| 摘要 |
A centering device provided with cleaning means for cleaning a movable centering rod, and for preventing infiltration of dirt. The cleaning means comprise at least one annularly-shaped scraping member provided with angularly spaced apart cross-cuts, which divide the scraping member into circular sections having inner scraping edges. The scraping member is locked against a conical shoulder in such a way as to be elastically yieldable, making the inner scraping edges of the sections adhere to the centering rod.
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