摘要:
A rolling bearing includes an inner ring, an outer ring, a plurality of rolling elements disposed between the inner ring and the outer ring, and a plurality of cage segments separating circumferentially adjacent ones of the plurality of rolling elements. Each of the cage segments has an axial bridge portion and side plates at axially opposite ends of the bridge portion, each of the side plates having a convex end and a concave end circumferentially spaced from the convex end. The convex end of a first one of the side plates contacts the concave end of a second one of the side plates.
摘要:
A split cage includes a plurality of cage segments each having a pair of rim portions and a pair of cage bar portions, the cage bar portions and the rim portions defining a single pocket that accommodates a single tapered roller. Turning of each of the cage segments is guided by the tapered roller, the cage segments being arranged in a circular pattern along the circumferential direction of the split cage, in an annular space between inner and outer rings. Each cage segment has projections formed so as to project radially inward from the pocket, and formed at the rim portions. A projecting length of each projection is set to such a length that the projection is brought into contact with an outer peripheral side portion of the inner ring before the cage segment is detached from the tapered roller when the cage segment is displaced to the radially inside.
摘要:
A rolling bearing including an inner ring, an outer ring and at least one row of angular contact rollers disposed between raceways provided on the rings, each roller comprising a rolling surface in contact with said raceways and two opposite end faces. The inner and outer rings having guiding faces coming into contact with the end faces of the rollers.
摘要:
A split cage includes a plurality of cage segments each having a pair of rim portions and a pair of cage bar portions, the cage bar portions and the rim portions defining a single pocket that accommodates a single tapered roller. Turning of each of the cage segments is guided by the tapered roller, the cage segments being arranged in a circular pattern along the circumferential direction of the split cage, in an annular space between inner and outer rings. Each cage segment has projections formed so as to project radially inward and formed at the rim portions. A projecting length of each projection is set to such a length that the projection is brought into contact with an outer peripheral side portion of the inner ring when the cage segment starts rotating.
摘要:
To provide a bearing structure in which the processing is easy, and the manufacturing cost can be reduced.A bearing structure 1 includes a housing comprising a first housing portion 13 having a cross-sectionally generally-semicircular concave portion and a second housing portion 14 having a cross-sectionally generally-semicircular concave portion forming together with the concave portion 13a of the first housing portion 13 a cross-sectionally generally-circular support hole 16, and a two-division rolling bearing 2 comprising a pair of two-division outer rings 3a, 3b mounted within the support hole 16 of the housing in closely-contacted relation thereto, a plurality of rolling elements 4 so mounted as to be able to roll on inner side surfaces of the two two-division outer rings 3a, 3b, and a pair of two-division cages 5a, 5b holding the rolling elements 4 such that the rolling elements are arranged at generally equal intervals in a circumferential direction, a shaft 12 being internally fitted to the two-division rolling bearing. A bore diameter of the support hole 16 in a direction of mating surfaces of the housing portions is made larger than its bore diameter in a direction shifted 90° from the direction of the mating surfaces.
摘要:
A retainer to be installed in a linear motion guide unit is disclosed which composed of embracing parts to hold a roller on diametrically opposite sides thereof, and connecting flanges joining the embracing parts together with one another. The embracing parts to hold the roller between them are each made with a first lip raised above any one side thereof, and a second lip raised above another side thereof. The first and second lips raised in opposite direction are placed in an offset or staggered relation with one another in lengthwise direction of the embracing part or in axial direction of the roller so as to be tough to suffer any distortion and/or damage on molding operation. The retainer can sustain ample lubricant near the lips. The embracing parts come into rolling-contact with the rolling surface of the roller while the connecting flanges come into sliding contact with axially opposite ends of the roller.
摘要:
A roller retainer 11 encloses an outer periphery of the roller 9 situated on a diagonal 20 when the roller 9 is viewed from the side surface thereof. Whether the rollers 9 are arranged in a parallel manner or in a cross manner, the roller retainer 11 is able to keep a constant position and thus the disposition of the roller retainer 11 is free from the influence of the direction the roller 9. Also, since the roller retainer 11 restricts a corner portion 9a of the roller 9, the roller 9 is difficult to slip off the roller retainer 11 and thus the roller 9 can be restricted positively, thereby being able to control the skew of the roller 9.
摘要:
In a roller retainer assembly, a roller retainer 15 is thinned to retain individual one of plural rollers 7 circulating in a roller circulation path inclusive of linear and curved races and to hold opposite side surfaces of the roller 7 and front and rear surfaces thereof in the roller moving direction. A combination of linear and curve guide portions 16a and 16b different in inclination angle and a combination of linear and curve guide portion 17a and 17b different in inclination angle are formed respectively in opposite end surfaces of the roller retainer 15 in a retainer moving direction. In a linear race, the linear guide portions 16a and 17a come into contact with adjacent roller retainers 15 respectively. In a curved race, the curve guide portions 16b and 17b come into contact with adjacent roller retainers 15 respectively.
摘要:
A bearing has rolling elements separated by floating spacer elements. Some of the floating spacer elements provide solid lubricant for lubricating the bearing. Other floating spacer elements may be non-lubricating. The lubricant-providing elements are alternated with the non-lubricating elements to maintain the alignment and spacing of the rolling elements, thereby promoting proper operation of the bearings throughout the life of the lubricant.
摘要:
A rolling-element bearing cage or cage element includes at least one axial bridge region having first and second guide surfaces, the first guide surface and the second guide surface each have a recessed region axially between first and second non-recessed regions, at least one V-shaped receiving space in a radial outer surface of the rolling-element bearing cage or cage element configured to receive lubricant, and first and second fluid channels extending from the at least one receiving space to the recessed regions of the first and second guide surfaces. The fluid channels have rectangular cross sections, are about as wide as a width of the recessed regions, and are angled at an acute angle to a radial direction, and the receiving space is approximately as wide as the recessed regions.