Bosch Rexroth | AA2FM9061W-VSD510
AA2FM90/61W-VSD510
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The AA2FM90/61W-VSD510 hydraulic motor is part of the A2FM Fixed Motors series from Bosch Rexroth and is designed to convert pressurized fluid into continuous rotation for mobile and industrial automation. Its displacement of 90.5 cm³ per revolution sets the volumetric output per cycle, while a compact 0.65 L case volume keeps the assembly small yet maintains internal oil capacity. A nominal speed limit of 4500 rpm governs continuous operation, and a nominal pressure of 400 bar defines the baseline working load. At that pressure the shaft can deliver 576 Nm of torque to downstream machinery. A splined shaft provides positive torque transfer, bidirectional rotation lets the same unit drive in either direction without external changes, and FKM seals contain high-temperature hydraulic fluids to extend service life.
The design tolerates a maximum pressure of 450 bar for transient overloads, and a peak inlet flow of 405 L/min supplies enough fluid to reach top speed. A moment of inertia of 0.0054 kg·m² minimizes energy required to change speed, cooperating with an allowable angular acceleration of 4500 rad/s² for fast starts and stops. Rotary stiffness rated at 9.84 kNm/rad limits torsional twist so drive accuracy remains stable. The SAE J744 four-hole mounting flange simplifies attachment to standard gearboxes or frames, while port plate 510 positions SAE ports at the rear to streamline hose layout.
Technical Specifications
Case Volume
0.65 L
Direction Of Rotation
Bidirectional
Displacement
90.5 cm^3/rev
Drive Shaft Type
Splined Shaft
Inlet Flow (max)
405 L/min
Max Angular Acceleration
4500 rad/s^2
Maximum Pressure
450 bar
Moment Of Inertia
0.0054 kg·m^2
Mounting Flange
SAE J744 4-Hole
Nominal Pressure
400 bar
Nominal Speed
4500 rpm
Port Plate
510 (SAE Ports Rear)
Rotary Stiffness
9.84 kNm/rad
Seal Material
FKM
Torque At 400 Bar
576 Nm
1620 Old Apex Road
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