Bosch Rexroth | A10VSO71DFR31R-PPA42N00-TEST-CODE-000
A10VSO71DFR/31R-PPA42N00 Test Code 000
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The A10VSO71DFR/31R-PPA42N00 Test Code 000 pump belongs to the A10VSO Variable Pumps series and is manufactured by Bosch Rexroth. It is used in hydraulic automation where variable displacement regulates system flow and pressure. The unit displaces 71 cm³ (4.33 in³) per revolution so the circuit can scale flow with shaft speed. At 1800 rpm and maximum displacement, it delivers 33.8 gpm (128 l/min), providing moderate flow for medium-size actuators. When operated at nominal speed, flow rises to 41.2 gpm (156 l/min) to support higher duty cycles. Maximum displacement speed is limited to 2200 rpm, preventing excessive wear at full swashplate angle, while a permissible top speed of 2600 rpm enables short bursts of higher throughput when displacement is reduced. Nominal pressure is 4100 psi (280 bar), defining the continuous load the rotating group can withstand, and peak pressure capability of 5100 psi (350 bar) covers transient spikes. The DFR control holds a differential of 200 psi (14 bar) across the orifice to stabilize actuator velocity. Shaft rotation is clockwise, which sets the mounting orientation for standard right-hand drive trains.
At nominal speed and maximum displacement, the pump absorbs 98 HP (73 kW), informing motor selection for the prime mover. The torque demand is 83 lb-ft (113 Nm) at 100 bar, allowing designers to size couplings for low-pressure work, and it rises to 233 lb-ft (316 Nm) at 280 bar for worst-case conditions. A rotating assembly inertia of 0.197 lb-ft² (0.0083 kg·m²) limits acceleration forces on the drivetrain. The internal case holds 0.420 gal (1.6 l) of fluid, providing space for heat dissipation and leakage collection. With no through drive (code N00), the rear housing cannot accept an auxiliary pump, simplifying stack length. Dry weight without a thru-drive is 78 lb (35.2 kg), permitting single-person handling with proper lifting equipment.
Technical Specifications
Case Volume
0.420 gal (1.6 l)
Control Differential Pressure
200 psi (14 bar)
Displacement Per Rev
71 cm³ (4.33 in³)
Dry Weight (no Thru-drive)
78 lb (35.2 kg)
Flow At 1800 Rpm, Vg Max
33.8 gpm (128 l/min)
Flow At Nnom, Vg Max
41.2 gpm (156 l/min)
Max Permissible Speed
2600 rpm
Max Speed At Vg Max
2200 rpm
Maximum Pressure
5100 psi (350 bar)
Moment Of Inertia (jtw)
0.197 lb-ft² (0.0083 kg·m²)
Nominal Pressure
4100 psi (280 bar)
Power At Nnom, Vg Max
98 HP (73 kW)
Rotation Direction
Clockwise
Through Drive
None (N00)
Torque At 100 Bar
83 lb-ft (113 Nm)
Torque At 280 Bar
233 lb-ft (316 Nm)
1620 Old Apex Road
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