October 6, 201213 yr I am currently in the middle of building a tooling press, which i will be posting in the projects area, and am in need of an "air over hydraulic" cylinder for it. 20 ton. I found harbor freight has this same thing in the form of a bottle jack but i would like something with a longer stroke,something in a 12-16 inch range for the stroke. Any help?? Thanks all -Hillbilly
October 6, 201213 yr Good Morning, One of our members in Nanaimo used an Air-brake pot from a truck to operate a lever and a clamp. Simple. Air causes tooling to sometimes not move evenly and then all of a sudden move, POOR FINGERS!!!! Coates tire machines are air over oil. If someone forgets to add the oil it becomes a widow-maker!! Neil
October 6, 201213 yr I use a air over hydraulic foot pump to power my hydraulic cylinders they are all high pressure though. Its made by OTC.
October 30, 201213 yr I am building a press also that uses the same air over hydraulic jack, a 20 ton. I found one on the ebay for 95.00. I ordered it and got it in a week.I am gathering together my steel ,, and will post a pic when its done. Scott
October 30, 201213 yr What are you trying accomplish with your press(es)? If it's forging seems to me AO and bottle jacks ain't gonna cut it......
October 30, 201213 yr A friend of mine in columbus , Ga has already build one. It does work well. 20 tons will move hot metal very easily. This is not a press made for production work , but for the " homeowner" it works well. For mashing chain , cable, and the likes , it makes some beautiful "damascus".For the lack of a better word , i will use damascus. You can take a piece of motorcycly chain , or a timing chain , fold it and start mashing it . He ended up with a beautiful piece about 3/16 x 1 1/4 x 7 inches long. There did not appear to be any pits, or holes that you could see. The way he did is was to flip on the lock that holds down the handle. Then all you have to do is open and close the valve at the bottom of the jack that lets the ram return back to the down position.Rapidly open and closing the bleeder valve will operate the ram fairly quick. His jack had the springs that would pull down the ram. I will post up some pics. Scott Sorry , this is the best pic i have now. I will post some better ones later. Scott
October 31, 201213 yr Sorry , this is the best pic i have now. I will post some better ones later. Scott I like that you thought about how to best move it around with the big handles and lifting eye. Phil
October 31, 201213 yr Thank you Phil . I am starting to feel a little older, and its funny how those things start to factor in when making something. Scott
November 4, 201213 yr I have made a mini forging press with a HF air jack. I have a video on you tube mini forging press it should come up. they work fine on smaller material like under 1 inch.
November 4, 201213 yr Author With mine I'm not looking to accomplish any forging with, hence the term "TOOLING press". Mine is going to be meant for seating bearings, custom holding clamps if i need, punching indentations, etc. when i go for the heat n beat method, i like my 8lb flat-faced one hand sledge. Moves metal quite fast n easily when you strike. -Hillbilly
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