PV7-2X/20-20RA01MA0-10

The PV7-2X/20-20RA01MA0-10 adjustable vane pump belongs to the PV7 Adjustable Vane Pumps series and is produced by Bosch Rexroth for hydraulic automation circuits that require variable flow. Its geometrical displacement of 20 cm³ per revolution defines the volume of oil delivered with each shaft turn, supporting predictable actuator motion. Clockwise shaft rotation matches standard motor couplings, simplifying drive orientation during assembly. A minimum operating speed of 900 rpm keeps the vanes hydrodynamically centered, preventing metal contact at low flow demands. The pump can supply up to 36.0 l/min, providing adequate fluid volume for medium-size hydraulic manifolds. A maximum operating pressure of 100 bar limits the load that can be applied to cylinders and motors without overstressing components. The drive must transmit up to 110 Nm because that is the peak torque required when the pump delivers full pressure at maximum displacement. A G1/2 threaded pressure port offers a common interface for the discharge line, while a larger G3/4 suction port promotes low inlet velocity and reduces the risk of cavitation.

Fluid compatibility is limited to mineral oil HLP conforming to DIN 51524 so that seal materials and wear surfaces receive the intended lubrication chemistry. The oil may reach temperatures as high as 70 °C, a limit that protects elastomers and maintains viscosity within the allowable range, while a cold-start boundary of −10 °C ensures the pump can turn without excessive drag. Viscosity must stay above 16 mm²/s to preserve a stable lubricating film and below 160 mm²/s to prevent volumetric losses and startup overloads. Suction pressure must be kept at least at 0.8 bar absolute, a requirement that mitigates vapor formation at the inlet. The unit weighs 11.4 kg, a factor that influences bracket design and dictates that mounting surfaces be rigid enough to resist vibration during service.