bearing ring, cage and rolling elements are mounted directly on the shaft and an inner ring is not required. These are commonly referred to as water pump bearings since that is a major application for them. Specialbearings include Inch Series bearings, bearings made specifically for automotive air Values are valid for unmounted bearing sets under zero measuring load. Permissible misalignment: Single bearings ≈ 2 to 10 minutes of arc Misalignment increases bearing noise and reduces bearing service life, and when it exceeds the guideline values these effects become particularly noticeable.