Nn ball & rollerreview

Bearing internal clearance is defined as the total distance through which one bearing ring can be moved relative to the other in the radial direction (radial internal clearance) or in the axial direction (axial internal clearance).

SKF spherical roller bearing clearance chart. The values are in accordance with ISO 5753-1:2009 (as far as standardized) and are valid for unmounted bearings under zero measuring load.

Nn ball & rollerparts

SKF spherical roller bearing have normal, C2, C3, C4, or C5 clearance classes. SKF bearings for vibratory applications: C4