AZPF-12-008RCB20KB

The AZPF-12-008RCB20KB gear pump belongs to the AZPF External High Performance Gear Pumps series from Bosch Rexroth and supplies fixed-displacement flow to hydraulic automation circuits. It delivers 8.0 cm³ of oil per revolution, giving designers a predictable volume for actuator metering. Clockwise rotation is required, so the pump matches right-hand power-take-off arrangements in mobile or industrial drives. A tapered 1:5 drive shaft transmits torque with reduced key stress and simplifies centering in pulleys or couplings. The rectangular 80 mm front flange aligns the housing against machine faces while maintaining compact dimensions, and rectangular flange ports coded 20 present standardized suction and pressure connections that minimize piping adapters. M6 mounting threads cut 13 mm deep let the body bolt solidly to bracket plates without excessive fastener length. An FKM shaft seal identified by code KB withstands hot oil and resists synthetic fluid additives, keeping leakage low during continuous duty.

Continuous operation is rated to 250 bar, allowing the pump to maintain steady actuator motion in high-pressure circuits. It tolerates intermittent pressure up to 280 bar so short load surges do not cause fatigue, and it absorbs peaks of 300 bar that can appear during rapid valve shifts. The maximum speed at the P2 pressure port reaches 4000 rpm, letting compact prime movers achieve full flow without oversize gearing. Minimum speed limits protect the internal hydrodynamic bearings: 500 rpm is sufficient when system pressure stays below 100 bar, 1000 rpm is needed within the 100–180 bar range, and 1400 rpm is required as pressure climbs toward P2. When the pump is working at P2 with a viscosity of 25 mm²/s, a reduced minimum of 700 rpm preserves lubrication while limiting noise. These pressure and speed boundaries guide drive selection so the unit delivers reliable volume efficiency throughout variable-duty hydraulic machines.