Self-pretightening double-row tapered roller bearing

Abstract

The invention relates to a self-pretightening double-row tapered roller bearing which is mainly applied in the steel industry and is used on the roll of a rolling mill. The bearing comprises two single-race outer rings, an inner ring, precompression springs, a retainer and a roller. Eight to sixteen precompression springs are installed in grooves on the two end surfaces of each outer ring. The retainer, the roller and the inner ring form a double-row tapered inner assembly. The double-row tapered inner assembly and the single-race outer rings form a complete bearing. The inner ring is provided with an inclined key groove which is used to position a structure. The invention has the advantages that the axial loading requirement is well satisfied and the problems of uneasy clearance control, bearing inner ring creep, short service life and temperature rise are effectively solved.

Description

technical field [0001] The invention relates to a self-pretightening double-row tapered roller bearing mainly used in the iron and steel industry and used on rolling mill rolls. Background technique [0002] Traditional rolling mill bearings were originally double-row tapered roller bearings of normal structure, which bear axial loads. Due to the structural characteristics of the bearing, during the installation process of the bearing, the clearance after installation can only be adjusted by the operator based on experience, which is very difficult to control, and if it is too large or too small, the bearing will be damaged in advance. Contents of the invention [0003] In order to overcome the problems of difficult control of the clearance after the bearing is installed, creep of the inner ring of the bearing, low service life and high temperature, the invention provides a self-pretightening double-row tapered roller bearing. [0004] The technical solution of the presen...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems that the clearance of the bearing is not easy to control after the bearing is installed, the inner ring of the bearing creeps, the service life is low, and the temperature rises, the invention provides a self-pretightening double row tapered roller bearing

[0005] The beneficial effects of the present invention are: not only satisfying the axial load requirements well, but also effectively solving the problems of difficult control of the clearance, creeping of the inner ring of the bearing, low service life and high temperature

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