revolution sets the fluid volume moved each turn and therefore the base torque capability. Alternating direction of rotation identified by the “W” code lets the shaft run in either direction, which removes the need for an external reversing gearbox. Continuous duty is defined by a nominal pressure of 400 bar, while a maximum pressure of 450 bar tolerates short overloads without damage. A maximum speed of 5000 rpm supports high-speed travel drives, and the corresponding maximum flow of 315 L/min tells the designer the pump size required at this speed. The torque constant of 1.00 Nm per bar gives a direct relation between system pressure and output torque, and a 0.55 L case volume provides space for internal leakage oil before it returns to tank.
A rotor moment of inertia of 0.0042 kg·m² limits mass effects so the motor accelerates quickly when control valves open. For brief duty cycles the shaft can reach 5500 rpm, allowing faster acceleration or deceleration than the continuous limit. Output torque reaches 350 Nm at 350 bar and rises to 400 Nm at 400 bar, supplying the force required for heavy work functions. Cold-start viscosity allowance up to 1600 mm²/s permits operation with thick oil, and a minimum fluid temperature of −40 °C ensures reliable winter starts. A short-term fluid temperature limit of 115 °C protects seals during heat spikes, while the 18 kg weight balances portability with mechanical strength. Together these parameters equip the motor for dependable, bidirectional actuation in mobile or industrial hydraulic circuits.
Technical Specifications
Case Volume
0.55 L
Direction Of Rotation
Alternating (W)
Displacement
63 cm³/rev
Max Flow (at Nmax)
315 L/min
Max Fluid Temperature (short‑term)
115 °C
Max Speed
5000 rpm
Max Speed (intermittent)
5500 rpm
Max Viscosity (cold Start)
1600 mm²/s
Maximum Pressure
450 bar
Min Fluid Temperature (cold Start)
-40 °C
Moment Of Inertia
0.0042 kg·m²
Nominal Pressure
400 bar
Torque At 350 Bar
350 Nm
Torque At 400 Bar
400 Nm
Torque Constant
1.00 Nm/bar
Weight
18 kg
1620 Old Apex Road
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