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Tool Talk Discussion Forum

Hydralic press

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Vern Iowa

05-27-2004 19:13:44




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Would anyone have a diagram of a hy press in the 40-50 ton range. I sure wish I could find a press that was made by a rep C0 reasaonable. Is it cheaper to make your own or to buy a real good one?




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gayan lanka

06-18-2004 00:40:29




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 Re: Hydralic press in reply to Vern Iowa, 05-27-2004 19:13:44  
I want to learn about hydralic press.



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TomH

05-31-2004 17:28:39




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 Re: Hydralic press in reply to Vern Iowa, 05-27-2004 19:13:44  
This one looks pretty simple



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Wayne

05-28-2004 19:45:03




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 Re: Hydralic press in reply to Vern Iowa, 05-27-2004 19:13:44  
Hey Vern, I could send you a few pics and draw you up a pretty good diagram of the press we built a couple years back. Like one post said the material to built it would cost an arm and a leg right now and to do it like ours you'd have to have something capable of boring a 2" hole in a piece of 3/4 plate. If you can do the holes though you'd still come out far ahead of the cost of new one. We've got a 75 ton ram in it right now and it handles it no problem. The bed deflects a very very little bit with the full 75 tons, and that's something we're gonna remedy as soon as we get the time. It's not real often we use that much tonnage, but often enough to justify us having built the press. Even though it does deflect a little each end of the bed has two 2" diameter pins holding it so it isn't going anywhere. The only thing we screwed up is we had hoped it would handle our 100 ton ram, but the bed is just a little too light for that much tonnage with the span we've got. There are a couple of unique things about ours. First is the ram is mounted on a 1" thick plate that has a cam bearing recessed into each corner of it. There are two pieces of angle iron bolted to the top crosspiece on the frame that hold the plate to within about 1/16 of the actual crosspiece. This allows it to pick itself up and seat almost immediately as you start to press, yet when there is no pressure on it it allows you to move the ram easily to anywhere on the bed. We made it like this because we also made the press with an open throat to enable us to handle odd ball shaped pieces that we couldn't do otherwise. We haven't tried the full 75 tons in the throat, but it's handled everything else we've put it through with no problems. If your interested let me know and I'll send you a couple of pics and a diagram.

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Charles (in GA)

05-28-2004 13:50:03




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 Re: Hydralic press in reply to Vern Iowa, 05-27-2004 19:13:44  
The problem with making one is getting the steel (it too has skyrocketed like gasoline) and if you get some used or scrap, thats OK, but you want the bed to go up and down for different size things, so you either need holes in the frame for pins, or something to retain the bed and support the tonnage. Drilling 3/4 or so holes in the frame, perfectly square from one side to the other, evenly spaced, is not easy. You would have to do it in a huge drill press and have stands to support the work.

I bought a Dake 25 ton on Ebay in April. I got lucky, I paid less than $200 and then spent another $250 to drive the 1900 miles to go and pick it up. I saw one of these same press, highly modified (and probably useless for general work) sell for over $600 the other day.

I saw a real nice looking Dake 75 ton H frame just a couple of hundred miles away sell for about $1500 just a couple of weeks ago, someone got a bargain.

I really would not try to build one unless you have lots of time and money. They look real easy, but I suspect they are not nearly that easy.

Do a search on Ebay for *hydraulic press* (no stars) and look thru them. Several of the sellers have Ebay stores that they sell parts and pieces for presses, in addition to the whole thing.

Everyone at work wondered why I "needed" a press. I am starting to find uses for it, straightening metal that I otherwise could not, and other odd uses in the shop. Its nice to have it there when I need it.

Charles

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KX

05-28-2004 12:15:32




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 Re: Hydralic press in reply to Vern Iowa, 05-27-2004 19:13:44  
Vern, When you say reasonable, for a press that large, you could still be talking a lot of money. Noone is giving them away period. I have a old press that I bought at a farm sale in Kansas years ago that says 40 tons on the frame, it has a hyd hand pump and seperate ram that are both old and I doubt if they put that kind of force out anymore. I still have used it for bending big iron more than once. I bought a Harpor freight 20 ton for doing light things like pressing out bearings etc for 159 on sale, it is good for small things the big press is too clumbsy for but I wouldn't try anything big in it (it is made in chinese and has a hyd jack for a ram). If you find a good quality 50 ton press even at a auction you are going to pay pretty good. Of course making one like you said is an option but count your time as money too, you will spend there as well. I hope you can find one that fits your needs, try eBay to get at least a ball park target for prices.

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