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Group 2, 3 and multiple helical gear pumps plus teflon high pressure shaft seal

Also the Teflon high pressure shaft seal for gear pumps that can stand over-pressures of over 210 bar. The system of radial sealing at the shaft can bear enormous internal over-pressures without resulting in damage. This radial sealing is particularly useful in single direction hydraulic motors when, in certain conditions of use, high over-pressures will be generated at the motor output. With bi-directional motors, the area adjacent to the seal ring of the drive-shaft is maintained at atmospheric pressure by the drainage circuit. In single-direction motors, this area is directly connected to the output so any over-pressure impacts directly on the seal ring, causing the lip to turn over or the ring to be expelled from its seat with a consequent leakage of fluid.

See the hydraulic pumps and motors page (www.jbj.co.uk/pumpsandmotors.html) for further information.

Details

  • jbj Techniques Limited