Jump to content

Baby hydraulic press!

Recommended Posts

Oh God, just when I thought “enough of this hammering crap”..........gonna build me a DIY mini-press like what we’ve seen before on You Tube.......then here comes the Dream Machine!!!

And it looks like the whole arrangement can fit within a 4’x4’ area? (I did take Johns advice and looked at Coal Forge 12 ton). This is sweet as well

I already thrown Her a bone about building an outside shop, (didn’t include running electrical cost yet!), now this beauty and more sleepless nights. Good night! :(:( When does it all end? LMAO!


Gary LT


Link to post
Share on other sites
3 hours ago, John N said:


A 'log splitter' press is a very good option, just try and brace the frame, and remove some slop from the moving parts, the frames are really not designed for the 'dead stop' every 1 second you get forging! The power pack on this press is basically 'log splitter' with non standard pump / motor configuration!



Good point re: Bracing - any tips? Triangles are strong so I guess brace the body to the legs etc - Just wondering if the legs are built of sturdy enough stock & bracing is okay, or if they need replacing... I guess we'll see.


V interested in your forging presses... Have you considered a quick mailchimp email list sign-up to get notified when you've worked out a cost etc? I'd sign up and reckon others would, too! :D


Link to post
Share on other sites

If you're considering a log splitter be sure to check diameter of cylinder because you'll need at least 3.5" for a 12 ton at 2500 psi.  Also check the GPM of the pump.  Most log splitters have a low GPM giving a slow ram travel.


Most of the log splitters I've checked had very little that could be used with a decent forging press.  By the time the log splitter got large enough to have useful parts, the cost was close to what it cost to build a good press.



Link to post
Share on other sites
3 hours ago, Gary LT said:

(I did take Johns advice and looked at Coal Forge 12 ton)

Be sure to talk with them before ordering.  Their 12 ton press only has a 3" cylinder which gives 9 tons, NOT the 12 ton advertised.  As mentioned before I replaced the 3" cylinder that came on my Coal Iron press with a 4" cylinder that works good.

Link to post
Share on other sites

That looks awesome John (though a foot-switch option may be required). Financially speaking it’s probably just a pipe dream for me at the moment, but I would definitely want to know the price of one once you have it sorted. Thanks.

Edited by Charles dP
Link to post
Share on other sites
  • 3 months later...
On 10/5/2021 at 12:08 PM, KenH said:

You did a good job on that press.  On this side of the pond I understand that's called an "H" frame.  As you said, perhaps the strongest design around for a press.  Is that 1"X3" solid steel columns on the side?  WOW, you're right, way overbuilt for 12 tons.  Is that a 4" cylinder?  Looks like a long stroke? 


I've recently got a Coal Iron press, the one they call a "12 ton", but is actually only 9 ton.  The one I got was only 8 ton due to mis-adjusted pressure on control valve.  My understanding from email correspondence with Coal Iron they designed the "12 ton" with a 3.5" cylinder running at 2550 psi which gives 12 ton.  Due to cost (or "ease of sourcing" is the phrase they used) a 3" was selected to run at 2550 psi which gives 9 ton.  My press was adjusted to only 2250 psi which is 8 ton.  I installed a pressure gauge so I could see the actual psi.


Link to calculate tons:  



I have since changed to a 4" cylinder ($133 shipped) which gives an honest 12 ton at 1925 psi.  I'm running it at 2250 psi for 14 tons and the frame seems to be holding just fine.  I ran some calculations and increasing 12 ton to 14 ton gives only an extra .001" of stretch to column.   


Link to calculate stretch of column: 



I don't mean to hi-jack the thread, but thought some folks might like the calculation info.


Ken H>

I have the Coal 12ton. Am doing the Wen 4" x 8" (CC4008) cylinder upgrade. Would like to add a PSI gauge as you did, but I'm not sure what t-fitting size I would need. Will you post a link to parts or DM them, please? Just want to verify I'm getting what I paid for - 12 tons. Thank you.

Edited by DFurguson
Link to post
Share on other sites

With all the information on here I wanted to crunch some numbers for my Coal 12 ton. I couldn't find info for the motor on their website. They paint over the badges. 2HP motor with 4" cylinder is what their 16 ton is. Am I reading that correctly, if you rewire it from 115 to 230 it goes from 1430RPM to 1720RPM?



Edited by DFurguson
Link to post
Share on other sites

Huh... 50 Hz is the European spec - I'm pretty sure US standard is 60 Hz. The RPM difference would really only make sense if it's 50/60 Hz, not the voltage. And doing some math...


10 hz is 20% of 50

20% of 1430 is 286

1430 + 286 is 1716


Which I would think is quite reasonably within rounding distance - I'm quite willing to bet it is neither precisely 1430 nor 1720


I think that placard might be trying to show too many things at once, to be honest.

Edited by Ted Stocksdale
  • Like 1
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...