| 摘要 |
A universal joint includes a pair of yokes each having a pair of yoke arms with bores therein. Projecting portions of a trunnion cross extend into the bores of the yoke arms, and a number of bearings are arranged between the projecting portions of the trunnion cross and bearing sleeves which are secured within the yoke arm bores. An elastic seal extends over the radially outward end of each bore relative to the joint axis of rotation so as to close the outward sides of the bores and cover end faces of the projecting portions of the trunnion cross. A supply of lubricant can be contained between each end face and seal to be directed toward the bearings during operation of the joint, as a result of pressure exerted on the lubricant supply by the seal.
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