Myford ML7 serial number query

[Neil GreenawayParticipant @neilgreenaway71611]

Hi All,

Just wondering if anybody here can cast light on something that I have never been able to get to the bottom of. I have a Myford ML7 and this was obtained by me through disposal of a business closure back in 2005. At the time I contacted Myford and the very helpful staff there in Nottingham advised me that lathe KSL108779C was obviously a long bed machine – they told me the date of manufacture (which I have now forgotten!!) however they were not able to advise what the C suffix denoted.

Can anybody cast light on the C suffix?

Many thanks,

Neil

[Neil GreenawayParticipant @neilgreenaway71611]

[KWILParticipant @kwil]

1972 but no idea about the C

[john kennedy 1Participant @johnkennedy1]

Are you sure its not a 'G' . I know they put another letter on when the bed has been reground ?

[KWILParticipant @kwil]

What is the thickness of the shears?

[pierre ehly 2Participant @pierreehly2]

Hi,

Look here @ usinages.com (french forum about chips making)

http://www.usinages.com/tours/mon-premier-tour-myford-t8648.html

My answer( p-mick) is just below the 2 top pictures and contain 2 files

S7 built-datas.xls & S7- belt-change.pdf

pm

[Neil GreenawayParticipant @neilgreenaway71611]

Hi There,

Kwil – the shears measure between 0.496 at the headstock end (front shear) to 0.498 at the tailstock (front shear). The rear shears appear to be about 0.002" less towards the headstock.

Pierre – The info you kindly supplied is for a super 7 – mine is only an ML7, but perhaps the C suffix was also applied to an ML7 bed design change – this appears to have been around 1972ish and if I remember correctly this timing seems about right for changes that I read about in Ian Bradleys Myford manual.

John – I have a photo of the serial no in my album of the front shear, headstock end where the no is stamped, and it definately looks more like a "C"

Many thanks,

Neil

[Neil GreenawayParticipant @neilgreenaway71611]

hi all, a quick look at the ian bradley myford manual has revealed that myford carried out a series of 4 design changes, a to d, with c suffix being a new bed casting. many thanks for all the help. i also found that an r suffix was used on regrinds.

[KWILParticipant @kwil]

Neil,

Glad you have got there. The nominal shear thickness was 0.500" so you now know the wear as well. The carriage guide is on the front shear so the width of this is also important.

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