Clausing 100 mk3 lathe

[WEL0058]

Changing my Dads 12x36” lathe from standard to advance model. Need two items to complete.

1 - Need a 7/8” diameter lead screw for QCGB with later style apron.

2 - Need gear train cover for QCGB model

Bob Gausman
Madison, Va

 

[machPete99]

I am not familiar with the lathe but you might be able to make a lead screw from a length of an appropriate acme all-thread stock. One source is:

Green Bay Manufacturing

Chemistry - Responsive Muti-Purpose Portfolio Template

www.greenbaymfgco.com

 

[WEL0058]

Is ALL Acme thread rod the same or are there different grades?

 

[machPete99]

There may be different grades available. I think the better stuff is ground instead of rolled but I am not sure if that is available over the counter.

McMaster is another source, they list theirs as "thread class 2G":

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

I don't think Clausing used anything that special in their lead screws.

One other thing to think about... If the leadscrew needs a long keyway you might need access to a full sized milling machine (of better). I know my 5914 uses the keyway to drive the auto feed (leadscrew threads are only used for threading operations with the half nut).

 

[WEL0058]

Thank you for the help.

For the gear cover, thinking using 6" well casing for radius and go from there.

 

[WEL0058]

I found a lead screw from a Clausing 5904 and retro it