AZPF-21-022RXB07MB SO294

The AZPF-21-022RXB07MB SO294 gear pump belongs to the AZPF External High Performance Gear Pumps series and is produced by Bosch Rexroth. Designed to generate flow for hydraulic automation circuits, it delivers consistent displacement and pressure values for actuators and valves. The geometric displacement of 22.5 cm³ per revolution establishes the volumetric flow rate available for cylinder advance or motor drive. Clockwise rotation aligns with common prime mover orientation, simplifying coupling on right-hand driven power units. A maximum continuous pressure rating of 220 bar permits steady operation in medium-pressure systems without overstressing the housing or gears. Cleanliness class 21/18/15 limits particulate load so internal clearances remain within tolerance during long duty cycles. The pump accepts HLP fluid according to DIN 51524-2 to balance lubrication and anti-wear properties, while NBR seals confine that mineral oil and prevent external leakage. Mounting can be in any position, which eases integration in compact reservoirs.

The rectangular flange front cover with an 80 mm locating pilot centers the housing accurately on standard IEC motor adapters and supports radial loads from the drive shaft. For short duty peaks the unit withstands 250 bar, and transient pressure spikes up to 290 bar are tolerated, enabling brief overload events during rapid directional changes. At the intermittent pressure limit it may run at speeds to 3500 rpm, providing high flow when the machine cycle demands fast actuator movement. System designers must keep speed above 500 rpm when pressure is below 100 bar and viscosity is 12 mm²/s, ensuring hydrodynamic film formation between gear teeth. These parameters collectively define the operating envelope and allow engineers to size relief valves, suction lines, and cooling circuits so the pump maintains efficiency and service life within hydraulic automation installations.