Patent application number | Description | Published |
20120149512 | TORQUE TRANSMISSION CHAIN AND TORQUE TRANSMISSION DEVICE - A torque transmission chain and torque transmission device of which the strength of links is increased by devising lock points that regulate the maximum relative rotation angle between the links are provided. Lock points that contact with pins and interpieces to regulate the maximum relative rotation angles are provided at four portions, that is, a front surface of a link front pillar portion, a rear surface of a link rear pillar portion and a front surface and rear surface of a link intermediate pillar portion. Each of allowable maximum relative rotation angles regulated by the lock points of a link outline portion is set so as to be smaller than each of allowable maximum relative rotation angles regulated by the lock points of the link intermediate pillar portion. | 06-14-2012 |
20130326880 | METHOD OF MANUFACTURING BEARING RING OF ROLLING BEARING - A method of manufacturing a bearing ring of a rolling bearing includes a process of forming a bearing ring material in which a raceway groove is formed, a process of performing form rolling so as to form surface textures in axially opposite end portions of the raceway groove, a heat treatment process, a grinding process, and a super-finishing process. | 12-12-2013 |
20140341492 | BALL BEARING - A cage holds a plurality of balls such that the balls are arranged at intervals in the circumferential direction. The cage is allowed to be in contact with an outer ring, and a portion of the outer ring, with which the cage is brought into contact, is only an inner periphery raceway groove. The cage is located so as to be apart from an inner ring. | 11-20-2014 |
20140369635 | TAPERED ROLLER BEARING AND POWER TRANSMISSION DEVICE USING TAPERED ROLLER BEARING - A tapered roller bearing includes: an inner ring; an outer ring provided on an outer peripheral surface of the inner ring via an annular space so as to be disposed on the same center line as the inner ring; a plurality of tapered rollers rollably disposed in the annular space; and a cage retaining the plurality of tapered rollers. The tapered roller bearing is configured such that: liquid lubricant flows through the annular space; and among the inner ring, the outer ring, the tapered rollers, and the cage, at least one rotating component configured to rotate at the time of bearing rotation is provided with a vaporization promotion mechanism configured to decrease a pressure of the lubricant at the time of bearing rotation so that the pressure of the lubricant reaches a saturation vapor pressure at which the lubricant changes from a liquid phase to a vapor phase. | 12-18-2014 |
20150063735 | ROLLING BEARING AND POWER TRANSMISSION DEVICE INCLUDING ROLLING BEARING - A rolling bearing includes an inner ring; an outer ring coaxially disposed around an outer peripheral surface of the inner ring with an annular space between the inner ring and the outer ring; a plurality of rolling elements rollably disposed in the annular space; a cage that retains the rolling elements; and a bubble generating mechanism that generates bubbles in liquid lubricant during bearing rotation, wherein the liquid lubricant flows through the annular space. | 03-05-2015 |
20150198202 | TAPERED ROLLER BEARING AND POWER TRANSMISSION DEVICE - A curvature radius of a large rib end face of an inner ring is set to a value larger than a distance R, and a curvature radius of a large end face of a tapered roller is set to a range of 80 to 100% relative to the distance R, where R represents a distance from a cone center of the tapered roller to a predetermined reference point that is separated from the cone center along an inner ring raceway surface. A center of a contact ellipse that is formed by contact between the large end face of the tapered roller and the large rib end face of the inner ring is located on an imaginary straight line passing through a center of curvature of the large end face of the tapered roller and a center of curvature of the large rib end face of the inner ring. | 07-16-2015 |
20150300410 | BEARING RING FOR ROLLER BEARING, ROLLER BEARING, AND POWER TRANSMISSION DEVICE - A bearing ring includes a raceway surface on which a roller of a roller bearing rolls, a rib portion end face that is provided on one side of the raceway surface in an axial direction and that faces a roller end face of the roller in which at least an outer circumferential side of the roller end face is a convex curved surface portion, and a recessed portion having a recessed shape provided in a corner between the raceway surface and the rib portion end face. The rib portion end face includes a contacting surface portion that the roller end face contacts, and a concave curved surface portion that is provided between the contacting surface portion and the recessed portion and that is smoothly continuous with the contacting surface portion. A curvature radius of the concave curved surface portion is greater than that of the convex curved surface portion. | 10-22-2015 |
20160040718 | TAPERED ROLLER BEARING - A tapered roller bearing includes: an inner ring; an outer ring; a plurality of tapered rollers having a roller large end face that is a convex curved surface; and an annular cage that holds the tapered rollers at intervals along a circumferential direction. The inner ring includes a large rib portion having a rib surface that is a concave curved surface and that contacts the roller large end face. Inequalities represented by R>Ri>Rr are satisfied, where Rr is a curvature radius of the roller large end face, Ri is a curvature radius of the rib surface in a longitudinal cross section of the inner ring, and R is a distance from a cone center to a center of a contact ellipse obtained by contact between the roller large end face and the rib surface. | 02-11-2016 |