German Rexroth Quantitative Hydraulic Gear Pump with 1500-2800 rpm Speed Range and 28-140 cc/rev Displacement

PGH Rexroth Gear Pumps are widely used in industrial machinery (such as plastic injection molding machines, hydraulic presses) and mobile equipment (including construction machinery like small excavators, and agricultural machinery such as tractors) due to their stable pressure output and compact structure.

First, check if the inlet oil filter is clogged and clean or replace it if necessary; second, inspect the sealing parts of the pump (like O-rings) for damage and replace faulty seals; finally, verify if the relief valve matching the pump is stuck and perform maintenance on the valve.

First, check if the hydraulic oil level is too low (topping up to the standard level if needed); second, inspect for air bubbles in the oil circuit (bleeding the system to remove air); finally, check if the bearing is worn (replacing the bearing if there is excessive radial play).

To avoid clogging internal oil passages or accelerating wear, the hydraulic oil must meet a NAS 8级 (NAS Class 8) cleanliness level. Additionally, use oil with anti-foaming and anti-rust additives to extend the pump's service life.

No, direct interchange is not recommended. The PGH Series has unique mounting dimensions (e.g., flange size, shaft diameter) and flow-pressure curves that differ from other series (such as the PGH4 vs. PGK Series). Interchange may lead to system mismatch or pump failure. Always refer to the Rexroth product catalog for compatibility.