| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller device stably usable for a long period. SOLUTION: The roller device 10 includes a disk-shaped bearing case 20; a plurality of rollers 50 arranged on a concentric circle of a rotation center O of the bearing case 20 and rotatable in a direction y orthogonal to a rotating direction x of the bearing case 20; an arc support ring 60 into which the plurality of rollers 50 are inserted and which rotatably supports each of the plurality of rollers 50; and holding parts 21 formed in the bearing case 20 and holding portions 61 between the adjacent rollers 50 of the support ring 60 so as to extend outwardly in the radial direction between the adjacent rollers 50. The bearing case 20 is formed by combining a body 30 and cover 40 divided into a plurality of portions in the direction to which the rotation center O of the bearing case 20 is extended. A mating surface 24 of the body 30 and cover 40 is set to be a portion other than a portion 23 constituting the maximum diameter of the bearing case 20. COPYRIGHT: (C)2007,JPO&INPIT
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