HUB FOR OLDHAM COUPLING AND OLDHAM COUPLING

摘要

PROBLEM TO BE SOLVED: To provide a hub for an Oldham coupling and an Oldham coupling, in which seizure caused by sliding can be suppressed and application of a lubricant can be made unnecessary for a long period of time.;SOLUTION: The hub for an Oldham coupling is configured in such a manner that metal hub bodies 13a are disposed at both sides of a metal spacer 14 on both surfaces of which a pair of grooves 15 are formed with phases shifted by 90 degrees from each other, and that projections 12 of the hub body 13a are fitted in the grooves 15 of the spacer 14. The projection 12 of the hub body 13a has a grease hole 24 formed to penetrate the projection for sealing grease as a lubricant. The grease hole 24 is provided on both side faces 12a of the projection 12 of the hub body 13a so as to oppose to an inner face 15a that forms the groove 15 of the spacer 14. The grease hole 24 is provided to be positioned on an inner circumference side of the projection 12 of the hub body 13a.;COPYRIGHT: (C)2013,JPO&INPIT