The surface of the
bearing raceway shall be ground without waviness. When the surface roughness is > 0.2 μm, the bearing cannot fully exert its bearing capacity.
The bearing clearance of the directly supported bearing depends on the diameter tolerance of the shaft and the bore. .
The shaft, hole and company that are matched with the direct support bearing are also different from ordinary shafts and holes.
Fixed bearings and floating bearings, fixed bearings at both ends and floating bearings at both ends, they have different guiding functions. The axial fixing of the bearing ring is determined according to the bearing configuration.
One end fixed end one swimming support
Fixed bearings are only subjected to large axial forces and the fixed parts must also be determined from this. Fixed parts include: shoulders for shafts and holes, circlips, end caps for bearings, shaft end rings, nuts, spacers, etc.
The travel bearing is only subjected to very small axial forces caused by thermal expansion. Its axial positioning is only to avoid axial displacement of the bearing ring. In this case, a tight fit can be used to meet the requirements. When using non-separable bearings, only one ferrule is fixed and the other is only constrained by the rolling elements.
Fixed at both ends and swimming support at both ends
When the combination of the adjustable
bearing set and the floating bearing only bears the one-sided axial force, the bearing ring only needs to be fixed from one side.
The other bearing set corresponding thereto can withstand the axial force in the opposite direction. The positioning elements used to adjust the bearing are: bearing nut, ring nut, end cap and spacer sleeve. The axial positioning methods for the two ends of the swimming support are: the shoulder of the shaft and the hole, the end cover and the circlip sleeve.
