Babbitt (White metal) coating

Babbitt coatings (White metal) on a tin basis are often applied for producing high-grade Babbitt coatings in bearing cups, guide tracks and other slide bearing applications.

Compared with conventional pouring of Babbitt, spraying those layers has a number of advantages:

  • The piece does not have to be galvanised, an optimum bond can be obtained on cast iron, steel and bronze.
  • Dovetail joints or special sectioning to obtain the right bond are not required.
  • The layer thickness can generally be limited to a minimum.
  • If thick layers are required, a buffer coating of aluminium bronze can be applied, which also serves as an emergency bearing surface.
  • Sprayed Babbitt layers have an extremely even structure, there is no chance of inclusions or shrinkage cavities, which produces a consistent high wear and pressure resistance.

Characteristics

  • Low friction coefficient
  • High wear and pressure resistance
  • Aluminium bronze coating as buffer coating for emergency bearing surface is possible

Applications

  • Bearing cups (slide bearings)
  • Guide tracks
 

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