Rolling bearing inner ring raceway and rolling bearing

Abstract

The invention provides a rolling bearing inner ring raceway and a rolling bearing. A dynamic lubrication texture is arranged in the central area of the raceway surface of a rolling bearing inner ring,and the dynamic lubrication texture is used for separating the raceway surface from the surface of a rolling body so as to avoid generating of dry friction; the side edge area of the raceway surfaceis provided with an oil storage texture, and the side edge area of the raceway surface is a symmetrical area on the two sides of the central area of the raceway surface and is used for forming a continuous oil film under high load; and an oil distribution texture is arranged on the raceway surface, partially overlapped with the dynamic lubrication texture and the oil storage texture and used for enabling lubrication oil to move in the moving direction of the rolling body. The running stability and lubrication condition can be jointly improved through the dynamic lubrication texture, the oil storage texture and the oil distribution texture.

Description

technical field [0001] The invention relates to the field of bearings, in particular to an inner raceway of a rolling bearing and a rolling bearing. Background technique [0002] Rolling bearings are important mechanical basic parts, and their technological performance often represents or restricts the development level of a country's machinery industry and other related industries. Abrasion or seizure of raceway contact surfaces due to insufficient lubrication of raceway surfaces and lack of abrasive particle capture mechanism is one of the main failure modes of rolling bearings. [0003] The Chinese patent discloses a high-life rolling bearing with a specific texture sequence on the surface of the raceway. A single uniform texture array is processed on the surface of the raceway, which effectively reduces the friction coefficient of the raceway surface and prolongs the life of the bearing. However, it does not take into account that different areas of the raceway face dif...

AI Technical Summary

Problems solved by technology

When impacted by alternating loads, its stable running track may jump, which increases the instability of rolling bearings

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