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View Full Version : Bench or floorstanding hydraulic press??



Alistair Hosie
02-02-2015, 08:00 PM
I am thinking of making myself a nice hydraulic press not too big but hopefully powerful.I have a selection of good quality hydraulic jacks.However I have a device almost yearning to be converted to this use IMHO of course.It is a hydraulic brick paving bricks the interlocking type etc etc cutter the whole sheebang is waiting for a simple alteration IMHO again lol anyone know about these have alook and give me your expert opinion especially if you have ever made a press block cutter or not.Just a thought I feel this would be a good start? Alistair ps this is the same one I have


http://www.ebay.co.uk/itm/Fairport-hydraulic-block-brick-paving-slab-cutter-splitter-on-wheels-199-vat-/251742301650?pt=UK_BOI_Industrial_Tools_Constructi on_Tools_ET&hash=item3a9d02add2

LKeithR
02-02-2015, 09:40 PM
I think the question of floor vs. bench mount has more to do with work envelope than power. If you had a specific use you could make a 100 ton press with only a 6" x 6" capacity. On the other hand a 40-50 ton floor mount press has the potential to handle a wide variety of projects. It really depends on what you want to accomplish. To me it seems totally foolish to build a (relatively) high-tonnage press without a correspondingly sized work envelope...

mattthemuppet
02-02-2015, 10:43 PM
I have a 10ton Enerpac bench press which is really rather nice, but it can be a pain stacking stuff up on the base to raise the height to where the ram can reach. So, on one side it'll be more space efficient (but with a smaller work envelope), on the other side it won't be as easy to use. I'm totally happy with mine and I can deal with the occasional hassles using it, especially for the low price of nothing that I paid for it (well, technically a $35 seal kit and some hydraulic fluid).

darryl
02-02-2015, 11:03 PM
Exactly. When I finally went about building my press, it was because I needed to press some flanges onto a pipe of considerable length. I needed an envelope of about 5 ft, so I built it as a floor-standing unit which ends up being more than 6 ft tall. Width wise, I saw that I would need to press motor bearings, etc, so all I would need is about a foot. So that's what it is- and being that narrow it also fits into my limited space. At the same time the cross pieces can be less substantial and still handle the pressure. That meant I could use available materials in large part. I haven't regretted making it that narrow, and so far it hasn't been a limitation.

I did the math and worked out that I'd need to be able to place the platen at 5 inch intervals to cover the full range with the 6 ton jack I use in it. That's another issue- I selected the jack based on a compromise between required pressures and speed of actuation. I could have used a 20 ton jack, but then I'd have to crank it many more times to get the same length of stroke as with the 6 ton jack. That becomes tedious. I've reached the limit a couple of times, so it might have been prudent to use at least an 8 ton or maybe a 10- but that would be it. Again, that's for any use I'd be putting it to. Some of us need 10, 20, or more tons- I don't.

By the way, your image showed the upper section being triangulated. That eliminates a wide beam having to bear the pressure with acceptable flexing levels. You could give your platen beam a triangulated support and gain a rigidity from that so you could use lighter materials in its construction. This would limit the vertical capacity, but then it's up to you to decide on what envelope you need. Build it as a floor standing unit and you can use triangulation on both upper and lower points, and still have a decent vertical capacity- plus you can make it wider and still keep the flex down.

krutch
02-03-2015, 02:10 PM
Well if you have a bench press it takes up bench space. A floor model can be moved around with a two wheel dolly so it can be stored in a corner when not in use. The bench model will stay in the way. Just my $.02 opinion. It works well for me in my shop.

Mike Burch
02-03-2015, 03:55 PM
Too small a press is a real pain in the bum. Too big a press is just a minor irritation.
Mine comprises the 15-ton jack off my pipe bender in a frame of 75x50 RHS. It's fine for pressing bearings in hand-tools, etc, but for anything big, I simply can't use it - it's too small. On the other hand, it cost me next to nothing to make - the only things I had to buy in were the retracting springs.
So if you have the choice, go for floor standing, with as wide a frame as you have room for. (Triangulate as mentioned above.) And use the biggest jack you've got - it may take a few extra seconds to pump to the position where it's actually achieving something, but then it will be smoother and less effort to do the job.

astroracer
02-05-2015, 12:05 PM
A floor press is going to be much more versatile, as everyone has attested to. If you are limited on floor space put it on casters when you build/buy one. I did this with my 30 ton and store all of the press plates, the Swag Bender and dies on a shelf at the bottom of the press.
http://im1.shutterfly.com/media/47a4dd29b3127ccef5c51b44b66100000030O00BaNmrFmyYtQ e3nw0/cC/f%3D0/ls%3D00501231564020140308160517585.JPG/ps%3D50/r%3D0/rx%3D550/ry%3D400/

It rolls around with no issues and is out of the way when not being used.
http://im1.shutterfly.com/media/47a4dd29b3127ccef5c563b1379800000030O00BaNmrFmyYtQ e3nw0/cC/f%3D0/ls%3D00501231564020140308160524125.JPG/ps%3D50/r%3D0/rx%3D550/ry%3D400/

sarge41
02-05-2015, 12:44 PM
astroracer: Very neat arrangement. I am thinking about trying to come up with something similar for my 75 ton Wilson press. Quite a bit bigger, but may be doable. It would be great to be able to roll it out and use it and then easily put it away. Thanks for a good idea.

Sarge

Black_Moons
02-05-2015, 01:10 PM
If you do make a bench press, Try and make the bottom 'hollow' so that you could fit long shafts through it if you put it up on a bench with a hole in it. (or between two sawhorses or something), even if its normally mounted to a solid bench.

Trust me, some day you'll need to press a bearing/gear/something on/off a shaft or crankshaft and you'll need an extra foot of clearance below your press.

astroracer
02-05-2015, 01:36 PM
astroracer: Very neat arrangement. I am thinking about trying to come up with something similar for my 75 ton Wilson press. Quite a bit bigger, but may be doable. It would be great to be able to roll it out and use it and then easily put it away. Thanks for a good idea.

Sarge

Thanks, I like it. it is nice to have everything in one place. The Cman tool box was a 3 dollar deal at a yard sale, full of tools... That 75 ton is a monster! 5" casters will be a must. I would build the frame so it sits level to or below the centerline of the casters. Like I did here on this scrap metal cart I built.
http://im1.shutterfly.com/media/47a4dc34b3127ccef50ba4170dd200000030O00BaNmrFmyYtQ e3nw0/cC/f%3D0/ls%3D00501231564020140216011209193.JPG/ps%3D50/r%3D0/rx%3D550/ry%3D400/
Bend the caster mounting plate and weld it to the tube with a 45deg cut. Lowers the center of gravity a good bit.
http://im1.shutterfly.com/media/47a4dc04b3127ccef52742e6156e00000030O00BaNmrFmyYtQ e3nw0/cC/f%3D0/ls%3D00501231564020140225233158789.JPG/ps%3D50/r%3D0/rx%3D550/ry%3D400/

mattthemuppet
02-05-2015, 02:22 PM
I don't disagree with what everyone else has said, but I do really like my little Enerpac

http://i1349.photobucket.com/albums/p752/mattthemuppet/IMG_3333_zpse67330ae.jpg

it may become limiting in the future, but for now it's very handy and takes up little space. Pressed apart an old Jacobs drill chuck with it last night :)

Rosco-P
02-05-2015, 02:27 PM
However I have a device almost yearning to be converted to this use IMHO of course.
http://www.ebay.co.uk/itm/Fairport-hydraulic-block-brick-paving-slab-cutter-splitter-on-wheels-199-vat-/251742301650?pt=UK_BOI_Industrial_Tools_Constructi on_Tools_ET&hash=item3a9d02add2

I don't see any conversion that's going to make that into much of a usable press. Why not sell it for what is is, to a contractor looking for a paving brick splitter and use the money from the sale to buy the steel for a press frame?