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SOBB oilless thrust bush, SO#50SP2 copper with graphite

Material Specs
Thrust Bush


  SOBB thrust bush, Split Type, SO#50SP2 copper with graphite  

SOBB thrust bush consist of highly wear-resistance copper cast alloy whose sliding surfaces are evenly provided with a certain percentage of solid lubricant plugs according to work condition, high-strength copper alloy provides a high load-bearing capacity and the solid lubricant can be formation of low friction film.

Under technical dry running conditions, the bearing surface is designed with thick running-in film which
enables the solid lubricant to be transferred to the counter material at the first contact.


①  Solid lubricant film
②  Solid lubricant plug
③  Bronze backing

Material Features
  • Allows maintenance-free and long-life operation;
  • Suitable for high static and dynamic loads;
  • With low and smoothly coefficient of friction and without stick-slip effects;
  • Suitable for dirty, corrosion, impact load and edge loading;
  • The base material provided a good shock-absorbing capacity;
  • Can be used over a large temperature range;
  • Suitable for reciprocating, rotating and oscillating movement with start frequency
    and difficulty to form oil film occasions;
  • With low wear rate and long life service.

How It Works ?

When the mutual friction occurs between two non-lubricated surfaces, the two contacts with the uneven surface of the peak by the shear, stick-slip and plastic deformation giving rise to friction and wear. Conventional lubricants can significantly reduce these effects, however, the conventional lubricant will be more and more squeezed out of the contact area with increasing surface which formed the dry friction or boundary lubrication.

With SOBB bearings, the lubrication is effected by the sliding material itself, The solid lubricant is released from the friction material by micro-movement. This gives the sliding partners smooth surfaces with a firmly adhesive solid lubricant film, the solid lubricant film remains within the contact area even under heavy loads. The embedded solid lubricant plugs can be continuously provided to the friction surface to reduce friction resistance and wear, thus make the bearing can be worked under low wear rate and long-life service.

Typical Applications

The product is widely used in continuous casting rolling machine, mining machinery, shipping machinery, turbine, injection machinery, auto mould and so on.

  SOBB thrust bush, Split Type, SO#50SP2 copper with graphite  --- Metric Size  

SOBB thrust bush, SO#50SP2 copper with graphite plugs

SOBB-253325 | 25x33x50/5x25 mm   SOBB-303825 | 30x38x55/5x25 mm        
















































SOBB-0611  SOBB-0813  SOBB-1013  SOBB-1018  SOBB-1211  SOBB-1218  SOBB-1223  SOBB-1313  SOBB-1318  SOBB-1323  SOBB-1513  SOBB-1518  SOBB-1523  SOBB-1613  SOBB-1618  SOBB-1623  SOBB-1818  SOBB-1823  SOBB-2020  SOBB-2025  SOBB-2520  SOBB-2525  SOBB-3020  SOBB-3025  SOBB-3035  SOBB-3520  SOBB-3525  SOBB-3535  SOBB-4027  SOBB-4037  SOBB-4047  SOBB-5038  SOBB-5048  SOBB-5058  SOBB-6038  SOBB-6048  SOBB-6058  SOBB-6068  SOBB-7050  SOBB-7080  SOBB-8060  SOBB-8090