PGH4-3X/020RR11VU2

The PGH4-3X/020RR11VU2 gear pump is manufactured by Bosch Rexroth as part of the PGH High Pressure Gear Pumps series. It delivers fixed-volume flow for hydraulic automation such as press drives and injection units. A displacement of 20.10 cm³ per revolution supplies consistent fluid volume each shaft turn, while the right-hand rotation matches common clockwise prime movers. The unit reaches full performance from a minimum speed of 200 rpm so low-speed electric motors can drive it directly. At nominal conditions it supports a maximum flow of 60 L/min, providing adequate supply for medium-sized actuator groups. A 2-hole 101-2 mounting flange according to ISO 3019-1 simplifies alignment on standardized pump ports, and the housing accepts an additional shaft because through-drive capability is present for tandem arrangements. Total mass is 14.14 kg, enabling single-person handling during installation.

Operating limits reach 315 bar continuous pressure to maintain force in high-load cylinders, and short peaks of 350 bar accommodate transient shocks during rapid cycle changes. The pressure connection follows ISO 6162-2 high-pressure standards so the pump mates directly with SAE flange plumbing. FKM seals are fitted to resist aggressive hydraulic media and maintain leakage control over long service intervals. Approved fluids include HLP, HEES, and HFDU types, giving the user options for mineral, synthetic ester, or fire-resistant formulations. Fluid temperatures can be as low as −10 °C and as high as +80 °C, allowing outdoor or warmed reservoir operation without viscosity problems. These thermal and chemical capabilities ensure the pump retains volumetric efficiency across varied environments while integrating smoothly with high-pressure manifolds and multi-pump stacks in automated machinery.