Shaft and housing fits
Shaft and housing fits can also have a significant influence on the internal clearance and the operating characteristics of polymer deep groove ball bearings. SKF recommends the following:
- Have approximately 20 μm interference fit for one ring only.
- Depending on the application, the interference fit can be on the shaft or in the housing. The ring with a rotating load should typically have an interference fit, and the one with a stationary load, a loose fit.
- Never subject both bearing rings to an interference fit as it preloads the bearing, causing it to fail prematurely.