AZPF-12-019-RQR12MB

The AZPF-12-019-RQR12MB gear pump is part of the AZPF External High Performance Gear Pumps series from Bosch Rexroth. It supplies hydraulic power in automation circuits by converting mechanical input to a steady fluid flow. A geometric displacement of 19 cm³ per revolution determines the volume delivered each shaft turn and helps size the pump for target actuator speeds. Clockwise rotation matches common engine and motor directions, simplifying drive selection. The unit supports a maximum continuous pressure of 210 bar so it can maintain high load operation without excessive wear, while a maximum intermittent pressure rating of 170 bar allows brief overloads during short duty cycles. Pressure peaks up to 250 bar are tolerated for transient surges caused by shock loads. A maximum speed capability of 3500 rpm accommodates high flow requirements, and a minimum speed of 500 rpm at pressures below 100 bar protects internal bearings and gear teeth by ensuring adequate lubrication during low-demand conditions.

Installation features are based on an SAE J744 82-2 (A) two-bolt mounting flange, providing standard hole spacing for quick attachment to motors or brackets. The flange pilot diameter of 82.55 mm centers the housing accurately, preventing misalignment that could load the shaft. A shaft diameter of 15.875 mm matches common keyed couplings, allowing direct connection to electric or internal-combustion power sources. The pressure port uses an 11/16-12 UN-2B thread to secure high-pressure lines, while the suction port is threaded 7/8-14 UNF-2B to accept larger return hoses that reduce inlet losses. NBR sealing material resists common hydraulic oils and maintains leak-free operation over the pump’s temperature range. The assembled pump weighs 3.9 kg, light enough for single-person handling during service yet robust for industrial duty cycles. Together these mechanical details facilitate reliable integration into mobile and stationary hydraulic systems without custom adapters.