Pm1440GT one piece spindle bore dead center

Received a response from PM

Hi XXXXXXXXX,
I haven't heard of it either, but there it is. They should have provided a reducing sleeve so that you could use a smaller taper in the spindle. You could use that to determine the actual size and the amount of taper.

Not very encouraging when the manufacturer hasn't heard of it either.
 
Here is another longshot for the OP to buy a spare sleeve on eBay. I happened to know that the seller will accept an offer of $55.

www.ebay.com

Lathe Morse Taper Adapter Tail Stock and Dead Center - New | eBay

Find many great new & used options and get the best deals for Lathe Morse Taper Adapter Tail Stock and Dead Center - New at the best online prices at eBay! Free shipping for many products!
www.ebay.com
 
Lonewolfgun said:
Received a response from PM

Hi XXXXXXXXX,
I haven't heard of it either, but there it is. They should have provided a reducing sleeve so that you could use a smaller taper in the spindle. You could use that to determine the actual size and the amount of taper.

Not very encouraging when the manufacturer hasn't heard of it either.
Click to expand...

So there it is, then. I am in the exact same position as you, except with a Morse Taper 6 1/2 sleeve for my PM-1660TL lathe.

Having the sleeve on hand, it is entirely doable to take dimensions from that and make whatever you want. I bought round stock of C1018 (12” long, 3” diameter for $66) and 4140 (10” long, 4” diameter for $81) to make a couple of dead centers.

There are countless YouTube videos on how to do this. It does not look difficult. You use your existing sleeve to determine the change in radius over a known length. Then you use a dial indicator to cut that taper on your raw stock (definitely sneaking up on the angle!).

As long as you don’t overshoot the angle, you can even get away with cutting the diameter down too much. This is because you can part off the new dead center where the diameter is the same as the minimum diameter on your sleeve. The front will be cut to a 60° tip. I wonder if that would fit through the center hole in your chuck or a face plate. Mine won’t. Mine will have to have a reduced diameter tip to fit through my chucks & face plate.

You might want to either make one or obtain a spare sleeve now because if you do happen to misplace your sleeve, you will only be able to use a straight shank dead center in a chuck. It would also be considerably more difficult to re-cut the MT 5 1/2 taper without an existing taper on hand to copy.
 
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