Get recommended shaft and housing tolerance classes for rolling element bearings based on load conditions and application requirements. Calculates actual interference or clearance in µm per ISO 286.
Bearing & Application
Recommended Fit
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Why Proper Fit Matters
An incorrect bearing fit is one of the most common causes of premature bearing failure. Too loose and the inner ring creeps on the shaft, causing fretting corrosion. Too tight and internal clearance is reduced, increasing operating temperature and accelerating fatigue.
Fit Types
- Interference fit: Shaft is always larger than the bearing bore. Used for rotating inner rings under normal to heavy loads.
- Transition fit: May result in slight interference or slight clearance. Common for light loads or precision applications.
- Clearance fit: Shaft is always smaller than the bearing bore. Used for stationary inner rings or axially floating bearings.