Sliding bearing
AssigneeDaido Metal Company Ltd.
InventorsAkira Ono, Koichi Yamamoto, Hiroshi Yoshimi, Nobutaka Hiramatsu, Takayuki Shibayama
Life of this patent
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Abstract
Disclosed is a sliding bearing in which a heat emission property of the sliding bearing is improved without affecting the original function of an overlay layer. An overlay layer is formed on a higher load-side bearing half, and extends circumferentially from a central portion thereof toward each of opposite ends thereof. Any overlay layer is not formed on a lower load-side bearing half, so that a bearing alloy remains exposed to the surface of this bearing half.
Claims7
A sliding bearing wherein a load, applied to a bearing alloy surface adapted in a cylindrical shape, varies in a circumferential direction;
- wherein an overlay layer is formed on a portion of said bearing alloy surface to which a higher load is applied;
- wherein a thickness of said higher load-side overlay layer decreases gradually from the central portion thereof toward both circumferential outward directions;
- and
- wherein said higher load-side overlay layer is made of a resin material containing a solid lubricant and a resin binder.
A sliding bearing comprising a backing metal, a bearing alloy layer, and an overlay,
- said sliding bearing having a circular-cylindrical shape and defining a higher load-side central portion, a lower load-side portion and transition zones therebetween;
- said overlay layer having a thickness which is a maximum at said higher load-side and which gradually decreases toward said transition zones;
- and
- wherein said higher load-side overlay layer is made of a resin material containing a solid lubricant and a resin binder, and fine pits are formed on the surface of said overlay layer by a running-in.
A sliding bearing comprising a backing metal, a bearing alloy layer, and an overlay,
- said sliding bearing having a circular-cylindrical shape and defining a higher load-side central portion, a lower load-side portion and transition zones therebetween;
- said overlay layer having a thickness which is a maximum at said higher load-side and which gradually decreases toward said transition zones;
- wherein a region of formation of said higher load-side overlay layer extends circumferentially from the central portion toward each of the both circumferential directions in an angle range of 30 to 80 degrees so that said region includes a main load-supporting portion to which a highest load is supplied;
- and
- wherein said higher load-side overlay layer is made of a resin material containing a solid lubricant and a resin binder.
A sliding bearing comprising a backing metal, a bearing alloy layer, and an overlay,
- said sliding bearing having a circular-cylindrical shape and defining a higher load-side central portion, a lower load-side portion and transition zones therebetween;
- said overlay layer having a thickness which is a maximum at said higher load-side and which gradually decreases toward said transition zones;
- wherein a region of formation of said higher load-side overlay layer extends circumferentially from the central portion toward each of the both circumferential directions in an angle range of 30 to 80 degrees so that said region includes a main load-supporting portion to which a highest load is supplied;
- and
- wherein said higher load-side overlay layer is made of a resin material containing a solid lubricant and a resin binder, and fine pits are formed on the surface of said overlay layer by a running-in.
Dependencies are inferred from the claim text.