Bearing raceway surfaces shall be grinding waviness. When the surface roughness of> 0.2μm, the bearing can not give full play to its carrying capacity. Direct bearing bearing bearing clearance depends on the diameter of the shaft and hole tolerances, matching directly supporting bearing axis, the hole also and Regular shaft, hole.
Fixed bearing and swimming bearings, fixed support at both ends and both ends of the swimming bearings, they have different guiding role. Bearing ring axially fixed bearing configuration, the following two forms:
One end fixed to one end of the swimming support.
The fixed bearing is exposed only to the large axial force, and must thus determine the fixed parts. The fixed components include: the shaft and bore shoulder, elastic ring bearing end cover, shaft retaining ring, nuts, isolation units. Swimming bearing is exposed only to a small axial force caused by thermal expansion. Its axial position only in order to avoid bearing ring of the axial displacement. In this case, a tight fit to meet the requirements. Use can not be separated bearing only one ferrule is fixed, while the other is only constrained by the rolling body.
Fixed at both ends and both ends of the swimming support.
When the adjustable bearing group and a combination of floating bearing is exposed only to the unilateral axial force, the bearing rings fixed only from one side. Their corresponding another bearing group can withstand the axial force in the opposite direction. Positioning adjusting bearing components including: bearing nut, ring nut, cover and isolation units. Both ends of the swimming bearing axial positioning, including: the shaft and the hole of the shoulder, end caps and elastic block trap.
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