Bridgeport Z axis shaft disassembly

Oct 14, 2008 6 Replies

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I bought a Z axis power feed. Its installation manual calls for removal of the part of the original mill shaft that I circled on the first picture. (the manual is not written in the best English and it is not easy to understand, so I may be misunderstanding it).



The part is shown on page 70 if the bridgeport manual on my page above. It is called a "dial holder", item number 88 on the diagram.



Has anyone tried disassembling this shaft and how is this dial holder attached? Do I need to press it out, or what? I would hate to break the mill, etc.


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Closer pictures would help. Though the manual doesn't seem to show it, I notice a hole on the side of that part that makes me think there might be a tapered pin or roll pin securing it.

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What, where and how much? I'd LOVE to have one!

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As it turns out, it was threaded on. The hole is blind.

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$220 on ebay. I cannot yet recommend it, as such, as I have not installed it. It is called "ALSGS Z axis power feed" and thre are some previous threads on practical machinist discussing it.

I got most everything to work, nicely, except that I lost the 3mm shaft key, no big deal.

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