Patent ID: 6340244
Filing Date: 2002-01-22
Classification: F16C,G11B

Abstract:
A rolling bearing for a hard disk drive comprising:an inner ring; an outer ring; a plural number of rolling elements located between said inner ring and said outer ring; a cage supporting said plural number of rolling elements; a pair of sealing members fixed to both ends in an axial direction of one of said inner ring and said outer ring and disposed opposite to each other; and a sole lubricant consisting of lubricating oil directly injected into a to-be-sealed bearing space defined between said sealing members at the both ends in the axial direction, wherein the amount of the lubricating oil is in a range of 1 to 50% by volume of the to-be-sealed bearing space, in which an amount of said lubricating oil is preliminarily contained in said cage, and the amount is in a range of 10-40% by weight of said cage.