Patent ID: 8007184
Filing Date: 2011-08-30
Classification: F16C

Abstract:
1. A self-aligning roller bearing with retainer comprising: an outer ring formed with a spherically concave surfaced outer raceway on an inner peripheral surface thereof; an inner ring formed with a pair of inner raceways so as to oppose the outer raceway on an outer peripheral surface thereof, a plurality of spherical rollers provided so as to be freely rotatable in two rows between the outer raceway and the inner raceways, and a retainer having column sections at a plurality of positions around the circumferential direction, and having a plurality of pockets for holding the respective spherical rollers between the column sections that are co-adjacent to each other in the circumferential direction such that they can rotate freely, and the position of the retainer in the radial direction is controlled by engagement of the inside surface of the pockets with the spherical rollers, wherein, in a state where a central axis of the retainer is matched to a central axis of the self-aligning roller bearing with retainer, in a case where the spherical rollers are positioned in the middle in the circumferential direction between the column sections that are co-adjacent to each other in the circumferential direction, if a shortest distance in the radial direction of the retainer between the rolling surface of the spherical rollers and the side surfaces in the circumferential direction of the column sections is taken as H in a case where the respective spherical rollers are maximally distant from the surface that opposes the end surfaces of the respective spherical rollers among the inside surfaces of the pockets, and if a shortest distance in the radial direction of the retainer from the opposing surfaces to the end surface is taken as H then H