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Tailstock on my Delta lathe is slipping

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Forum topic by Rick M posted 03-07-2016 04:13 AM 479 views 0 times favorited 5 replies Add to Favorites Watch
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Rick M

7919 posts in 1844 days


03-07-2016 04:13 AM

Last fall I bought a Delta 46-111 which I repainted but hadn’t gotten around to using until today. Problem I’m having is the cam vibrates loose allowing the tailstock to slide backward on the bed and the workpiece comes loose. I took the tailstock apart and cleaned off all lubrication and cleaned all wax off the bed, it still happens. Any suggestions?

-- http://thewoodknack.blogspot.com/


5 replies so far

View JoeinGa's profile

JoeinGa

7482 posts in 1471 days


#1 posted 03-07-2016 04:21 AM

Maybe you fit a lockwasher to stop the slippage?

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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MrUnix

4226 posts in 1663 days


#2 posted 03-07-2016 08:44 AM

Rick… can you point to a parts diagram for that lathe that shows the tailstock you have… the manuals for the 46-111 over at the VintageMachinery all show a different one than what you have (standard wrench operated nut). Or, can you post a picture of the underside of the tailstock after removing it from the machine. If it’s like I think, you should have a nut on the bottom that will adjust the pressure exerted by the cam when in operation, and probably just needs to be adjusted. But without seeing it or without a parts diagram, that’s just a guess.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View Tennessee's profile

Tennessee

2410 posts in 1979 days


#3 posted 03-07-2016 12:18 PM

Looks a lot like a 46-541, or at least in the same series with the same basic tailstock.
The 46-541 book is over at Vintage Machinery, and it shows a flat plate with two nuts as a locking washer rather than the usual round disc most of us have.

If so, I’d say that the locking plate, (the plate that clamps to the underside of the bed when you lock the tailstock handle), is probably either a bit bent from the nuts being too tightened at one point, or it could be the nuts are too tight, and you are not able to lock it properly, and it pops loose. Lastly, if you find that the handle seems to “go home”, the nuts might be too loose, the plate is not grabbing properly, and the vibrations are allowing it to pop open. Inspect that underside plate and nuts. The problem has to be there.

-- Paul, Tennessee, http://www.tsunamiguitars.com

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Rick M

7919 posts in 1844 days


#4 posted 03-07-2016 02:16 PM



Looks a lot like a 46-541, or at least in the same series with the same basic tailstock.
The 46-541 book is over at Vintage Machinery, and it shows a flat plate with two nuts as a locking washer rather than the usual round disc most of us have.

If so, I d say that the locking plate, (the plate that clamps to the underside of the bed when you lock the tailstock handle), is probably either a bit bent from the nuts being too tightened at one point, or it could be the nuts are too tight, and you are not able to lock it properly, and it pops loose. Lastly, if you find that the handle seems to “go home”, the nuts might be too loose, the plate is not grabbing properly, and the vibrations are allowing it to pop open. Inspect that underside plate and nuts. The problem has to be there.

- Tennessee

Thanks for that pointer, yes, mine has the same cam lock as the 541. I can try loosening the nuts and see if that helps.

-- http://thewoodknack.blogspot.com/

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Rick M

7919 posts in 1844 days


#5 posted 03-07-2016 07:51 PM

Fixed. 1/2 turn on each nut to loosen the cam a bit and it is rock solid. The solution should have been obvious, guess I was too frustrated last night to see it. Thanks guys.

-- http://thewoodknack.blogspot.com/

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