Bosch Rexroth | AA4VG90HD3D132L-NSF52F001D
AA4VG90HD3D1/32L-NSF52F001D
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The AA4VG90HD3D1/32L-NSF52F001D variable pump belongs to the AA4VG Variable Pumps series from Bosch Rexroth and supplies controlled hydraulic flow for mobile or stationary automation circuits. A main displacement of 90 cm³ per revolution sets the volume delivered each shaft turn, while HD hydraulic proportional control changes the swashplate angle to adjust output flow in response to a pilot signal. Counter-clockwise rotation is specified so installers can align prime movers correctly. The nominal speed of 3050 rpm represents the continuous running limit that balances efficiency and durability, and at this speed the pump can deliver 275 l/min to actuators. A nominal pressure rating of 400 bar defines the steady operating load the housing and rotating group can withstand. When the system reaches 400 bar the input shaft must supply 573 Nm, and the corresponding power demand is 183 kW; these figures help size engines or electric motors that drive the unit.
A maximum pressure of 450 bar provides headroom for short transients without damaging the pump. The intermittent speed ceiling of 3800 rpm allows brief over-speed conditions during rapid load changes. A rotor moment of inertia of 0.0149 kg·m² influences acceleration and deceleration times in closed-loop drive control. An internal boost pump displacement of 19.6 cm³ per revolution maintains case filling and keeps the main inlet charged. The 1 3/4 in 13T 8/16DP splined shaft forms the mechanical interface for torque transfer from the prime mover. Mounting follows the SAE J744 152-2/4 (D) flange pattern so the pump can bolt directly to standard bell housings. Port plate code 52 places A and B work ports on both the top and bottom faces with the S suction port on the bottom, simplifying hose routing in compact installations. There is no through drive, which confines power take-off to this pump alone.
Technical Specifications
Boost Pump Displacement
19.6 cm³/rev
Control Type
HD (Hydraulic Proportional)
Direction Of Rotation
Counter-clockwise
Displacement
90 cm³/rev
Drive Shaft Spline
1 3/4 in 13T 8/16DP
Flow At Nnom (vg Max)
275 l/min
Intermittent Max Speed
3800 rpm
Maximum Pressure
450 bar
Moment Of Inertia
0.0149 kg m²
Mounting Flange
SAE J744 152-2/4 (D)
Nominal Pressure
400 bar
Nominal Speed (nnom)
3050 rpm
Port Plate
52 (A/B top & bottom; S bottom)
Power At 400 Bar (nnom)
183 kW
Through Drive
None
Torque At 400 Bar
573 Nm
1620 Old Apex Road
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