OIL-AIR LUBRICATION TYPE ROLLING BEARING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an oil-air lubrication type rolling bearing device which reduces wind noise during high-speed rotation and enables oil-air to be reliably supplied to the inside of the bearing by simple configuration.;SOLUTION: A face 25 of a nozzle member 3 opposing to an inner ring is positioned outward in an axial direction than an end face of the inner ring, and the face 25 opposing to the inner roll is provided with an oil-air discharge port 23. An end-side tapered face 31 is formed as an oil-air receiving part on an outer circumferential face of the inner ring 12. A supply-side tapered face 32 having an inclination angle larger than the inclination angle of the end-side tapered face 31 is formed continuously with the axial direction inward of the end-side tapered face 31. The end position of the supply-side tapered face 32 is located inward in the axial direction than the end face position of a ball 13.;COPYRIGHT: (C)2012,JPO&INPIT