Bearing data

Boundary dimensions: ISO 15:2011

For additional
(→ Tolerances)

Values: ISO 492:2014 (table 1)
Radial internal

For additional
(→ Bearing internal clearance)
Normal, C3
Check availability of other clearance classes

Values: ISO 5753-1:2009 (table 2)
Values are valid for unmounted bearings under zero measuring load.
MisalignmentGuideline values
  • 18 series: ≈ 4 minutes of arc
  • 22, 23, 28, 29 and 30 series: ≈ 3 minutes of arc

The guideline values apply to non-locating bearings, provided the positions of the shaft and housing axes remain constant. Larger misalignment may be possible but may cause shorter bearing service life.

The permissible angular misalignment between the inner and outer rings depends on the size and internal design of the bearing, the radial internal clearance in operation and the forces and moments acting on the bearing. As a result, only approximate values are listed here. Any misalignment increases bearing noise and reduces bearing service life.

For additional information, contact the SKF application engineering service.

Axial displacement
Bearings having no flange on either the inner or outer ring, or only one integral flange on the inner or outer ring can accommodate axial displacement of the shaft relative to the housing within certain limits (→ product table). During operation, axial displacement occurs within the bearing and not between the bearing and shaft or housing bore. As a result, there is virtually no increase in friction.
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