Press Brake Ram

admin

Where is a good place to find a 35-50 ton ram for a shop press? It can be either air/hydraulic or full hydraulic.Dynamic MetalworksMontrose, CODynMetalworks.com
Reply:I would get one of the twin cylinder OTC ones, they have a spring return and also have a hollow center so they can be removed from the press and be used to pull large bushings, shafts, gears, ect  with a large hardened all thread.I think the 50 ton is about $1200,  and you can get a 10000psi air over hyd. pump for about $300
Reply:grainger, OTC dealer, Ebay,
Reply:craiglist lots of people buy them and never use them ive seen some good deals there
Reply:Originally Posted by nevadanickI would get one of the twin cylinder OTC ones, they have a spring return and also have a hollow center so they can be removed from the press and be used to pull large bushings, shafts, gears, ect  with a large hardened all thread.I think the 50 ton is about $1200,  and you can get a 10000psi air over hyd. pump for about $300
Reply:Are you powering this with a porta-power type system (10,000 psi hydraulics) or a standard hydraulic pump (2000 - 4000 psi hydraulics)?
Reply:I do not have a power system yet, but planned on using a 2k-4k system. I would also use the system to run my tube bender.Dynamic MetalworksMontrose, CODynMetalworks.com
Reply:Your prolly lookin for a 6" bore 3500psi max pressure cylinder.  Or bigger.  My math says 6" bore at 3500psi will give you 49 1/2 tons.  Keep in mind that a lot of pumps don't like that high of pressure for long.  I been painting again though so my math could be wrong.  Better get a second opinion...My name's not Jim....
Reply:IF you know people and are good at welding/fabricating, you could maybe score one with a damaged butt end and shorten it for cheap.  Or one with a damaged bung and replace it.My name's not Jim....
Reply:A lot of the cheaper hydraulic presses have a bottle jack on a spring loaded beam and a large pin welded to the bottom of the beam. The next level up has the porta power type pump and cylinder and then from there they either use air or electric powered pumps that power a large porta power type ram.Sometimes on equipment like this if it is used for general purpose you may be better off just buying one from Northern tool or HF and modifying it if needed. Most guys you see build this type of equipment have a lot of the parts laying around already. Just pricing the steel sometimes makes it more than a store bought piece of equipment.I looked into building a engine hoist and engine stand and then priced the material, casters, etc and found HF or NT is so cheap that I could not even come close, especially if you put what your time is worth. If you have the time and the resources go for it.
Reply:the cylinders used on a press are almost always of the high pressure type (10k psi)a regular cylinder will require a larger volume of oil, wont be as strong, and will require a large tank, open center valve, pump, motor.Unless you have all the parts laying around and dont need a very strong press,  i would get a twin cylinder 50 ton OTC and an air over hyd. pump
Reply:I just gave a 100 ton cyl to the junk man. It came out of a injection molding press. No one wanted it local and i wasn't going to ship. It was all 2 guys could do to lift it. Prob 350 lbs...BobBob WrightSalem, Ohio  Birthplace of the Silver & Deming Drillhttp://groups.yahoo.com/group/southbend10k/http://groups.yahoo.com/group/sawking/1999 Miller MM185 w/ Miller 185 Spoolmate spoolgun
Reply:Originally Posted by BoostinjdmIF you know people and are good at welding/fabricating, you could maybe score one with a damaged butt end and shorten it for cheap.  Or one with a damaged bung and replace it.
Reply:my point on my last question, as long as you can find a used cylinder, that can handle the pressure, it's generally easier and cheaper to work with standard hydraulics.   It's cheap, and easy enough, to cut a welded cylinder down.   Then, cut the shaft, and add whatever end you need on it.   Welded cylinders are available, various equipment wrecking yards, or just off  various junked equipment.  Just be sure, whatever cylinders you are working on, has late-model, high-pressure seals, not the old low-pressure packings.
Reply:Originally Posted by jsfabmy point on my last question, as long as you can find a used cylinder, that can handle the pressure, it's generally easier and cheaper to work with standard hydraulics.   It's cheap, and easy enough, to cut a welded cylinder down.   Then, cut the shaft, and add whatever end you need on it.   Welded cylinders are available, various equipment wrecking yards, or just off  various junked equipment.  Just be sure, whatever cylinders you are working on, has late-model, high-pressure seals, not the old low-pressure packings.
Reply:Originally Posted by BryanDowdy Snip snip.... The press will be used every day and we plan on adding brakes, shear, punch, and notcher to it. Do you have any info on the 50 ton one from HF?  I wonder how well it would last??