Back-up roll bearing for straightening machine

Abstract

The invention discloses a back-up roll bearing for a straightening machine, and relates to the technical field of back-up roll bearings. The back-up roll bearing comprises an inner ring, an outer ring and a plurality of cylindrical rollers, the two end faces of the outer ring are uniformly provided with a plurality of first fixing holes, the inner sides of the two ends of the outer ring are provided with stepped grooves, and the two ends of the side surface of the inner ring are uniformly provided with a plurality of second fixing holes; and four circles of pin roller grooves which are the same in specification and direction and are evenly distributed in the axial direction and the radial direction are formed in the side surface of the inner ring, grooves matched with the side surfaces of the cylindrical rollers are formed in the inner surface of the inner ring, and the cylindrical rollers are clamped between the pin roller grooves and the grooves. The bottom surfaces of the cylindrical rollers are supported and limited through roller supporting structures, so that the axial force and friction of the cylindrical rollers are reduced, the problem of damage caused by excessive axial abrasion is solved, the sealing performance is good, outflow of a lubricant is reduced, internal abrasion of the back-up roll bearing is reduced, and the service life of the back-up roll bearing is prolonged.

Description

technical field [0001] The invention relates to the technical field of backing roll bearings, in particular to a backing roll bearing for straightening machines. Background technique [0002] The bearing is a component that fixes and reduces the friction coefficient of the load during the mechanical transmission process. Its main function is to support the mechanical rotating body to reduce the mechanical load friction coefficient of the equipment during the transmission process; the existing straightening machine generally uses It is a cylindrical roller bearing, which can withstand a large radial force, but the axial force it can withstand is small, which is also one of the reasons for excessive internal wear and damage. Although the existing straightening machine support roller The bearing adopts multiple rows of cylindrical rollers, but it still cannot meet the damage caused by the axial force brought by high-intensity work to the internal parts of the bearing. On the ot...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a back-up roller bearing for a straightening machine, which supports and limits the bottom surface of the cylindrical roller through the roller support structure, thereby reducing the axial force of the cylindrical roller And friction, which solves the problem of damage caused by excessive axial wear, and the invention has good sealing performance, reduces the outflow of lubricant, reduces the internal wear of backup roller bearings, and improves its service life

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