摘要:
A cage bar of at least one of pockets, the cage bar being on one side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward one side in an axial direction such that an end face of the cage bar on the other side in the axial direction is recessed toward the one side in the axial direction. Further, a cage bar of the at least one of the pockets, the cage bar being on the other side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward the other side in the axial direction such that an end face of the cage bar on the one side in the axial direction is recessed toward the other side in the axial direction.
摘要:
The invention relates to an axial cage (1) for cylindrical rolling elements, which consists substantially of a thin-walled annular disc (2) having a W-shaped profile cross-section, the individual profile limbs of which are formed by a radially inner rim (3) that is integrally molded on the inner edge of the annular disc (2), by a radially outer rim (4) that is integrally molded on the outer edge of the annular disc (2) and by a U-shaped bead (7) which is connected via straight profile sections (5, 6) to the rims (3, 4) and has the same radial extension as the rims (3, 4). A plurality of rectangular cage pockets (8) arranged at uniform distances apart from each other is worked out of the bead (7) and the adjoining straight sections (5, 6). Between said cage pockets there are pocket webs (9) that connect the rims (3, 4) to one another, wherein said pocket webs hold the cylindrical rolling elements (10) in the cage pockets (8) and guide same in the circumferential direction. According to the invention, the outer rim (4) of the axial cage (1) is designed in a crown cap-like overall shape, as a result of which in the region of each cage pocket (8) the rim (4) has a constriction (12) that extends axially into the cage pocket and is in supporting contact with an end face (11) of the rolling elements (10), and in the region of each pocket web (9) the rim has a section (13) corresponding to the outer diameter of the axial cage (1).
摘要:
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.
摘要:
The bearing cage has a first flange, a second flange, and a plurality of cage bars extending between the first flange and the second flange so as to form and define outer boundaries for a plurality of pockets. The first flange and the second flange are each bent inward toward the pocket and then extend parallel in a vertical direction, forming a contact surfaces. The contact surfaces are in contact at each end of the rollers arranged in the pocket. The contact surfaces of the bearing cage present a large contact area between the ends of the rollers and the ends of the pockets where there is a lubricant film. Also, the surface of the contact surfaces is smooth.
摘要:
In a step of forming a roller bearing cage (13) including a first roller stopper part (16a) provided on the radial inner side to prevent a roller from escaping to the radial inner side, and a second roller stopper part (17a) provided on the radial outer side to prevent the roller from escaping to the radial outer side, on wall surfaces (16b) and (17b) opposed to a pocket (20), respectively, each of the first and second roller stopper parts (16a) and (17a) is formed by a process only from the one radial side with a jig (60).
摘要:
A steel retainer (3), which retains needle rollers (2), is formed from a steel plate containing 0.15 to 1.10% by mass of carbon. After being formed, the steel plate is subjected to induction heat treatment which includes induction hardening and induction tempering. Such heat treatment can be carried out efficiently in a short period of time, using compact treatment facilities, even in small-lot production. The retainer (3) thus formed is sufficiently resistant to wear and surface damage, and is high in fatigue strength and fracture strength as a whole.
摘要:
A roller with cage assembly 11 comprises a plurality of crowned rollers 12 each including a column part 12a having a constant diameter and inclined parts 12b connected to both sides of the column part 12a and inclined to reduce the diameter gradually, and a cage 13 having a pair of ring parts 14 and 15, a plurality of pillar parts 16 connecting the pair of ring parts to each other, pockets 17 formed between the adjacent pillar parts 16 to house the rollers 12, and guiding surfaces 16d having a predetermined width in a radial direction on wall surfaces of the pillar parts 16 opposed to the column part 12a. Thus, when it is assumed that a length from an end face 12c of the roller 12 to the boundary part between the column part 12a and the inclined part 12b is Dp, and an axial shortest distance from the wall surface of the pocket 17 opposed to the end face 12c of the roller 12 to the guiding surface 16d is A, the relation between them satisfies that Dp
摘要:
A cage of a thrust roller bearing is formed of an annular plate material and has a plurality of pockets to house rollers on surface which intersect with a bearing rotation axis. A first roller contact part comprising a first roller stopper to prevent the roller from escaping upward and a first roller guide surface to guide a roller rotation on its processed surface, and a second roller contact part comprising a second roller stopper to prevent the roller from escaping downward and a second roller guide surface to guide the roller rotation on its processed surface are provided on a wall surface of the pocket opposed to an outer periphery of the roller. In addition, a non-contact part retreating from the roller contact part is provided.
摘要:
A rotary machine may include an inner component and a first group of cylindrical rollers disposed around the inner component. Each of the cylindrical rollers may have end-faces. The rotary machine may further include an outer component with a first cylindrical inner surface disposed against the cylindrical rollers. Additionally, the rotary machine may include a first bearing cage associated with the first group of cylindrical rollers. At least a portion of the first bearing cage may be disposed inside the first cylindrical inner surface, and the first bearing cage and the first cylindrical inner surface may be associated with one another in such a manner to maintain the first bearing cage substantially concentric to the first cylindrical inner surface. The rotary machine may also include a first axial stop configured to limit axial movement between the outer component and one or more of the cylindrical rollers. Additionally, the rotary machine may include a second axial stop configured to limit axial movement between one or more of the cylindrical rollers and a component of the rotary machine other than the outer component.
摘要:
A roller bearing in which a plurality of pockets (3) parallel to an axial center line are formed in an outer peripheral surface (2) of a ring-shaped cage (1). Rollers (5) are rotatably assembled in the pockets (3), and an annular piece (7, 7) having a shape bent in an inner diametrical direction with respect to the outer peripheral surface (2) is formed in a side surface of the cage (1). A concave portion (9, 9) continuously provided in a circumferential direction of the cage (1) is formed in any one of an inner side of the outer peripheral surface (2) in the cage (1), an inner side of the annular piece (7, 7) and an inner side of a corner portion (8, 8) where they intersect, or astride any one of the inner side of the outer peripheral surface (2), the inner side of the annular piece (7, 7) and the inner side of the corner portion (8, 8) where they intersect.