Patent ID: 8882360
Filing Date: 2014-11-11
Classification: F01L,F16C

Abstract:
1. A conical roller bearing device comprising: a conical roller bearing that includes an inner ring that has an outer raceway surface on its outer peripheral surface, an outer ring that has an inner raceway surface on its inner peripheral surface, a retainer, and a plurality of conical rollers that are rollably arranged between the outer raceway surface of the inner ring and the inner raceway surface of the outer ring and that are respectively accommodated in pockets formed in the retainer; and a pressing mechanism including a hydraulic chamber and a hydraulic supply portion, wherein the hydraulic supply portion supplies a redetermined hydraulic pressure to the hydraulic chamber that presses the retainer in a direction to reduce gaps between the conical rollers and the outer raceway surface of the inner ring and gaps between the conical rollers and the inner raceway surface of the outer ring along center axes of the inner ring and outer ring to thereby apply a preload, wherein the hydraulic chamber is defined by a rib formed in the retainer so as to be positioned on a side of the inner ring and outer ring in an axial direction.