emcomat 7 replacement parts

i am looking for sizes to forward/reverse gear train holder or bango to emcomat 7 lathe and all the parts that mate to it. including change gears. pages 9 and 10 in spare parts list that i have. got machine cheap and cant afford new parts so i will try to make my own but i dont have originals . so it is get sizes or engineer them from scratch. traced or hand drawn details with demensions would be a great help. my e mail is [email protected] .

I'm not an emco owner so please treat the following with some caution.

AFAIK, the gears are 1 mod with a 20 degree PA.

I believe the following gears were supplied as standard

30,40,60,90,120 ship (with the lathe as stock).

35, 45,50,55,65,70,80,95 and 100 were available as the "set of inch
change gears" but I believe these are no longer
available.

The metric change gear set includes the above plus a 75 tooth gear.

To cut all of these gears you will need to buy a significant number of cutters - make your own - all a significant expense.

I would suggest searching fleabay or the various forums first, Gear cutting is a slow laborious process (ask me how I know )

You don't yet have a profile. - so, where in the country/world are you?

There may be a club or an individual local to you who can assist.

regards

CB

live in USA , Gates NC. the main gears and parts are the gear train holder and mating parts. and all I have left is time it will be a good starting place

Hi Darrell,
Welcome to the forum
I presume Gates is a suberb of New York City, (NC!) Could you let us all know what you are intending to construct with this little lathe, most of these parts are available in the UK and I should think in the USA.

Bob

You may have more luck asking on the Emco Yahoo Usergroup they cover the Emcomat 7

As for finding the parts second hand I would not hold out much luck, had my slightly larger Emcomat8.6 for 20yrs and never saw a set of change gears.

Tony Griffiths' site says they can make most parts for these size Emcos but not likely to be cheap, scroll down to Emco.

Is it an imperial lead screw or metric?

J

Darrell, I just had a quick look through the photos on the usergroup and there is an album with a homemade quadrant for the 7 plus scans of the original parts drawings. I'm sure if you trawl through the posts there will be some text to go with the photos

Although having read your post again is it the tumbler reverse with the two nylon gear wheels on it that you want and not the change gear bango/quadrant? CB may have got us on the wrong trail.

J

Edited By JasonB on 08/09/2012 08:40:30

it is the tumbler reverse with all the mating parts. got this machine from a friend and these parts were misssing. spline belt was broken. cost $42 plus shiping if I went that route. made a double V belt pulley to replace that. cost $5 for V belts. pulleys from scrap. had to tear down switches to get all the speede because low would not lock in, just jog. mill head had a shift lever broken so i only had 2 speeds. tore it apart and found it in 3 parts in gob of grease. use my other 3 in one to make a new one. made it out on steel instead of pot metal. so so far its me 2 and machine 1. but i will get it eventually.

Unfortunately I don't have my 8.6 now so can't measure it for you as I think they were the same. There are some photos of the tumbler on the group and if you ask there hopefully someone can give you a few sizes to get you going.

J

Gates, North Carolina. just below Suffolk, Va... Playing around with lathe today and with change gears from my other lathe i got forward feed. i will have to make a bushing with key to drive both low and high feeds. dont want to keep change gears from other lathe in this machine so i will need to make gears too. as for reverse well thats another matter. got to figure out just how parts go together as i dont want to drill new holes in machine if i dont have to. i should be able to reverse engineer using the holes that emcomat used orginally

For Forward feed the lever is lifted and the spindle drives the nylon gear nearest the front of the machine which is always in mesh with the other nylon gear and the in turn drives the geartrain.

For reverse feed the lever goes down so the nylon gear at the rear engages with the spindle so is therefore going the opposite way to when forward was engaged and that drives the geartrain in theopposite direction.

There is also a neutral mid position, actually slightly above middle of the travel

You can make gears out of T6 aluminium, which is relatively easy to machine

Small ones can be made directly from bar, larger ones from 1/2 inch or so plate

T6 aluminium seems to be pretty strong, I repaired the backgear on my old Drummond with it and it's done some serious motor smoking work in the past

Things will go slowly at first, then speed up as you suss it out

gl

Edit

Most original cast iron change gears were made extremely well and capable of doing 24/7 type work for years

Buying gears for another make of lathe and figuring out how to refit them to your emco would save a huge amount of effort

Edited By Ady1 on 09/09/2012 08:54:23

just below what is pivot point for reverse lever is another hole (actully 3) , does anyone know what was mounted here. i want to know the diameter of and number of teeth on gears on lever also. position of holes or traced lever would be a great help. never used change gears to thread before alway had a gear box . lathe didnt have a chuck. just faceplate and collets.enjoying this but wish i could be making chips with it instead

You should be able to count the number of teeth from the photo. Also measure some of the gears you do have and the number of teeth on them that way you can work out what the tooth size is (probably MOD1 as already said) then you can make the gears as once you know profile and number of teeth that will give you the diameter.

Have you signed up for the user group yet, they will be the best people to tell you what went where. Its also got all the details of the spindle nose so you can machine up suitable backplates for some chucks.

J

Edited By JasonB on 09/09/2012 16:41:38

updated my profile so maybe someone will learn a little about me. thanks for the info

gates , north carolina. 3 miles from virgina line, near suffolk va. good ole USA. I might could find the parts but dont have the cash. all my goodies will have to be made or wait till my ship comes in. been waiting on that ship for almost 57 years now. i think it sunk. lol

"what user group are you refering to."

Look at my first post in this thread, click on the blue text that says "Emco User Group" and it will take you there.

J

Edited By JasonB on 27/09/2012 07:37:46

Edited By Gep Engler on 17/11/2012 00:31:02