Bosch Rexroth | AA4VG90HD3DT132R-NSF52F041D-S
AA4VG90HD3DT1/32R-NSF52F041D-S
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The AA4VG90HD3DT1/32R-NSF52F041D-S variable pump belongs to the AA4VG Variable Pumps series manufactured by Bosch Rexroth for closed-loop hydraulic automation. It offers a geometric displacement of 90 cm³ per revolution, enabling a flow of 275 L/min when operating at the rated speed of 3,050 rpm and full displacement volume. At a pressure differential of 400 bar, the pump delivers 183 kW and produces 573 Nm of shaft torque. Continuous duty is supported by a nominal pressure of 400 bar, while the design tolerates momentary rises to a maximum pressure of 450 bar. For short periods the shaft can run up to 3,300 rpm, giving users headroom above the nominal speed for transient conditions.
A separate boost stage displaces 19.6 cm³ per revolution to maintain inlet charge, with a nominal boost pressure of 25 bar and an allowable peak of 40 bar. The control system requires at least 20 bar above case pressure on the X1/X2 ports, and the low-side pressure must stay 10 bar above case to prevent cavitation. Mechanical load sharing is aided by a maximum through-drive torque capacity of 822 Nm, making it suitable for tandem arrangements. Hydraulic connections include a 9/16-18 UNF thread on the control ports and a 1 5/8-12 UN-2B thread on the suction port, aligning the pump with standard manifold and hose fittings.
Technical Specifications
Boost Pump Displacement
19.6 cm3/rev
Control Ports X1/x2 Thread
9/16-18 UNF
Flow At Nnom And Vg Max
275 l/min
Geometric Displacement
90 cm3/rev
Maximum Boost Pressure
40 bar
Maximum Pressure
450 bar
Maximum Speed (nmax1)
3300 rpm
Maximum Through-drive Torque
822 Nm
Minimum Control Pressure (hd)
20 bar above case
Minimum Low-side Pressure
10 bar above case
Nominal Boost Pressure
25 bar
Nominal Pressure
400 bar
Power At Δp = 400 Bar
183 kW
Rated Speed (nnom)
3050 rpm
Suction Port Thread
1 5/8-12 UN-2B
Torque At Δp = 400 Bar
573 Nm
1620 Old Apex Road
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