60mm X 8tpi spindle thread on my lathe

Dabbler

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My old lathe (bought new from Taiwan) bought in the early 80s, has what appears to be a 60mm spindle thread. It is a perfect 8tpi, and I've heard it might be a Colchester clone.. It is a DF 1237, and I've posted the manual here...

Does anyone know more about these lathes and which Colchester model this is a clone of?
 
If it is truly 60mm then the thread would be 3mm Witch is so close to 8tpi that it looks good with a gauge but a 8tpi won't screw on.
 
That would be like 2 and 3/8" x 8 tpi right? 60 x .0394 = 2.364 , 3/8" = 0.375
 
Here is some reading on them http://www.lathes.co.uk/taiwan/ I haven't tracked down the factory. Dar Shen?? On spindle nose I made a mistake when I said it was a DIN 60, it's a DIN 800 type, 60mm. I'm getting old. Measurements line up. However the thread is an odd ball, 8tpi, probably for the North American market. http://www.lathes.co.uk/spindlenose/spindlenoses.pdf

When it comes to machinery, engineers like designing with round numbers, so it pays to check with a 3-way caliper. And work in the measurement system they were designed in. The numbers get much easier.
 
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