Bosch Rexroth | AA4VG40DGD132R-NSC52F015S-S
AA4VG40DGD1/32R-NSC52F015S-S
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The AA4VG40DGD1/32R-NSC52F015S-S is produced by Bosch Rexroth for the AA4VG Variable Pumps series and supplies regulated hydraulic flow to mobile and industrial automation circuits. The geometric displacement is 40 cm³ per revolution, establishing the volume transferred with each shaft turn. At 4 000 rpm and maximum displacement it delivers 160 L/min, which supports high cylinder or motor speeds. Under 400 bar system pressure at the same speed the pump transmits 107 kW, so the prime mover must deliver that power. A drive torque of 255 Nm is required at 400 bar, guiding coupling selection. Continuous operating pressure is limited to 400 bar, ensuring component life in heavy-duty cycles. With no differential pressure the allowable top speed is 4 000 rpm, defining the safe limit for high-flow operation. The shaft can slow to 500 rpm and still maintain internal lubrication for standby modes. An integrated boost stage displaces 8.6 cm³ per revolution to keep the main group supplied with charge oil.
For brief overload events the maximum pressure climbs to 450 bar, giving additional force capacity during short spikes. Intermittent operation allows 5 000 rpm, while a reduced continuous cap of 4 200 rpm is imposed when thermal balance is critical. A permitted angular acceleration of 30 000 rad/s² lets the unit follow rapid engine transients without cavitation. The rotating group’s moment of inertia is 0.0038 kg·m², keeping acceleration torque demands moderate. At 100 bar line pressure the required drive torque is 64 Nm, a value useful for part-load efficiency checks. The housing holds 1.1 L of case oil to absorb leakage and stabilize temperature during prolonged duty.
Technical Specifications
Boost Pump Displacement
8.6 cm3
Case Volume
1.1 l
Flow At 4000 Rpm (vg Max)
160 l/min
Geometric Displacement
40 cm3/rev
Intermittent Max Speed
5000 rpm
Limited Max Speed
4200 rpm
Max Speed (vg Max, Δp=0)
4000 rpm
Maximum Angular Acceleration
30000 rad/s2
Maximum Pressure
450 bar
Minimum Speed
500 rpm
Moment Of Inertia (rotary Group)
0.0038 kg m2
Nominal Pressure
400 bar
Power At 400 Bar And 4000 Rpm
107 kW
Torque At 100 Bar
64 Nm
Torque At 400 Bar
255 Nm
1620 Old Apex Road
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