Bosch Rexroth Internal Gear Pump - PGF

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External gear pumps basically consist of one gear wheel pair and the housing with one front and one rear cover. The drive shaft drives one of the two gear wheels which again drives the second gear wheel in the opposite direction. Due to the rotation, hydraulic fluid is entrapped in the gear chambers and delivered along the housing from the suction port to the pressure port. The flow per rotation roughly corresponds to the total of the gear chamber volumes of the two gears.

The 2X component series gear pump sizes consist of: frame size 1: 1.7, 2.2, 2.8, 3.2, 4.1, 5, 6.3, 8, 11, 13, 16, 19, and 22, with frame size 2 comprising: 6.3, 8, 11, 13, 16, 19, and 22. The 3X component series sizes consist of: 20, 25, 32, and 40. The pump has a peak pressure of 250 bar and a maximum displacement volume of 40.5 cm3.

Some of the features of the gear pump include:

  • Fixed displacement.
  • Low operating noise.
  • Low flow pulsation.
  • Suitable for broad viscosity and speed ranges.
  • Very good suction characteristic.
  • Long life cycle due to plain bearings and sealing gap compensation.
Bosch Rexroth PGF

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