Input/fore bearing of automobile engine

Abstract

The invention provides an input / fore bearing of an automobile engine. The bearing comprises an inner ring, an outer ring and large-diameter steel balls arranged in the inner ring and the outer ring, and a cage is fixed by flat-end quilt rivets; and the surface of a ferrule raceway is modified, the surface of an inner raceway is carburized. The bearing is low in noise, good in rotary flexibility and strong in axial bearing ability. In the bearing of the invention, the steel balls with a bigger diameter are used so as to increase a load rating; a bigger coefficient of curvature is used so as to improve the axial bearing ability; and simultaneously, in order to solve the problem of insufficient ferrule strength caused by the reduction in effective wall thickness of the ferrule with the increase of the diameter of the steel balls, the surface of the ferrule raceway is modified. Due to novel structural design, the bearing ability of the bearing is greatly improved, all axial component forces applied by a transmission bevel wheel can be born, the noise of the bearing is reduced, and the rotary flexibility of the bearing is improved; and the fatigue life of the modified bearing is obviously prolonged, and design requirements are met.

Description

(1) Technical field [0001] The invention relates to the fields of bearing structure design and surface modification of bearing rings, in particular to engine bearing technology. (2) Background technology [0002] At present, the structural design and heat treatment of general deep groove ball bearings can no longer meet the requirements of high-power 4G9 engines. In the bench test, none of the domestically produced bearings passed the test. (3) Contents of the invention [0003] The purpose of the present invention is to provide an automobile engine input / front bearing with low bearing noise, good rotation flexibility and strong axial bearing capacity. [0004] The object of the present invention is achieved as follows: it includes an inner ring, an outer ring and steel balls with enlarged diameters arranged in the inner ring and the outer ring, and the cage is fixed by flat-headed fast rivets. [0005] The present invention also has some technical characteristics: [0...

AI Technical Summary

Problems solved by technology

[0002] At present, the structural design and heat treatment of general-purpose deep groove ball bearings can no longer meet the requirements of high-power 4G9 engines.

In the bench test, none of the domestically produced bearings passed the test

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