Patent ID: 9206848
Filing Date: 2015-12-08
Classification: F16C

Abstract:
1. A rolling bearing unit, comprising: an inner ring having a raceway surface on an outer circumference thereof; an inner ring spacer being in contact with an end face of the inner ring and rotated in conjunction with the inner ring; an outer ring having a raceway surface on an inner circumference thereof; a plurality of rolling elements interposed between the raceway surface of the inner ring and the raceway surface of the outer ring; and a retainer disposed between the inner ring and the outer ring and having a plurality of pockets for accommodating the rolling elements, wherein, a centrifugal force is used to supply a grease from the inner ring spacer toward the retainer, and a radial passage penetrating from an inner diameter side to an outer diameter side of the retainer is provided between an inner wall surface of each of the pockets and each of the rolling elements so as to use each of the radial passages as a grease reservoir as well as a grease passage for allowing the grease adhering to the respective rolling element to move toward the raceway surface of the outer ring.