electric Hydraulic power pack for workshop press?

[ELL]

So I am not satisfied with the speed of my workshop press. Can I use an electric Hydraulic power pack to make the action faster? How fast will the action be with one? Thanks.

 

[dieselsamurai]

Ive looked into this and most electric ones unless really expensive are not enough bar , I have a few 12v and 24v ones for small hiabs tippers etc and they are about 300

best option if you have it is air if you have it in my opinion

Pardon our interruption...

 

[Richiew]

Colin Furze did it.

 

[dieselsamurai]

You can buy 240v pumps of course but very spendy

ActionRam Hydraulic 240volt Electric 2ltr Pump (HHB-700T-240V) - SafetyLiftinGear

ActionRam Hydraulic 240volt Electric 2ltr Pump from SafetyLiftinGear. ActionRam Hydraulic 240volt Electric 2ltr Pump

www.safetyliftingear.com

 

[m_c]

Smaller presses generally don't run that high a pressure.
My 12tonne one has a ~40mm diameter piston/rod, which equates to around 100bar.

However as has been mentioned, hydraulic power packs are going to be at least £5-600.
Air is far cheaper, but often not much quicker than a manual pump, however take a lot less effort.

 

[Dozzer]

Look at air pumps for hydraulics, a lot of lorry beam lifts and other high load cylinders use air.
everyone from Vevor to Enerpac do them, its just how much you want to spend?

https://www.vevor.co.uk/air-hydraul...3-liter-hose-coupler-accessory-p_010573304956

 

[dieselsamurai]

Smaller presses generally don't run that high a pressure.
My 12tonne one has a ~40mm diameter piston/rod, which equates to around 100bar.

However as has been mentioned, hydraulic power packs are going to be at least £5-600.
Air is far cheaper, but often not much quicker than a manual pump, however take a lot less effort.

never heard of a 100bar press a few quick calculations and you pump must be 700bar to get anywhere near 12ton with 40mm

 

[m_c]

never heard of a 100bar press a few quick calculations and you pump must be 700bar to get anywhere near 12ton with 40mm

View attachment 507959

Just realised I used the wrong units.
I'll have to have another look tomorrow, as I'm pretty sure the hose isn't even rated that high, but then for what it gets used for, I've never had it above a couple tonne.
I reckon I'd struggle to get above 6 or 7 tonne force with the manual pump.

 

[hotponyshoes]

Not something I've tried but could you use a cheap, high flow pump to push the ram into contact with the work piece, then do the actual pushing with the existing hand pump?

Or see if you can find a 2 speed pump and a sensible price. They are great as they move the ram quickly until the load builds up then automatically drop into low gear (or something, I'm not sure exactly how it works) to build up high pressure.

I think the most common enerpac types go upto 10,000psi (700bar)
The next common size down seems to be 3000psi which is a lot cheaper.

Another option is just to make up a couple of sizes of extension for the existing ram to save having to pump it all the way out when you don't need to. Or, Fit an adjustable collar to stop it retracting any further than necessary.

Don't use anything that is both fast and high pressure as you loose the 'feel' and control and make it harder to use.

 

[m_c]

Previous employer had a press where you could pressurise the reservoir with air which was enough to bring the ram into contact with whatever you were pressing.
Can't remember what make it was though.

 

[zzr1200]

never heard of a 100bar press a few quick calculations and you pump must be 700bar to get anywhere near 12ton with 40mm

View attachment 507959

Any press that is portapower based will be 700bar, so that's most of Machines Marts range of home workshop presses and other cheap presses.

 

[harveyp6]

Any press that is portapower based will be 700bar, so that's most of Machines Marts range of home workshop presses and other cheap presses.

I've got an old EPCO press where the original pump failed and it now uses a porta power pump and I never realised it was working at that sort of pressure.

 

[dieselsamurai]

I've got an old EPCO press where the original pump failed and it now uses a porta power pump and I never realised it was working at that sort of pressure.

Its surprising how much pressure is in those hoses often ropey if old and will cause alot of injury if they let go

 

[dieselsamurai]

Any press that is portapower based will be 700bar, so that's most of Machines Marts range of home workshop presses and other cheap presses.

Yeah that why i used that figure as most pumps you can buy are 700 , mobile machinery mostly runs at 250-350