Radial pre-tightening method and pre-tightening ring of cylindrical roller bearing

Abstract

The invention relates to a method for radially pretightening a column roller bearing, and a pretightening ring. The pretightening ring (4) comprises two step-shaped outer diameters of a pretightening ring (6) with different diameters, a rollerway nest circle of the pretightening ring (7), and a concentric or non-concentric inner diameter of the pretightening ring in a cylindrical annular structure, wherein no baffle is arranged on either end of the non-concentric outer diameter of the pretightening ring and is cut in the thinnest wall area from the outer diameter of the pretightening ring (6) to the outer diameter of the pretightening ring in the direction of 45 angle, so that the pretightening ring (4) has certain adjusting room and flexibility. The rollerway nest circle of the pretightenng ring (7) pushes a roller to an outer rollaway nest and generates mutual extrusion to prevent a rolling body from sliding on the surface of the rollaway nest. By adopting the method and the pretightening ring, the roller of a column roller bearing can be effectively prevented from skidding on the rollaway nest, and early invalidation of the bearing due to the skid of the bearing can be further prevented, so that the effective service life of the column roller bearing under special working conditions can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of bearings, and in particular relates to a radial preloading method and a preloading ring of a cylindrical roller bearing. Background technique [0002] During the use of rolling bearings, a certain radial or axial load is usually required to generate sufficient friction between the rolling elements and the raceways to ensure that the rolling elements slide on the raceways and make the rolling bearings work normally; if this load is less than the minimum diameter When there is any value of axial or axial load, there will be a sliding phenomenon that is very unfavorable to the use of rolling bearings, resulting in abnormal damage or early aging of the bearings. [0003] In the practical application of rolling bearings, angular contact ball bearings, tapered roller bearings and other bearings with a certain contact angle are usually installed in pairs, and a certain axial load is applied to overcome the slidi...

AI Technical Summary

Problems solved by technology

However, the effect of these methods is not ideal, and the sliding phenomenon of the rolling elements cannot be effectively overcome. When the bearing is installed vertically, operates at high speed, and is subjected to impact loads, this is very unfavorable to cylindrical roller bearings.

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