06-26-2015, 08:12 AM
(06-25-2015, 06:15 PM)EdK Wrote: Mike,
Do you happen to have the brand and part number for the cylinder you used? I'd like to get one so I have it when my mill arrives.
Thanks,
Ed
Ed, sorry, no part number. I found them on ebay and bought a lot of 2 that had a 1" stroke, double acting (no internal return spring), 1/8" NPT ports and 3/8-24 thread at the rod end. I believe McMaster Carr may have them in their catalog but I cannot confirm.
(06-25-2015, 09:13 PM)PixMan Wrote: I've been at this about 38 years now and haven't yet broken nor stripped threads on any drawbar or collet. Either I'm just lucky or the drawbars are of a better quality material and manufacture. Probably a bit of both. All the "turret mills" I've run were either a genuine Bridgeport or two different Alliant (Taiwan) machines with OE drawbars.
I bought a Dorian for the Alliant I have now because it didn't come with one, and later got a spare from a local Craigslist seller. I would build a power drawbar if I had no other priorities in shop equipment repair/upgrades. Right now I have to take apart my cheapo Chinese hardness tester to see why it won't calibrate, get my Black Diamond drill grinder "calibrated", make a new 50T gear for my lathe, and two more index plates for my dividing head.
Other things are getting in the way of all of that, so I'm going to do the right thing and take off on my bike in the morning and forget about everything.
I agree Ken, I have been using an import (Chinese) BP clone at work for many years and have not had an issue with the drawbar. We did replace it with a quality one upon first getting the mill though but I cannot remember what brand it is.
After the week I have had I am ready to get on my bike this weekend and take off as well. We have had our annual safety audit this week at work and being the maintenance manager I have been neck deep in it. My nerves are about shot and the wife and I are hopping on the bike tomorrow and taking off somewhere, don't know nor care where. Just get away for the weekend.
Mike.