with regards to the change gears would I be correct in believing they are module 1.5 with a 20 pitch.

Use the formula for calculating the MOD, using the (tooth count + 2) and diameter of the gear, to confirm, or otherwise, your belief.

Ive not seen MOD expressed in mm before, generally just a number eg 1, 1.5, 2, etc which once multiplied by pi will give the circular pitch in mm.

20pa would be most likely.

Divide the OD by number of teeth +2 to get the MOD

There is something odd, which frankly I haven't looked into so don't understand it, in that the two largest gears, I think it's the two largest, are stamped with a different number compared to the others. Unfortunately, they are on the machine and this morning is the coldest yet this winter! Brrrrr….

Sam,

Have you got the so-called manual that goes with the lathe? If not, then I have a copy of the original pink handbook stored on my computer complete with their version of English! It's no big deal to email it to you if you wish. I've also got a copy that Nick Farr sent me: this version being done by Warco (I presume) and is in better English and printing. I'm sure Nick won't mind me saying this.

I've also got photos, drawings, info, about some of the bits & pieces of the lathe – unlike Nick, I haven't got an album, so if you want something, ask, and if I've done it, then it's yours for the price of an email.

Cheers,

Peter G. Shaw

Pitch diameter = #teeth x mod in mm. So the units of mod are mm. Normally they aren't included as "mod" is assumed to be a metric system of gear definition, but I wanted to be clear since the OP said a 20 pitch. I am assuming that a pitch of 20 DP is not intended! Also it would have to have units of mm to give the circular pitch when multiplied by pi.

JB

DP would be in 1/inch in units as it is a number (no units) divided by a length (diameter, in inch units).

I suppose if one looks up the definition of DP (from a proper text), it will define the result of the calculation as the numerical DP, not including units. Same with metric gear MODs. They likely neither include units as they are derived specifically from mm or inches, so are specific to the particular system.

Hi Howard, the Warco 220 is an old lathe, I bought mine second hand way back in about 2005 and they were not in Warco's 2002 catalogue, so there's no guarantee that they will have any spares now for them, Sam could always ask of course.

Regards Nick.

Sam,

May I suggest that you use the private messaging system to send me your (or a suitable) email address. The reason is that I have, so far, turned up two photos which I believe are what you may be asking for, a word document I did some time ago on fine feed and a set of drawings which I did some years ago when I managed to break the triple pulley block on the finefeed mechanism. This drawing shows, I think, all the parts that you are asking for. It will have to be a pdf, unless you can read drawings from Design Cad Pro! Also, the measurements will be as I measured them, and I rather think that there is space for rationalisation, eg, a dimension of 4.06mm is probably meant to be 4.00mm. At least, if I was designing from scratch, I would be very unlikely to use such odd dimensions.

All in all, a lot of stuff to put on the ME/MEW forum – not for any reasons of secrecy, just the practicalities.

Cheers,

Peter G. Shaw

My computer auto translated this when I approved it this morning, for those that can't translate

"Good morning everyone, I'm a new member and I'm inexperienced on the subject. I'm self-taught. I have recently come into possession of a mashtroy lathe (warco 220) I'm trying to restore it, but I don't have an instruction booklet, I saw that there are some games in the brass nuts, and I don't know the pitch of the worm. Can anyone in the group help me? Information, drawings, etc. I would be very grateful, thank you"

Big worm or little worm (in italian)

Buon giorno a tutti, sto cercando la controtesta per tornio warco 220, qualcuno può suggerirmi dove si può trovare? Grazie

Buon giorno, potresti suggerire qualche sito d’acquisto. Grazie