Patent application number | Description | Published |
20080232732 | Roller bearing and outer ring manufacturing method - A step portion is formed at an outer peripheral surface of an axially-central portion of an outer ring, and is smaller in diameter than outer peripheral surfaces of axial opposite end portions of the outer ring. The step portion is continuously formed over an entire periphery of the outer ring, and has a predetermined width over the entire periphery. The outer peripheral surface and inner peripheral surface of the outer ring are pressed radially inwardly, and therefore are bulged radially inwardly into a step-like shape to form the step portion having an axis coinciding with a axis of the outer ring. A pedestal of a cylinder block and a cap member retain the outer peripheral surface of the step portion, thereby positioning the outer ring in the axial direction and also preventing a movement of the outer ring in the axial direction. | 09-25-2008 |
20080240641 | Roller bearing - The clearance between the outer peripheral surface of an annular portion of a cage and the inner peripheral surface of each of rib portions of outer-ring split pieces is set to be smaller than the clearance between the radial end surface of a projection portion of the cage and the inner peripheral surface of each of body portions of the outer-ring split pieces. When a centrifugal force due to engine rotation acts upon the cage, the inner peripheral surface of each of the rib portions of the outer-ring split pieces touches the outer peripheral surface of the annular portion of the cage before the inner peripheral surface of each of the body portions of the outer-ring split pieces touches the radial end surface of the projection portion of the cage. Thus, the radial displacement of the cage can be prevented in good time. | 10-02-2008 |
20080310787 | Rolling bearing apparatus - A rolling bearing apparatus is provided that rotatably supports a cam shaft in a cylinder head of an engine. The rolling bearing apparatus includes a plurality of rolling elements; a cage that positions the rolling elements so as to be spaced at regular intervals from each other in a circumferential direction and that retains the rolling elements in a freely rotatable manner; a shell-type outer ring configured to receive the rolling elements and the cage and having a raceway surface of the rolling elements at an inner side thereof; and an outer ring fastening member formed of a material having almost the same thermal expansion coefficient as the shell-type outer ring and having a press-fit portion press-fitted to the shell-type outer ring. | 12-18-2008 |
20090028481 | Double row thrust roller bearing - A double row thrust roller bearing includes a pair of inner and outer cages arranged radially in two rows in separate coaxial relation, each cage including an annular inner peripheral wall, an annular outer peripheral wall, a plurality of pillar portions interconnecting the annular inner and outer peripheral walls at intervals in a circumferential direction thereof, and a plurality of pockets each formed between the adjacent pillar portions. Rollers are rotatably held and retained respectively in the pockets. The annular inner peripheral wall of the inner cage is guided by an annular flange formed at an inner peripheral edge of one race, and the annular inner peripheral wall of the outer cage is guided at an inner periphery thereof by the annular outer peripheral wall of the inner cage. | 01-29-2009 |
20090028482 | Split bearing - A split bearing which is divided in two is formed of a rolling bearing, and its outer ring is provided with ribs at both side parts thereof in an axial direction. An integrating mechanism is provided at a position within a range in the axial direction where this rib is formed. The integrating mechanism include a concave groove in an annular shape which is formed on a side surface of the rib, and a C-shaped ring is engaged with this concave groove, whereby upper and lower split outer ring pieces of the divided outer ring are integrated into a preassembled state. | 01-29-2009 |
20090087128 | Cage, production method for the cage, thrust roller bearing equipped with the cage - A cage includes a radially inward-side annular plate, a radially outward-side annular wall, a plurality of pillar portions, and pockets formed in the pillar portions. Rollers are rotatably retained in the pockets. An inner peripheral surface of the radially outward-side annular wall is formed so as to be oblique toward a radially outward direction. A radially outward-side end surface of each of the rollers has a spherical surface shape. | 04-02-2009 |
20090133528 | Shaft apparatus with bearing - The shaft apparatus comprising a shaft, blocks fitted to an outer surface of the shaft in an axial direction at predetermined intervals, and a roller bearing. The roller bearing includes an inner ring fitted and fixed to the outer surface of the shaft, an outer ring, and a plurality of rollers interposed between the inner and outer rings to roll. First and second control rings for controlling the movement of the outer ring in the axial direction of the shaft are disposed between the shaft and the outer ring. | 05-28-2009 |
20090137327 | Shaft apparatus with bearing - Blocks and inner rings of rolling bearings are arranged on the outer surface of a hollow shaft at predetermined intervals in the axial direction thereof. The outer surface of the hollow shaft is plastically deformed in its diameter enlarging direction so as to be press-fit to the inner surface of the blocks and inner surface of the inner rings of the rolling bearings. In this state, the blocks and inner rings of the rolling bearings are fixed to the outer surface of the hollow shaft. | 05-28-2009 |
20100296762 | BALANCER-SHAFT-SUPPORTING BEARING UNIT - A balancer-shaft-supporting bearing unit is structured in such a manner that a balancer shaft, on which a driven gear that meshes with a driving gear provided on a crankshaft of an internal combustion engine is provided, is rotatably supported by a shaft-supporting portion of a housing via a roller bearing. Between the balancer shaft and the housing, a load-receiving portion that has a receiving face that receives the balancer shaft when the balancer shaft is elastically deflected by an impact load applied to the driven gear is formed at at least one of positions that are close to respective axial end portions of the driven gear. | 11-25-2010 |
20110197702 | Shaft apparatus with bearing - A bearing apparatus for including a camshaft, a plurality of cam blocks disposed in an axial direction on the camshaft, a housing member including an arc concave portion, a cap member which is fixed to the housing and includes an arc concave portion, a roller bearing interposed between the arc concave portion of the housing member and the arc concave portion of the cap member so as to rotatably support the camshaft, and annular first and second control rings which are separately provided from the camshaft, and are press-fitted and fixed to an outer surface of the camshaft at opposite side portions of the roller bearing in the axial direction. Surfaces of the first and second rings that face each other are formed as slide surfaces, and the slide surfaces come in contact with opposite side surfaces of at least one of the housing member and the cap member to receive an axial load. | 08-18-2011 |
20130266252 | CONICAL ROLLER BEARING DEVICE - A conical roller bearing device includes: a conical roller bearing that includes an inner ring ( | 10-10-2013 |