Sliding bearing
View Patent ↗A sliding bearing comprises a shaft hole for rotatably supporting a shaft that is inserted thereinto, an inner circumferential surface on which the shaft slides, and plural linearly oblique grooves. The grooves extend in a direction crossing a circumferential direction of the sliding bearing and are formed on the inner circumferential surface at intervals, and the grooves are provided with a lubricant. The oblique grooves have an oblique angle in a range of 10° to 60° with respect to a direction perpendicular to the circumferential direction and have a width B in a range of 0.5 to 5 mm in the circumferential direction. The adjacent grooves have a land with a surface as a sliding surface therebetween, and the sliding surface has a width A in a range of 1 to 7 mm in the circumferential direction. A ratio A/B of the width A of the sliding surface of the land to the width B of the groove is in a range of 0.5 to 5.0.
1. A sliding bearing comprising:
a shaft hole for rotatably supporting a shaft that is inserted thereinto;
an inner circumferential surface on which the shaft slides; and
plural linearly oblique grooves extending in a single direction crossing a circumferential direction of the sliding bearing and formed on the inner circumferential surface at intervals, the grooves being adapted to be provided with a lubricant,
wherein the oblique grooves have an oblique angle in a range of 10° to 40° with respect to a direction perpendicular to the circumferential direction and have a width B in a range of 0.5 to 5 mm in the circumferential direction,
wherein the adjacent grooves have a land with a surface as a sliding surface therebetween, and the sliding surface has a width A in a range of 1 to 7 mm in the circumferential direction, and a ratio A/B of the width A of the sliding surface of the land to the width B of the groove is in a range of 0.5 to 5.0.
2. The sliding bearing according to claim 1 , wherein the groove has a depth “d” in a range of 0.1 to 3 mm.
3. The sliding bearing according to claim 1 , wherein the bearing is made of a sintered alloy.
4. The sliding bearing according to claim 1 , wherein the sliding surface has a width A in a range of 2 to 5 mm in the circumferential direction.
5. The sliding bearing according to claim 1 , wherein the ratio A/B of the width A of the sliding surface of the land to the width B of the groove is in a range of 1.46 to 4.05.
6. The sliding bearing according to claim 1 , wherein the sliding bearing is used in surface pressure of at least 20 MPa.
7. The sliding bearing according to claim 1 , wherein the sliding bearing is included in a joint bearing of a construction machine.
8. The sliding bearing according to claim 7 , wherein the construction machine is one of a bulldozer and a power shovel.
9. The sliding bearing according to claim 1 , wherein the sliding bearing is included in a joint bearing of a robot for transferring articles.