INTERCHANGEABLE BEARING FOR DRUM

摘要

PROBLEM TO BE SOLVED: To inexpensively provide an easily exchangeable bearing in a interchangeable roller bearing which is inserted into an attaching ring for a drum. SOLUTION: Rollers of a roller bearing 4 are barrel-like needle rollers 5 each having a large radius of curvature 11. A center point 15 of the radius of curvature 11 is arranged across a center line 16, that is, on the opposite side in a diameter direction. An inner ring 12 occupies a constant position which is preset to an outer radial surface 7. An outer ring 13 is press-fitted into a hole of an attaching ring 3 to a desired depth, while considering allowable error of the dimension and margin of bearing.