ROLLER BEARING

PROBLEM TO BE SOLVED: To provide a roller bearing which can improve high speed rotation property by preventing high heat generation by promoting heat removal property. SOLUTION: The roller bearing 10 comprises: an outer ring 11 including an outer ring track 12 in inner circumferential surface; an inner ring 13 including an inner ring track 14 in the outer circumferential surface; a rolling body 15 arranged freely in rolling between the outer ring track 12 and the inner ring track 14; a retainer 16 securing the rolling body 15 freely in rolling; and a shielding plate 17 suppressing lubricating oil supply to a space between the retainer 16 and the outer ring 11 in one side of the axial end section of the outer ring 11. Furthermore, a side surface of the retainer 16 is adjacent to the shielding plate 17 with a slight clearance, and a shielding plate 17 side of the inner diameter surface of the retainer 16 is smaller in diameter than the opposite shielding plate side at least during rotation. COPYRIGHT: (C)2009,JPO&INPIT