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Myford Super 7 Mk1 Leadscrew help

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Piero Franchi27/07/2017 10:19:07
124 forum posts
60 photos

Hi Just

I am on the last legs of a full restoration on my Myford super 7 Mk1 (see my photos in my profile)

One of the last things I will be doing is fitting the leadscrew,

(I have a myford super 7 Mk1 with screw cutting gear box )

I have use of an other lathe (colchester bantam 1600) and was thinking of buying a acme all thread and machining the ends my self.

being a Mk1, the leadscrew does not go all the way through the gearbox.

so my question is, what is the thred, pitch etc ill need and where should/could I buy it from

Kind regards

JohnF27/07/2017 10:34:30
avatar
1243 forum posts
202 photos

Piers, try this link, not sure where you are but somwhere in my "stores" I have a Myford lead screw but for a much later machine than yours. Pm me if you cannot get fixed up with te link John

http://www.abssac.co.uk/p/Precision+Lead+Screws/ACME+Leadscrew/101/#.WXm0ErHTWhA

**LINK**

Also see this thread on this site

http://www.model-engineer.co.uk/forums/postings.asp?th=65338

Edited By JohnF on 27/07/2017 10:38:22

Edited By JohnF on 27/07/2017 10:40:59

John Haine27/07/2017 10:53:21
5563 forum posts
322 photos

Standard pitch for the Myford is 8 tpi. I think the diameter is 0.75". Acme thread form. I assume that you have not converted the machine to metric - if you have then you could improve on Myfrod's "metric" conversion by having a 3mm pitch leadscrew rather than 3.175.. mm!

Piero Franchi27/07/2017 16:00:36
124 forum posts
60 photos

No, not metric

most of the intended work is going to be imperial

John F I will pm you now

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