A10VSO100DFR1/31R-VPA12N00

The A10VSO100DFR1/31R-VPA12N00 pump belongs to the A10VSO Variable Pumps series and is manufactured by Bosch Rexroth for variable displacement hydraulic automation. A displacement of 100 cm³ per revolution defines the volume delivered during each shaft rotation and sets the baseline for system flow calculations. The DFR1 control type modulates displacement in response to load pressure, enabling automatic adjustment without external electronics. At 1800 rpm the pump delivers 180 l/min, providing steady flow for medium-capacity actuators. Its maximum flow at nominal speed reaches 200 l/min, allowing short-term demand peaks to be covered. A maximum permissible speed of 2400 rpm gives design flexibility when higher drive speeds are available. The suction port is 2 1/2 in according to ISO 6162-1, which minimizes inlet restriction and supports cavitation-free operation. Pressure flow exits through a 1 1/4 in working port conforming to ISO 6162-2, simplifying hose selection in standardized systems. Installation relies on a two-hole ISO 3019-1 mounting flange so the housing aligns accurately on compatible power units.

Internal case volume is 1.6 l, providing space for fluid leakage collection and heat dissipation inside the housing. A drain port threaded 1 1/16-12 UNF-2B allows reliable return flow of case oil to the reservoir. Control signals enter through a 7/16-20 UNF-2B pilot port, offering a common fitting size for pressure lines. When set to maximum displacement the allowable speed falls to 2000 rpm, preventing excessive piston loads. With 280 bar supply pressure the drive shaft must transmit up to 445 Nm of torque, guiding motor selection. Rotor inertia is 0.0083 kg·m², which influences acceleration response in servo-controlled drives. There is no through drive, designated N00, so the unit cannot directly couple another pump in tandem. A mass of 49.5 kg influences lifting provisions and foundation strength during installation.