Features

Maintenance-free ELGOGLIDE plain bushes ZGB are radial dry plain bearings and comprise a cylindrical steel backing with a sliding layer made from ELGOGLIDE. The steel backing protects the plain bush against damage during handling and mounting.

The plain bushes are available for shaft diameters from 30 mm to 200 mm. They have low friction and good damping behaviour. The dimensions conform to DIN ISO 4379, diameter series 2 and 3.

The plain bushes are very easy to mount. They are pressed into the housing bore and require no further axial location.

Area of application

ELGOGLIDE plain bushes can support higher forces than conventional plain bushes and can therefore be used to replace steel, bronze and plastic bearings.

Since they can support very high radial forces with a uniform load direction as well as high static loads, they are particularly suitable for high alternating loads and swivel motion. They allow some axial motion.

Maintenance-free plain bearing material

The material for the support body is steel and the outside diameter is precision machined.

The sliding layer comprises a 0,5 mm thick layer of ELGOGLIDE, is embedded in synthetic resin and attached by a high strength bond to the support body, ➤ Figure.

The flow behaviour of the sliding layer is, in conjunction with the support body, almost negligible even under very high load. The adhesive bond is resistant to moisture and swelling.

ELGOGLIDE, maintenance-free plain bearing material

 PTFE fabric, comprising PTFE and support fibres ·

 Resin matrix ·

 Support fibres ·

 Steel supporting body ·

 Adhesive bond

ELGOGLIDE designs

For differing requirements, the following are available:

• ELGOGLIDE
  the standard material for very high dynamic contact pressures from 25 N/mm² to 300 N/mm² and a long operating life
• ELGOGLIDE-W11
  the material for dynamic contact pressures from 1 N/mm² to 150 N/mm² and with low coefficients of friction even at low contact pressures.
• The operating limits of the plain bearing materials must be observed.

Resistance of the plain bearing material

The maintenance-free plain bearing material ELGOGLIDE is intended for dry running.

Application in damp environments

For applications involving contact with water, plain bushes with a corrosion-resistant steel support body must be used, suffix W1. Wear of the sliding layer is considerably increased by the flushing effect. The operating life is sufficient in applications with low frequency of motion.

Technical data for ELGOGLIDE

Maintenance-free ELGOGLIDE plain bushes have the following mechanical and physical characteristics, see table.

Characteristics of ELGOGLIDE plain bushes

^**The static load carrying capacity of ELGOGLIDE plain bushes is determined by the steel support body. Plain bushes with a static load carrying capacity of up to 500 N/mm² can be achieved by agreement through the use of a higher strength material for the steel support body.

Sealing

Standard plain bushes without a suffix are not sealed. These can, however, be combined with separate external seals in order to prevent the ingress of contamination and moisture.

Plain bushes ZGB are available by agreement with integrated seals 2RS on both sides or integrated seals RS on one side.

Lubrication

During the running-in phase, PTFE particles are transferred from the sliding layer to the mating surface. As a result, the small roughness features of the shaft surface are filled in. It is only once this tribologically smooth surface is produced in conjunction with the detached PTFE particles that the bearings can achieve a long operating life.

Operating temperature

Maintenance-free ELGOGLIDE plain bushes ZGB are suitable for temperatures from –50 °C to +150 °C.

The sealed plain bushes ZGB..-2RS have a restricted temperature range from –30 °C to +100 °C.

Suffixes

Suffixes for available designs: see table. 

Available designs