1, the original clearance. Refers to the Slewing Ring Bearings prior to installation in the free stateclearance.
2, the assembly clearance. Refers to the bearing clearance after installation. Seat in thering with the journal or the amount of interference with the hole under the action of the assembly clearance is always smaller than the original clearance.
3, work clearance. Refers to the actual work of the bearing clearance. Work, inside and outside the ring bearing different heat state; in load, rings, rolling elements and further deformation of the housing bore; these will cause the installation clearance change. In some important occasions, to deal with these effects make quantitative analysis.
Affect the normal bearing clearance is an important factor in the work. Clearance size,bearing work hot when stuck. Clearance is too large, it will reduce the bearing accuracy,vibration caused by radial and axial movement, increasing the noise. Conducive to a reasonable clearance between the rolling element load distribution. Therefore, clearancemeasurement and adjustment of the bearing installation work is an important element.
Adjustable clearance type of Automotive Bearing, the design of the support structure are set to adjust the links. Be measured in the installation and control. Common structure has the followingcategories:
1,with a gasket to adjust
Tighten the bearing cap at one end, other end into the Linear Motion Bearing cover gasket is not the first,evenly tighten the screws. When the shaft was not free to rotate, the description is no longer an internal shaft clearance. Measure with a feeler gauge face of the cover and the bearing clearance. If the inconvenience measurements can also be placed in advance in asoft surface between the ends of lead (such as electrical fuse in), cover after tightening the screw will be truly crushed by the gap size to it, and then remove the measurement of its thickness, can be obtained the gap value. This value with the required axial gap value, we should be placed in the bearing cap gasket thickness. Assembly site should be equipped with different thickness of the gasket, it is made of soft steel or copper, should be smooth, without burrs. Necessary to Diego to the required thickness, load cover, re-tighten thescrews, be expected that the axial clearance. The use of a soft gasket, you shouldconsider prior deformation may occur in the total thickness.
2, with the shaft through the inner adjusting nut.
3, with a seat on the threaded hole through the outer ring to adjust.
4, with the spacing sleeve adjustment.
5, with adjustment washers to adjust.
