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Forum topic by Weave posted 11-17-2012 01:47 PM 1419 views 0 times favorited 2 replies Add to Favorites Watch
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Weave

2 posts in 1484 days


11-17-2012 01:47 PM

I bought a re built J line Lathe, love it, I purchased a 1-8 RH/LH stronghold chuck and it wont fit the threaded shaft which mics at 1-1/16 inche, Any bright ideas for fixing it.

Weave

-- Dennis L. Weaver


2 replies so far

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Bluepine38

3341 posts in 2553 days


#1 posted 11-17-2012 08:08 PM

I know that Yates-American built some of the j line lathes, and one of the Yates american lathes I have seen
had a 1”8tpi on the bed side of the lathe and a 1-1/4”-8 tpi on the outboard side of the headstock. The
1-1/8” by 8 tpi and the 1-1/4” by 8 tpi (threads per inch) are standard b-7 threads. In standard b-7, all threads
above 1” are 8 threads per inch. Grizzly does stock adapters in the 1-1/4”x 8tpi, but I do not know of anyone
that stocks or handles the 1-1/8”by 8 tpi. If your headstock is an 8 thread per inch measurement, a machine
shop should be able to turn the shaft down to the 1”x8 tpi. You would have to take the shaft out of the
headstock to have this done. Call one or more machine shops in your area and ask if they can/will do this and
what the charge would be. If they and you agree on a price, be sure to take the chuck threaded sections
in with the shaft so that they can assure you of a proper fit. Hope this will help. If you do turn the shaft
down, then any original accessories will no longer fit on the shaft, so depending on the accessories you have,
you might want to find a shop that can rethread the chuck threads to fit the shaft.

-- As ever, Gus-the 77 yr young apprentice carpenter

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Weave

2 posts in 1484 days


#2 posted 11-17-2012 09:53 PM

I found this morning on the ourboard side is 1-8 to my surprise, the Stronghold fits, now if I want to work from that end I need to build a stand. the bed side the best I can tell gage is 1-1/16 -8

I appreciate you suggestion and will call machine shop next week, would like to use it on bed side.

Weave

-- Dennis L. Weaver

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