Bearing data

Dimension
standards
  • metric bearings: not standardized 
  • inch bearings: cones and cups dimensions of many inch bearings → AFBMA Standard 19 (ANSI B3.19)
    ANSI/ABMA Standard 19.2 has replaced the above standard, but does not include dimensions.
Tolerances

For additional
information
Tolerances
  • dimensional tolerances (except for width T): Normal
  • geometrical tolerances: P5
  • values for metric bearings: ISO 492 (table 1, table 2)
  • values for inch bearings: ANSI/ABMA Standard 19.2 (table 3)
Internal
clearance


For additional
information
Internal clearance
  • bearings are ready-to-mount units with an axial internal clearance adapted for the actual application
  • bearing components should be arranged in the prescribed order and may not be interchanged with components of another bearing
  • designations with suffix C followed by a three- or four-digit number expresses mean value of the axial internal clearance in μm
  • contact SKF for clearance variants 
Permissible
misalignment

If misalignment cannot be avoided, SKF recommends using TDI design bearings (face-to-face arrangement). For information, contact the SKF application engineering service.

Any misalignment increases bearing noise and reduces bearing service life.

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