PGF1-21/2.2RL01VM

The PGF1-21/2.2RL01VM internal gear pump belongs to the PGF Internal Gear Pumps series and is produced by Bosch Rexroth. It is intended for hydraulic automation circuits where compact constant-flow sources are required. The pump delivers a displacement of 2.2 cm³ per revolution, which, at 1 450 rpm and a system back-pressure of 10 bar, yields a flow of 3.2 L/min for small actuator groups. Continuous operation is permitted up to 210 bar, providing stable pressure for machine tool lubrication or servo valve supply manifolds. Reliable suction is maintained once the drive reaches the minimum speed of 600 rpm, and the shaft is configured for clockwise rotation to match standard motor arrangements. An aluminum housing limits mass and improves heat dissipation, keeping overall weight to 0.9 kg so the unit can be mounted directly on compact power packs without reinforcement.

In intermittent duty the PGF1-21/2.2RL01VM can be loaded to 250 bar, allowing brief high-pressure cycles during clamping or rapid traverse functions. The inlet side tolerates absolute pressures from 0.8 bar to 2.0 bar, so it can draw from flooded reservoirs or low head tanks without cavitation. Output torque at the drive shaft reaches 14 Nm under maximum differential pressure, a value that guides motor sizing and coupling selection. Hydraulic connections use a G 1/4 pressure port thread, and the flange incorporates a 32 mm centering pilot to align the pump on IEC or NEMA adapter plates. Fluid sealing relies on FKM elastomers, giving compatibility with common mineral oils and many synthetic blends used in modern systems. These parameters define the working envelope, installation details, and fluid compatibility necessary for integrating the pump into automated hydraulic power modules.