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Brain stumper Idea
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Posted by: rr2004

04/12/2005, 05:17:34

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Here's a brain exercise for someone:
I am wanting to check the "invisible" lead on a grinding machine. In particular, I want to be sure that there isn't a lead on the seal journal of a shaft. The engineer before me instituted this: He tied a washer on both ends of a string and hung the string on the seal diameter of the journal. He then ran the spindle and watched to see if the string walked up that journal. The problem I have with this methodology is: a) your centers have to be perfectly aligned every time you check this AND b) I believe that centrifugal force will cause that string to walk up the shaft journal.
Anyone have any ideas?

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