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Jet Lathe Spindle

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Jet Lathe Spindle

#1

Jet Lathe Spindle

mikeee12345

I am modifying a Jet Lathe JWL1236 China made knock-off lathe.

The lathe has an external 1x8 thread on the spindle and the opposite

end of the spindle has an internal thread that goes in about an 1-1/2".

Does anyone know off hand what the thread pitch is on this internal thread?

This would be where you insert your knock-out rod to push out the spur drive.

I am wanting to install a 2-1/2 HP DC motor on the opposite end of the spindle

and direct mount the motor shaft to the internal thread of the spindle. This will

do away with all of the reeves drives and pulleys which are now getting harder

to source all of the parts from the supplier these days.

The reeves pulleys are made of poor quality die-cast materials these days and

last about a year under heavy use.

Re: Jet Lathe Spindle

#2

Re: Jet Lathe Spindle

William Duffield

It might be a smarter strategy to just buy a couple more of those lathes to canibalize for spare parts as needed. I've seen them on sale at Horror Freight for as little as $99. :)

When I had that model of Jet, I found it helped immensely to periodically take the cover off the head stock, blow the dust out of the split pulleys, and dry lube them. I would do this whenever I noticed less than full range of motion on the speed control (but you probably already do that).

Re: Jet Lathe Spindle

#3

Re: Jet Lathe Spindle

mikeee12345

I have a couple of the import lathes that I have turned 100's of items on.

I dismantled a treadmill I had not used in years and am modifying the lathe

to run off of a DC motor and an MC-60 controller which will provide variable speeds

without the reeves headaches. I am working on (2) designs I am finishing up a belt

drive model and plan to install a motor coupled to the end of the spindle shaft with a

spider insert type coupling on the other import lathe to test them for reliability.

There are thousands of these import Jet knock-off lathes and the weakest component

is the reeves drive system. A simple retrofit for these lathes could be a viable solution

for the owners of these machines.

I am also converting another lathe I have into a variable speed Ball Mill that will accommodate

different sized milling jars.

Re: Jet Lathe Spindle

#4

That treadmill motor conversion......

JamieDonaldson

...was a big thing about 10 yrs. ago. I salvaged a motor and controller but never used them, don't have any idea what I did with them? >(

Re: Jet Lathe Spindle

#5

Re: That treadmill motor conversion......

mikeee12345

A lot of the knife makers are using these motors to make variable speed

sanding belt machines for shaping and sharpening the knives they make.

Re: Jet Lathe Spindle

#6

Re: Jet Lathe Spindle

Dick Coers

Let us know how that treadmill motor conversion works out. I think you'll need a lot of pulley options if you want to rough out a bowl at low speeds. They are not known for lots of torque at low rpm. Should work fine for spindle turning, but apprehensive for bowl turning of much diameter.

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