I had a guy give me a milling machine. The brand is a Duff it's an American made mill and it's a Bridgeport type machine. I'm needing a set of Collets. I have one for it and it is made by Duff it is not a regullar R-8 type collet though. I'm figuring Duff made the collets just for a Duff mill. I've checked several places for them with no luck. I start machine shop school in September and thinking about just making a set. Any sugestions on where I could get a set, and any info on Duff mills?
Try Travers.com ,Enco,KBC,etc. There are a few different styles of collets,R8 are the most popular. If you are lucky,it is a readily available type.
I've been running milling machines for lots of years, never heard of a Duff. But that doesn't mean anything. Did you get a manual with it?? If you didn't and there's an address or P.N. anywhere on the machine give them a call. They can send you one. It should tell you what kind of collets this machine takes. Head off to Ebay. Happy 'chinin'
Google "Duff Vertical milling machine".... a couple of hits: "If anyone needs info on the 30 j vertical milling machine i have located a manual and sales booklet i got these from Mr Duff himself from his ba*****t he built these machine in 1950s iam also looking for a D5 collet any size to 5/8" thanks" "I would be very interested in any information regarding the Duff mill. I have found very little information on these machines. I am not sure what model my machine is. It takes no. 2 morse collets. " "it took along time to obtain a book on the 1957 model (DUFF) machine and it acutally came from George Duff who is still alive and had a copy in his ba*****t he and his brother started the company in the 40S but he could not tell me where he obtained collets but did say there were over 2000 machines built with any luck someone has them again "
Some of the smaller mills have/had Morse Taper instead of R-8. If you have a MT 2 or 3 center or adapter available - without the tang on the rear - chalk one up with common blackboard white chalk and see how it fits. Just spin it lightly back and forth inside and you'l see an even 'wipe-off' of the chalk if it's the correct taper. (Could be an MT 4 as well.)
It is most likely the same as my old M head Bridgeport, they use Brown and sharpe collets, they are a little hard to find but you can still locate them, I have a few extra if you want to send me a pm with your address I can loan you one to make sure it fits.
If you can, post a picture of the collet and maybe throw some dimensions on it. That would help us identify it for you. Maybe Duff used an industry standard collet. I kinda doubt it's morse. On a morse holder, there's nothing to hold the tool in your mill besides the taper. So it could vibrate out of your machine if you're doing anything besides drilling or reaming.
Here's a pic of one - available at Grizzly - threaded for a draw bar. Catalog description http://www.grizzly.com/products/g9539 If Kennedy's mill is sizable, then I doubt if it used the MT taper, but it is something to keep in mind. There were a lot of different tapers in the older machines, some of them the commonly available stuff (R8 etc.) and some proprietary.
In my experience Index mills used morse taper while 1/2 horse Bridgeports used Brown and sharp not too much choice in any case. Very few manufacturers used any thing else.
My bad. I don't work with much older equipment and I had no idea that something like that existed. Every morse adapter I've seen either has the flat tang or nothing at all. I learned something today. Thanks
Take a look at this site for information on a lot of collet sizes. Go to the index page for a lot of other useful information. http://shopswarf.orcon.net.nz/collet.html Joe
Not a prob . . . I kinda had a "What the?" first time I saw one. On an older Taiwanese Mill-Drill fwiw. I have a couple MT 3 end mill holders for the headstock of my lathe and used them for milling with the lathe milling vise. No problems, but they were tang style. The drawbar model would have been an improvement, but not needed nowadays since I have one of the larger drill-mills and it does what I want. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Aside from all that, what I need now is an adapter for MT3 to 1 1/2" x 8 threads for my rotary table. So I can use a lathe chuck for holding material to be drilled on a circle. The adapter gizmo centers the chuck on the rotary table. I can make one, but it seems I saw one somewhere a while back for not much $$ and now can't find it. That's the trouble with machine tools, you can end up making beaucoup tools for the machines and never get anything accomplished although I'm probably going to have to take an afternoon off and make one myself....
Here is another good site worth checking out! http://www.practicalmachinist.com/cgi-bin/ubbcgi/ultimatebb.cgi
Hello: I have some spare parts for the Duff vertical milling machine. Have three D5 collets and three endmill holders. Plus I have a variable speed milling head. I also know the company who manufactured the collets originally for the Duff company. You can contact me at captain@sailpace.com
i am looking for info and manual for a duff 30 j I have owned for 18 years The head down feed stopped working I am looking for any and all info to help in the repair. Could I get a copy of the manual form you ? Thanks Billtcguy
Make some phone calls and find out who owns the rights to the name now. They have to provide you with a manual. Might cost you a few bucks for postage. I've done it with several old pieces of equipment. Only thing Bill Clinton ever did that was useful.
A quick search shows that there may be a few manuals copied on the net https://www.google.com/search?q=duf....0j69i57j0.11146j0j8&sourceid=chrome&ie=UTF-8 The first link has a lot of info http://www.lathes.co.uk/duff/
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