| 摘要 |
PROBLEM TO BE SOLVED: To eliminate sliding friction by respectively providing two concentric circular grooves on both sides of the disc-like member of an inner ring and the inner faces of disc-like members on both ends of an outer ring, arranging a plurality of rotary bodies at every row of the groove, and arranging a plurality of supporting rotary bodies in one row between rotary bodies of every adjoining two in the rotary bodies of four rows. SOLUTION: Every two concentric circular grooves of V-section 3-6 are provided on both sides of the central disc-like member 2 of an inner ring 1, and a plurality of spherical rotary bodies 11-14 are arranged in these grooves in the distance not contacted with each other. Every two concenric circular grooves 24-27 of V-section are provided on the inner faces of disc-like members 22, 23 on both ends of a cylindrical outer ring 21, and a plurality of spherical rotary bodies 31-34 are arranged in these grooves in the distance not contacted with each other. Further among the rotary bodies 11, 12 and 31, 32, and among 13, 14, and 33, 34, a plurality of spherical supporting rotary bodies 41, 42 are arranged. The rotary bodies are contacted with each other at totally eight points. Hence motion of the contact parts of the bearing is wholly rolling motion, sliding friction during rotation is eliminated so as to smoothly rotate, and hence the performance can be improved.
|
