PGF3-3X/032RN07VM

The PGF3-3X/032RN07VM internal gear pump belongs to the PGF Internal Gear Pumps series from Bosch Rexroth and serves closed-loop hydraulic automation systems that need stable oil delivery. A displacement of 32.5 cm³ per revolution defines the fixed volume the pump moves each cycle, while a maximum flow rate of 47.1 L/min at 1,450 rpm and 10 bar shows the volume it can supply under common operating conditions. Continuous duty is limited to a maximum operating pressure of 210 bar so circuit components remain within their rated stress range. The rotor is designed for right-hand rotation, matching motors that turn clockwise when viewed from the drive end. A pressure port sized SAE 3/4 streamlines connection to high-pressure lines, and a suction port sized SAE 1 1/4 provides a larger inlet to lower fluid velocity and reduce cavitation risk. The 2-hole attachment with a 52 mm bolt circle simplifies direct mounting to a power unit or bell housing, and a mass of 5.3 kg guides support bracket selection and handling requirements.

The pump must not run below a minimum speed of 500 rpm, because slower rotation would lower the internal oil film and shorten bearing life. Load-free inlet conditions allow a maximum suction pressure of 3 bar to prevent seal extrusion, while the minimum suction pressure of 0.6 bar defines the lowest inlet absolute pressure that still avoids vapor formation. An admissible start viscosity of up to 2,000 mm²/s lets the unit start safely with cold, high-viscosity fluids commonly found in outdoor equipment. A low moment of inertia of 0.00043 kg·m² keeps acceleration torque modest, benefiting electric motors with limited starting capability. For short transients, the housing tolerates a pressure peak of 250 bar, offering a safety margin against hydraulic shocks that appear during rapid load reversals.