A10VO45DFR/52R-VKC64N00 SO97

The A10VO45DFR/52R-VKC64N00 SO97 variable pump belongs to the A10VSO Variable Pumps series and is produced by Bosch Rexroth for closed-loop hydraulic automation. It displaces 45 cm³ per revolution, allowing a predictable volume transfer for each shaft rotation. The unit is rated for a nominal pressure of 4000 psi (280 bar) so it can sustain continuous system loads in industrial circuits. A maximum permitted speed of 3100 rpm supports rapid response when flow demand increases. At 1800 rpm the pump delivers 21.4 gpm, providing a reference point for sizing auxiliary components. It can reach a maximum flow of 30.9 gpm, which defines the upper limit for circuit design. Case drain pressure is limited to 29 psi (2 bar) to protect shaft seals and reduce internal leakage. A moment of inertia of 0.078 lb-ft² enables quick acceleration and deceleration in servo-controlled drive arrangements.

For directional control the flow path is specified from port S to port B, ensuring correct installation orientation within the manifold. The inlet side tolerates an absolute pressure up to 435 psi (30 bar) so cavitation is avoided under boosted suction conditions. Under 280 bar loading the pump can transmit 74 hp, matching common electric motor frames in mobile machinery. When set for maximum displacement the approved speed drops to 2600 rpm to maintain volumetric efficiency. Peak torque reaches 146 lb-ft (200 Nm) at 280 bar, enabling the shaft to overcome transient load spikes. The casing withstands a peak pressure of 5100 psi (350 bar) for short durations, safeguarding against hydraulic shocks. A pilot port with a 7/16-20 UNF-2B thread provides a standard interface for remote control signals or external pressure sensing.