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Ml7 toolpost

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von dutch14/07/2021 10:23:22
43 forum posts

Hi there,does anyone know the dimensions of the base of the tool post stud on a ml7,as in the part that goes up into the topslide not the shaft or thread size.Im fitting a quick change toolpost and the stud is different,so am going to turn up a base to press into the bottom of topslide threaded to suit new stud,if anyone knows the diameter would save me having to take it apart and back together before I make it!

ega14/07/2021 12:33:55
2242 forum posts
186 photos

I have just measured the flange of a similar part at 0.8935" diameter. The flange is 0.220" thick.

I think these studs are a light press fit as standard but am doubtful about the idea of making it by "dead reckoning".

von dutch14/07/2021 13:48:26
43 forum posts

Ok chap,when you say similar part,it wasn't an ml7 toolpost stud then?,Ill probably take it apart and have a look just thought someone might no actual size.

Richard S214/07/2021 15:32:11
218 forum posts
129 photos

ML7 tool post base measurements of mine are 0.8735" x 0.192" thickness. The dowel pin is 0.081" diameter.

It is on a PCD of 0.3135" on mine, so nominally 5/16" (0.3125). The pin height is 0.2187" or about 5.5mm-

This is a 1949 model, the dowel pin size is wire/number size 46. Later Myfords may have different size pin.

And I've gone to the effort of providing an image-


Roderick Jenkins14/07/2021 15:37:32
2122 forum posts
582 photos

Not sure if this is relevant but on my S7 the hole in the QCTP is much larger than the stud in the topslide.

tp 1.jpg

The kit included a top hat washer

tool post washer.jpg

tp 3.jpg

This works very will, no movement of the QCTP when tightened down.



JasonB14/07/2021 15:46:27
21316 forum posts
2419 photos
1 articles
Posted by von dutch on 14/07/2021 10:23:22:

Im fitting a quick change toolpost and the stud is different,so am going to turn up a base to press into the bottom of topslide threaded to suit new stud,

If your new toolpost came with a 10mm stud then the 7/16" diameter to fit the Myford ends up quite thin after being tapped M10 so it's usual to make a complete new stud or buy one along these lines

von dutch14/07/2021 21:54:45
43 forum posts

Thank you people's for all your information very helpful that is why I come on here,I will either make my own or may order above part.Many thanks to "Richard S2" as well for dimensions and pic,mine also is a 1950 ml7.

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