Bosch Rexroth | PGF3-3X020LN20VM
PGF3-3X/020LN20VM
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The PGF3-3X/020LN20VM internal gear pump is produced by Bosch Rexroth within the PGF Internal Gear Pumps series. Designed as a fixed-displacement source for hydraulic automation circuits, it delivers consistent flow to actuators and valves. The pump’s displacement of 20.6 cm³ per revolution defines the volume moved each shaft turn, giving predictable output when paired with speed control. A left-hand rotation orientation suits power units that place the drive motor on the right side. Operating speed may vary between 500 and 3600 min-1 so users can adapt flow to demand without exceeding mechanical limits. The unit sustains 210 bar as a continuous pressure and tolerates 250 bar for brief overloads, allowing it to handle both steady duty and short peak loads. A 2-hole mounting face simplifies rigid attachment to subplates, while the square flange in accordance with DIN 3901/3902 provides standardized port alignment. With a mass of 3.3 kg, the pump is light enough for one-person installation.
Accurate positioning during assembly is aided by a centering diameter of 52 mm, which holds the housing concentric to the drive train. Hydraulic connections follow a pressure-port pitch circle of 35 mm and a suction-port pitch circle of 55 mm, dimensions that match common manifold blocks. Inlet conditions are controlled within an absolute pressure window of 0.6 to 3 bar so that the gear cavities remain filled without imposing excessive seal load. The FKM sealing elements withstand hot mineral oils and many synthetic fluids, extending service life under elevated temperatures. System cleanliness must reach ISO 4406 class 20/18/15 to prevent wear of the internal gear set and preserve volumetric efficiency. Together, these geometric, pressure, and contamination limits ensure the PGF3-3X/020LN20VM operates reliably in compact power packs and centralized lubrication systems.
Technical Specifications
Centering Diameter
Ø52 mm
Cleanliness Class
ISO 4406 20/18/15
Connection Type
Square Flange (DIN 3901/3902)
Direction Of Rotation
Left
Displacement
20.6 cm3/rev
Max Continuous Pressure
210 bar
Max Inlet Absolute Pressure
3 bar
Max Intermittent Pressure
250 bar
Max Speed
3600 min–1
Min Inlet Absolute Pressure
0.6 bar
Min Speed
500 min–1
Mounting Type
2-Hole
Pressure Port Pitch Circle
Ø35 mm
Seal Material
FKM
Suction Port Pitch Circle
Ø55 mm
Weight
3.3 kg
1620 Old Apex Road
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