Bearing dimensions

The dimensions of bearings (bore, outer diameter, width) are internationally standardised.

The size of a bearing has to be known for its installation on a shaft and in a housing. This is determined by the dimensions of the outer geometry of the bearing and includes:
Bearing dimensions

  • Diameter of the bearing bore d
  • Outer diameter D
  • Nominal width B
  • Height of the bearing T
  • Edge reduction r

Comparison of the cross sections of thrust bearings (except diameter series 5) for various dimension series
Bearing dimensions

Comparison of the cross sections of radial bearings (except tapered roller bearings) for various dimension series
Bearing dimensions

The dimensions of snap ring grooves in the outer bearing rings are defined by ISO 464 and DIN 616. The snap rings are defined according to ISO 464 and DIN 5417
Bearing dimensions

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