Abstract: A tapered roller bearing includes an inner ring, an outer ring, a plurality of tapered rollers, and an annular cage having a plurality of cage pockets. Each of the cage pockets has a retainer configured to permit displacement of the tapered roller in a direction with a component in a radial direction, and restrict detachment of the tapered roller to an outer side in the radial direction by bringing the retainer into contact with a part of an outer peripheral surface of the tapered roller. The cage pockets include a first cage pocket having a first retainer with which a permissible amount of the displacement is a first displacement amount, and a second cage pocket having a second retainer with which the permissible amount of the displacement is a second displacement amount smaller than the first displacement amount.

Abstract: A tapered roller bearing includes an inner ring, an outer ring, a plurality of tapered rollers, and an annular cage having a plurality of cage pockets. Each of the cage pockets has a retainer configured to permit displacement of the tapered roller in a direction with a component in a radial direction, and restrict detachment of the tapered roller to an outer side in the radial direction by bringing the retainer into contact with a part of an outer peripheral surface of the tapered roller. The cage pockets include a first cage pocket having a first retainer with which a permissible amount of the displacement is a first displacement amount, and a second cage pocket having a second retainer with which the permissible amount of the displacement is a second displacement amount smaller than the first displacement amount.

Abstract: A tapered roller bearing includes an inner ring, an outer ring, a plurality of tapered rollers, and an annular cage. The annular cage includes a small-diameter annular portion, a large-diameter annular portion, and a plurality of cage bars that couple the small-diameter annular portion and the large-diameter annular portion together. The cage bar has a first facing surface that faces the outer peripheral surface of the tapered roller that is housed. The first facing surface includes a large-diameter-side facing surface, a small-diameter-side facing surface arranged farther away from the outer peripheral surface of the tapered roller than the large-diameter-side facing surface, and an intermediate facing surface inclined gradually away from the outer peripheral surface of the tapered roller with increasing distance from the large-diameter-side facing surface to the small-diameter-side facing surface.

Abstract: A tapered roller bearing includes an inner ring, an outer ring, a plurality of tapered rollers, and an annular cage. The annular cage includes a small-diameter annular portion, a large-diameter annular portion, and a plurality of cage bars that couple the small-diameter annular portion and the large-diameter annular portion together. The cage bar has a first facing surface that faces the outer peripheral surface of the tapered roller that is housed. The first facing surface includes a large-diameter-side facing surface, a small-diameter-side facing surface arranged farther away from the outer peripheral surface of the tapered roller than the large-diameter-side facing surface, and an intermediate facing surface inclined gradually away from the outer peripheral surface of the tapered roller with increasing distance from the large-diameter-side facing surface to the small-diameter-side facing surface.

Abstract: A tapered cylinder portion, a radially extending portion, a cylindrical portion, a center backup portion, and a large diameter side curved portion are formed from an integral metallic plate.

Abstract: A rolling bearing includes rolling elements, an inner ring which includes a raceway surface on which the rolling elements roll on an outer circumference thereof, and an outer ring which includes a raceway surface on which the rolling elements roll and which receives a radial load and a load directed to one side of an axial direction from the rolling elements on an inner circumference thereof. A closure member for closing an inner circumferential side opening of the outer ring is formed integrally at an end portion of the outer ring which lies on the one side of the axial direction or the outer ring is fitted in a cylindrical portion of the closure member.

Abstract: A rolling bearing apparatus includes inner and outer rings in which a preload applying unit applies a preload to the outer ring. If a fluid pressure in a fluid supply passage is higher than a first set pressure, then fluid is supplied to a pressure chamber via a check valve, and if a pressure becomes lower than the first set pressure, then fluid is supplied from a hydraulic pump to the pressure chamber via the check valve. If the pressure becomes higher than a second set pressure, then the fluid is discharged from the pressure chamber via a relief valve, and if the pressure within the pressure chamber becomes higher than a third set pressure, which is higher than the first set pressure but is lower than the second set pressure, then the supply of fluid is stopped. Thus, the pressure within the pressure chamber is maintained between the first and second set pressures.

Abstract: A tapered cylinder portion, a radially extending portion, a cylindrical portion, a center backup portion, and a large diameter side curved portion are formed from an integral metallic plate.

Abstract: [Problem] To prevent the generation of wear associated with a relative positional offset between a closure member (a preload member) to which a fluid pressure such as an oil pressure is applied and an outer ring. [Means for Resolution] A rolling bearing is provided which comprises rolling elements 34, an inner ring 33 which includes a raceway surface on which the rolling elements 34 roll on an outer circumference thereof and an outer ring 32 which includes a raceway surface on which the rolling elements 34 roll and to which a load can be applied which is directed to one side of an axial direction from the rolling elements 34 on an inner circumference thereof, wherein a closure member 36 for closing an inner circumferential side opening of the outer ring 32 is formed integrally at an end portion of the outer ring 32 which lies on the one side of the axial direction.

Abstract: A tapered roller bearing for a pinion shaft according to the invention includes an inner ring that has an outer circumferential surface on which an inner ring raceway surface is formed and that is integrally fixed to a one-end-side of the pinion shaft, an outer ring that has an inner circumferential surface on which an outer ring raceway surface is formed and that is fixed to a housing, and a plurality of tapered rollers rollably interposed between both of the raceway surfaces. An annular oil reservoir groove for storing lubricating oil is formed in a distal end portion at the one-end-side in an axial direction of the inner circumferential surface by being recessed thereinto adjacent to the outer ring raceway surface.

Abstract: An angular contact ball bearing includes: an inner ring including a shoulder portion-side end surface; an outer ring which includes a counterbore-side smaller-diameter portion and a counterbore-side end surface disposed axially inwardly of the shoulder portion-side end surface of the inner ring; a plurality of balls arranged in a circular row between the outer ring and inner rings; a cage for holding the balls; and a cylindrical guide portion which is provided at and communicates with the counterbore-side smaller-diameter portion and guides a ball-cage assembly in which the balls and the cage are assembled together when the ball-cage assembly is inserted into the outer ring. When the ball-cage assembly is inserted into the outer ring disposed horizontally, the ball-cage assembly is supported by the counterbore-side smaller-diameter portion and is prevented from being inclined by the guide portion.

Abstract: When a fluid pressure in a fluid supply passage is higher than a first set pressure, a fluid in the fluid supply passage is supplied to a pressure chamber via a check valve, and when the pressure becomes lower than the first set pressure, the fluid is supplied from a hydraulic pump to the pressure chamber via the check valve. When the pressure becomes higher than a second set pressure, the fluid is discharged from the pressure chamber via a relief valve, and also when the pressure within the pressure chamber becomes higher than a third set pressure which is higher than the first set pressure but is lower than the second set pressure, the supply of the fluid is stopped. With this system, the pressure within the pressure chamber is maintained at a level between the first and second set pressures.