A bush is provided at its sliding surface with oil-supply groove portions. An area ratio of the oil-supply groove portions to the sliding surface of the journal shaft is set to 30 to 90%. A length L1 between the oil-supply groove portions in a circumferential direction and an inner diameter D of the bearing satisfy L1D/36. Even in a bearing device in which the journal shaft and the bush mutually rotate in a predetermined angle range or in which the journal shaft and the bush relatively and continuously rotate, the present invention can effectively be used while maintaining the existing sizes of the journal shaft and the bush, and it is possible to prevent partial break of oil film or shortage of oil film.

 
Web www.patentalert.com

< Sensor and rolling bearing apparatus with sensor

< Fluid bearings and vacuum chucks and methods for producing same

> Device for improving the lubrication of bearings, particularly in wind turbines

> King pin seal assembly

~ 00235