Heres a couple pictures. For some reason i was in a rush to play with it and didnt focus on fitting everything up the way i should have but it crushed some concrete.
Hmmmm i didnt plan on one that heavy i was going to use an round manhole cover 75-100lbsYou also need a 200lb flywheel...
After working on them for 32 yrs, you're headed in the right direction. If you want it to last I'd use AR(abrasion resistant) plate as it won't bend as easy. From your description of the larger one planned I'm guessing you've also worked around them. From what I can see I think the eccentric needs less stroke. The length and angle of the toggle board above the jaw seat will determine how much action you get at the bottom which is where most of the crushing is done. You probably already know all this, but bear in mind that the shorter the toggle is and the more angle it has, the more HP required and more stress on the frame and movable jaw. As for bearings it depends on how much $$$ you want to put in it. I'd use pillow blocks for the frame and one or two, depending on space availability, split sleeve bearings for the eccentric.
As for speed, it will crush better at low RPM. Even at 250 RPM the flywheel will need to be balanced good or it will probably break the eccentric shaft eventually. Even at that speed you don't want to be around when that happens!!! Up to a certain point the weight of the flywheel will determine how much horsepower you need.
Keep on posting pics, I'm intrigued w/ this!!!
I know i can get RCA for 6$ a ton so im not doing this to save money. Its just something im interested in building. Its going to make a nice winter project.Do a Google of jaw crushers. Your concept is pretty good but you’re in for a learning experience once you try to crush stone. Concrete is about 3000 psi but even soft stone is over 15000 psi. You'll need some serious steel and bearings. I used to own a quarry, trust me you’ll save a ton of money if you just buy the finished product.
Well, I'm not informed enough to even have an intelligent comment. But I was reading through the thread, and I was interested in the idea, but couldn't for the life of me, figure the "why" of this endeavor. Until this last quote, it was finally revealed! I can go along with that answer. I wouldn't personally, but it is a cool idea, and obviously, it is something you know a little(lot) about.I know i can get RCA for 6$ a ton so im not doing this to save money. Its just something im interested in building. Its going to make a nice winter project.
Mike: Any chance you could elaborate on the design and/or give some pictures or point to some pictures of the internals on the web?I built a rod penner to crush rock that worked real well , had 6 hardend steel 1in rods run on 2 3cyl crankshafts.
Check out this link. http://www.youtube.com/watch?v=zvkEn6oytV8&feature=relatedMike: Any chance you could elaborate on the design and/or give some pictures or point to some pictures of the internals on the web?
I am trying to build one small (maybe 6" x'12") but I have many unknowns just before I start. I am looking for someone to chat about these crushers. Specially if have an idea of the internal construction.
I wan to avoid the steep learning curve and listener to others that did it helps immensely.