A thrust angular contact ball bearing

Abstract

The invention relates to a thrust angular contact ball bearing, including a seat ring (1), a shaft ring (2) and a steel ball (3), which is characterized in that an annular raceway (4) is provided in the seat ring (1), the steel ball (3) is placed in the annular raceway (4) and can rolls in the annular raceway (4), the seat ring (1) also includes a clamp plate (5), the external side edge (51) of the clamp plate (5) is fixed with the seat ring seat ring (1), while the inside edge (52) of the clamp plate (5) constraints the shaft ring (2) in the seat ring (1) and is located at the upper part of the annular raceway (4), and simultaneously the shaft ring (2) contacts with the steel ball (3). The bearing ring limits the steel ball in the rollaway located above the seat ring by a shaft ring relatively-stationary to the seat ring, omits the spacing steel ball retainer structure in the traditional thrust angular contact ball bearing, therefore the bearing has a simpler overall structure, easierassembly; and the shaft ring makes the seat ring, the shaft ring and the steel ball constitute an integrated structure by spacing function of the clamp plate of the relative raceway of the seat ring,which facilitates the transportation and installation of ball bearing.

Description

technical field [0001] The present invention relates to a bearing, in particular to a thrust angular contact ball bearing which can be used to support a valve in an exhaust gas recirculation system. Background technique [0002] The exhaust gas recirculation (EGR) system of automobile engine is used to reduce the emission of nitrogen oxide (NOX) in the exhaust gas. The bearing used to support the valve in this system is a thrust angular contact ball bearing. This bearing does not rotate, only Withstand certain swings, control the opening and closing of the valves used in the exhaust gas recirculation system. Due to the high temperature of the application environment of the bearing in this system and the large load it bears, there are certain requirements for the rolling of the steel ball in the thrust angular contact bearing, that is to say, the smoother the rolling of the steel ball in the working state The better, there are two factors that affect the smooth rolling of st...

AI Technical Summary

Problems solved by technology

[0005] 1. The bearing has a cage, so the structure is complicated, the installation is inconvenient, and the production process is also relatively complicated

[0006] 2. The two components of the inner ring (shaft ring) and the outer ring (seat ring) are separated from each other. Since the two components of the shaft ring and the seat ring are not integrated, the shaft ring and the seat ring components are packaged separately, which brings certain difficulties to the packaging and installation. Difficulties

[0007] 3. Since the cage structure in the bearing is an open structure, the seal of the cage is not good, it is not easy to store grease, the grease is easy to leak from the cage, and the external impurities are easy to enter the cage, resulting in When the bearing is working, the friction is too large, resulting in overheating, which affects the service life of the bearing

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