A while back (2013) I went to an auction and scored a hydraulic power pack. They had about 50 of them, and I went through all and wrote down the lot #'s of the ones that were 3 phase 230 volt (most were 575, or single phase) hoping to score a few. Anyway, long story short, this was about the 5th or 6th one in and the first one on my list. I think I got it for around $20 or $30 (if I remember right?). Right after this one, the auctioneer had enough, and decided to speed things up and auction off the entire bunch as one lot, so I lucked out and the scrappers got the rest. As they did with all the steel, and almost all other lots of material I was interested in.
I bought it to make a belt grinder, or to repower my Excello mill. Whichever came first......Since I'm not one to rush into finishing projects, and my Mill was repowered via other means a while back (thanks Rauce) I figured I was safe to use it for a belt grinder now.....A few years ago I put the reservoir on casters cause it was a PITA to keep moving it around the shop. It was tucked in behind the Tormach, so a bit of sliding block puzzle game later I had it out. Now to find a 2hp single phase motor for a shop hydraulic supply.....Maybe in another 10 years......
Today I wanted to work on another (new) project, but this was taking up space on the welding bench so I decided to rewire it for 230v and take it for a test spin before I finish designing an entire machine around it. As hoped, it runs just fine, from 30hz, up to 90hz, silky smooth and quiet as a mouse. I did have to massage out a dent in the housing that was rubbing on the fan, but that was no problem. I also ended up just buying a wheel set from vevor to save some time on the build. I will have to make an 8" drive wheel (a yak shaving adventure worthy of another thread....) though to get the belt sfm up into an acceptable window from the low speed motor. A vfd can do the rest. I'm going to hold off on this for now until the wheels come in, as I want to finish the cad design 100% first before building. It's nice knowing the motor works fine after all these years though. Boy they flew by, seems like yesterday.......
The grinder is a Jeremy Shmidt inspired design I started years ago too. I've always liked his idea of being able to tilt the belt but being able to leave the table where it is. I started changing some other stuff I didn't like such as the tensioner, the pivot point, and the general pieced togetherness of it, but he adressed some of those issues in his gen 2. I have a couple other unique Ideas, and I also wanted to incorperate dust collection directly into the design as a feature, instead of it always being an afterthought on grinder plans. It's going to live primarily in the shop (no idea where yet) so I want to be able to contain the dust better than just a 5gallon bucket full of water, but I'll be able to wheel it outside when needed. I
had the perfect place for it carved out in my last iteration of the shop layout, but then I went and bought a surface grinder this spring, so.....I don't know where it's going to live now.......The base might have to get smaller than I'd like just to fit somewhere. Future Dan's problem......I hear he loves moving shit around.....