| 摘要 |
PROBLEM TO BE SOLVED: To improve sealing performance so as to prevent oozing outside of grease for lubrication of a bearing inside on a sealing plate inserted and installed in a ring engagement groove formed on an inner peripheral surface of an outer ring. SOLUTION: A sealing plate 1 is formed of a plastic material surface hardness of which is extremely low hardness and having resiliency an inclined biting surface 1d on which a ring edge part 2f formed on a boundary of an outside surface 2d of an engagement groove 2' and an inner peripheral surface 2a of an outer ring 2 continued from it bites is formed on an outside surface of an outer peripheral edge part of the sealing plate 1, the edge part 2f is made to bite on the biting surface 1d at the time of inserting the sealing plate 1 in the inside of the engagement groove 2' and installing it in it, and an inside surface of the outer peripheral edge part of the sealing plate 1 is adhered on the inside surface 2b of the engagement groove 2' in a surface contact state on the sealing plate 1 for a plastic made ring bearing devised to insert and install its outer peripheral edge part in the ring engagement groove 2' a cross-section shape of which is roughly U-shaped formed on both end parts of the inner peripheral surface 2a of the outer ring 2 and made of a bottom surface 2c and the outside surface 2d. |
