Thread cutting on a Stnako 1A616

[ksor]

I'm trying to figure out how thread cutting is done on this lathe.

The change gears on the left side of the gearbox give me some problems - I think I miss some of them !

I only have 2 dobble gears and 1 bigger to connect them.

The 2 dobble gears have this stamped on the side:

M2 20-55

and

M2 25-36

and it's the number of teeth on each single gear ... what is the "M2" standing for ?

I have got some copies of some tables on how to set up for thread cutting and I can see
there is mentioned some teeth number that I don't have !

So my question is:
How many change gears is normaly delivered with the machine ?
Only the one set I have (M2 20-55 and M2 25-36) or ... ?

You can see some Pictures here - Google translation is avaiable to the right just
under the menu line:

http://kelds.weebly.com/gevindskaeligring.html

 

[radial1951]

I'm trying to figure out how thread cutting is done on this lathe.

The change gears on the left side of the gearbox give me some problems - I think I miss some of them !

I only have 2 dobble gears and 1 bigger to connect them.

The 2 dobble gears have this stamped on the side:

M2 20-55

and

M2 25-36

and it's the number of teeth on each single gear ... what is the "M2" standing for ?

I have got some copies of some tables on how to set up for thread cutting and I can see
there is mentioned some teeth number that I don't have !

So my question is:
How many change gears is normaly delivered with the machine ?
Only the one set I have (M2 20-55 and M2 25-36) or ... ?

You can see some Pictures here - Google translation is avaiable to the right just
under the menu line:

http://kelds.weebly.com/gevindskaeligring.html

*
Hi ksor,

The M2 probably refers to the gear tooth size, module 2. If this is correct, the whole depth of tooth will be close to 4.5mm. I had one of these lathes from new in 1975 until I sold it last year, a strong and very accurate machine. Somewhere in my study I have a copy of the manual which will have the list of gears which came with the lathe.

Give me a day or so, and hopefully I can find it and let you know.

Regards, RossG
radial1951
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