Radial insert ball bearings UK, spherical outer ring, location by adapter sleeve
In this series, the inner ring is located on the shaft by an adapter sleeve with a locknut and tab washer
The adapter sleeve and locknut give concentric, force locking location of the bearing inner ring on the shaft. As a result, the speeds that can be achieved are the same as with deep groove ball bearings. These bearings also give quieter running than normal radial insert ball bearings.