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Old 05-09-2012, 12:50 AM   #1 (permalink)
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Foot control for air over hydraulic jack?

Ive got a 20ton air over hydraulic bottle jack as the ram on my press and would like a 3 way rocker type foot control if possible- extend neutral and retract.

School me on hooking this thing up and a source for a pedal.
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Old 05-11-2012, 07:51 PM   #2 (permalink)
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Nobody?
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Old 05-11-2012, 08:16 PM   #3 (permalink)
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Those jacks don't work like that.

They are one way...up. You'd need a spring or weight to retract, but then only when the valve is turned.

The best you can do is foot pedal operated on or off for the extending of the jack and a spring return.

Foot pedals...quick google:

http://www.grainger.com/Grainger/ing...2Btrue&sst=All
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Old 05-11-2012, 08:41 PM   #4 (permalink)
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You won't have power down unless your ram currently has power down. I assume it's power up, gravity down.

If you want foot pedal air control it'll be as simple as providing it a supply and then running a line to the ram.

Look at mcmaster pn 9781k31
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Old 05-13-2012, 07:37 PM   #5 (permalink)
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Right, but how about this..

I get a small 1" stroke pneumatic cylinder (1" bore maybe)to operate the pressure screw on the front. Pushing forward on the pedal would retract the little cylinder, opening the screw and allow the jack and press springs to lift the ram. Pushibg back would keep tge little cylinder in the extended position, keeping the screw closed and allowing the jack to extend as normal.


Its perfectly fine to call me an idiot. Im on nightshift and my mind is somewhat hazy
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Old 05-13-2012, 07:49 PM   #6 (permalink)
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The "home or neutral" position would be little cylinder extended and bottle jack ready to extend. Basically the ram would only continue to retract for the brief period of time it takes the little cylinder to extend again after you release the forward pedal...im guessing only a couple inches depending on the strength of the springs used on the jack/press.


Regardless it sounds good in my head
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Old 05-14-2012, 10:29 AM   #7 (permalink)
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I sell the 20 Ton foot pedal control w/ ram for $399

Package includes:
  • 20 Ton Ram
  • 10,000 PSI Hose
  • 10,000 PSI Foot Pump w/ Gravity Release.
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Old 05-14-2012, 08:17 PM   #8 (permalink)
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You could find an air over hydraulic pump and a double acting valve and cylinder. Power open and close then.

Surpluscenter has great hydraulic parts prices.
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Old 05-16-2012, 08:05 PM   #9 (permalink)
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I may be crazy but in my mind I'll be into this a helluva lot cheaper than $400. Dependibg on the price of a foot control ($100-120 from what ive seen), plus a little cylinder ($15-25)and misc fittings hose ant etc I should be able to do what I want for less than $150....IF it will work.

A bolt on and go kit would be nice though. Do you offer anything in the 30-40 ton range?


I havent tried surpluscenter. At this point I've only flipped through the Grainger catalog at work.
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Old 05-16-2012, 08:11 PM   #10 (permalink)
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Damn fat fingers and a touch screen phone.
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