| 摘要 |
PROBLEM TO BE SOLVED: To provide a tapered roller bearing which can make the best use of the skew preventing characteristic of a split roller type tapered roller bearing, and can reduce the sliding resistance when the differences of the rotational speed have been caused between small-diameter side rollers and large-diameter side rollers, and can suppress an increase in torque. SOLUTION: A plurality of tapered rollers 3A, 3B are arranged in the axial direction in the respective pockets 4a provided in a plurality of circumferential positions of a retainer 4. A plurality of the tapered rollers 3A, 3B arranged in the axial direction have respective conical surfaces having different diameters, and their outer peripheral surfaces nearly form a common imaginary circular cone surface. The small end surfaces 3Ab of the large-diameter side rollers 3A have a spherical shape, and come into point contact with the large end surfaces 3Ba of the small-diameter side rollers 3B on the respective axes of the rotation. Molybdenum disulfide base coating films are formed on the surfaces of the respective rollers 3A, 3B. This type of bearings can be applied to the pilot portion, etc. of a transmission. COPYRIGHT: (C)2008,JPO&INPIT
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