Thrust roller bearing with races

Abstract

The invention achieves a thrust roller bearing structure with races that can increase the permissible level of eccentricity of a pair of members that rotate relative to each other as well as increase the amount of lubricating oil that is circulated therein, while securing the function of preventing the separation of a cage (3), a first thrust race (4a) and a second thrust race (5a). The external diameter of the external diameter side flange (8a) formed on the outer margin of a first thrust race (4a) is 60 mm - 120 mm, the internal diameter of the internal diameter side flange (11a) formed on the inner margin of an internal diameter side flange (5a) is 40 mm - 80 mm, and the internal space is 1 mm - 2 mm. Therefore, the external diameter side catch (9a) is formed intermittently in the circumferential direction on the leading edge of the external diameter side flange (8a).

Description

technical field [0001] The present invention relates to a thrust roller bearing (including a thrust needle roller bearing) with a race, which is mounted on a rotating support part in order to support a thrust load applied to the rotating support part in various rotating machines such as a transmission of an automobile. Background technique [0002] A thrust roller bearing as described in Japanese Patent Application Laid-Open No. 2005-164023 is mounted on the rotating support part of various rotating machines such as transmissions of automobiles, and supports the thrust roller bearing applied between the rotating parts such as the rotating shaft and the stationary parts such as the casing. Thrust load, while allowing the rotation of the rotating part. In addition, when a pair of members that rotate relative to such a thrust roller bearing is a material that is difficult to ensure the required hardness, or when it is difficult or troublesome to process the required smooth surf...

AI Technical Summary

Problems solved by technology

However, in the case of such a conventional structure, since the portion of the second thrust race portion close to the outer peripheral edge protrudes radially outward compared with the outer peripheral surface of the outer diameter side flange, the thrust roller with the race is formed. The opening on the outer diameter side of the inner space of the sub-bearing is largely clogged, so that the flow of lubricating oil is reduced, so the function of (2) is impaired.

[0023] As can be understood from the above description, in the case of the conventional structure, it is actually difficult to coexist the functions shown in (1) to (4) at a high level

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