| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing device capable of semipermanently keeping the force generated in accompany with the relative motion of a plurality of raceway members, such as rotating torque, at a low level. SOLUTION: An outer ring 1 and an inner ring as the raceway members are magnetized in the direction orthogonal to a rolling raceway of rollers 3, and the rollers 3 mounted in the raceway are also magnetized in the direction of a central axis. The outer ring 1 and the inner ring 2 are concentrically mounted while aligning the direction of the magnetized magnetic field, and the rollers 3 are assembled in a state that the direction of the magnetic fields are aligned to the direction of the magnetic fields of the outer ring 1 and the inner ring 2. By applying this constitution, as the the same magnetic poles of the inner and outer rings (raceway member) and the rollers 3 are arranged in adjacent to each other, the repulsive force by magnetic force is generated among these components, and the torque of the bearing can be reduced. Further in this friction reducing method, the effect can be semipermanently kept without impairing of the performance caused by abrasion of the rollers 3 and flange parts 1a, 1b. COPYRIGHT: (C)2005,JPO&NCIPI
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