Bosch Rexroth | AA2FM1061W-VSC530
AA2FM10/61W-VSC530
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The AA2FM10/61W-VSC530 motor is manufactured by Bosch Rexroth and belongs to the A2FM Fixed Motors series. It is a bent-axis hydraulic unit intended to convert constant pump flow into rotation for compact automation drives. A geometric displacement of 10.3 cm³ per revolution defines the flow the motor can process, and a nominal speed of 8000 rpm permits direct coupling to high-speed shafts. At that speed, inlet flow reaches 82 L per minute, matching the delivery of small closed-loop pumps. Continuous duty is supported by a nominal pressure of 400 bar, while the motor can tolerate maximum pressure peaks up to 450 bar. The high-pressure side must stay above 25 bar to avoid cavitation. A housing volume of 0.17 L helps circulate oil for cooling, and a continuous case differential pressure of 2 bar ensures leakage flow is safely routed to the drain.
During rapid load changes, the motor handles angular accelerations up to 5000 rad/s², aided by a low rotating group inertia of 0.0004 kg·m². It delivers 66 Nm of torque at the nominal pressure and offers a rotary stiffness of 0.92 kNm/rad to limit shaft twist under load. System response benefits from an allowable pressure rise rate of 16000 bar/s when no relief valve is installed. The design endures a combined inlet and return total pressure of 700 bar for brief events, and the housing withstands case pressure peaks of 10 bar; an adequately sized drain line is therefore required to protect seals.
Technical Specifications
Case Differential Pressure (continuous)
2 bar
Case Pressure Peak
10 bar
Case Volume
0.17 l
Displacement (geometric)
10.3 cm3/rev
Inlet Flow At Nominal Speed
82 l/min
Maximum Angular Acceleration
5000 rad/s^2
Maximum Pressure
450 bar
Min Pressure (high-pressure Side)
25 bar
Moment Of Inertia
0.0004 kg·m²
Nominal Pressure
400 bar
Nominal Speed
8000 rpm
Rate Of Pressure Change (no Prv)
16000 bar/s
Rotary Stiffness
0.92 kNm/rad
Torque At Nominal Pressure
66 Nm
Total Pressure (a+b)
700 bar
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