PGF1-2X/3 2LN12VM-A387

The PGF1-2X/3 2LN12VM-A387 pump belongs to the PGF Internal Gear Pumps series and is manufactured by Bosch Rexroth for hydraulic automation circuits. It supplies constant flow to compact actuators in machine tools and assembly equipment. Its left-hand direction of rotation allows pairing with drives that run the shaft counter-clockwise from the mounting face. A displacement of 3.2 cm³ per revolution sets the volumetric output for precise metering of oil. When driven at 1450 rpm under 10 bar, the pump delivers 4.6 L/min, providing adequate flow for small clamping functions. The maximum continuous pressure rating of 210 bar supports medium-pressure systems without overstressing the gear set. A permitted pressure peak of 250 bar covers short overloads during rapid cycle changes. The minimum drive speed of 600 rpm prevents internal leakage and secures film formation on bearing surfaces. A two-hole mounting pattern with a 32 mm centering diameter simplifies alignment on standardized motor flanges.

For fluid compatibility, the unit operates with HL or HLP oils specified in DIN 51524, ensuring correct lubricity and aging resistance. Acceptable oil temperatures range from −20 to +100 °C so the pump can start in cold rooms and run in warmed reservoirs without damage. Suction conditions are constrained to a maximum inlet pressure of 3 bar to protect shaft seals, while a minimum inlet pressure of 0.6 bar prevents cavitation at high speeds. The working viscosity window spans 10 to 300 mm²/s, giving latitude for different oil grades, and a starting viscosity limit of 2000 mm²/s allows cold starts with thicker fluids. An FKM seal set resists heat and mineral oil additives, maintaining tightness over long service intervals.