Bearing axial movement

The most common arrangement of bearings is to install a set of axially positioned "same fixed bearings" at one end of the shaft, and a set of axially movable "swimming bearings" at the other end to prevent the shaft from being damaged due to thermal expansion and contraction. A stuck phenomenon occurs. The commonly used "swimming bearing" is a cylindrical roller bearing with no ribs in the inner ring or outer ring. At this time, the fit between the inner ring and the shaft or the fit between the outer ring and the housing hole can be an interference fit. Sometimes non-separable deep groove ball bearings or self-aligning roller bearings can also be used as floating bearings, but when installing, the inner ring and the shaft or the outer ring and the shell hole should choose a clearance fit to ensure that the inner ring or outer ring has Sufficient freedom of axial movement.