10,000 psi hydraulic pump questions....

Junkyard · Sep 18, 2019

I have a hydraulic torque wrench I have yet to use, deal was too good to pass up. Now I have a need but only have a pump made to run cylinders and such.

Question I have is can I add a regulator to the pump and run the wrench with it? It’s a 10,000 psi pump made to run all the single and double acting cylinders etc.

Is there more to a torque wrench pump than a regulator? I don’t mind buying a pump but if the one I have will work with a few changes then I’ll use it.

Thanks in advance for the help!

John C. · Sep 18, 2019

I would think you could just install a gauge and not run the wrench over the critical pressure. What is the max pressure the wrench can run at?

Junkyard · Sep 18, 2019

It’s 10,000 psi max. Most of what I’d use it for isn’t super critical so watching a gauge to get an approximate torque value wouldn’t be a big deal.

We’re running a down hole hammer and the bolts holding the hammers into the can torque to 2,400. Through a 4:1 that’s still a stiff pull on a big torque wrench.

I’ve just done bottom rollers on two Watson drill rigs and it would have been nice for that too. Can’t pull the track frames on them so no flipping them over!

JD955SC · Sep 18, 2019

When you get it set up you will love it for the high torque stuff

We have an air powered gun style one and a hydraulic torque wrench. They can be a godsend on undercarriage

Junkyard · Sep 18, 2019

I’ve been quietly lobbying for a pump. I have a hollow ram and this wrench. There’s been a handful of times it would have saved a lot of back breaking work plus leave a lot of jobs one man, maybe two at the most.

Some of our rigs are getting a little longer in the tooth and it’s a matter of time before we have another IMT rotary to rebuild. Several places there that 60 ton cylinder would be ideal.

Mike L · Sep 18, 2019

Might be a dumb question but how will you know what pressure will equal what torque? Back at the stealership we had a couple different tools like a torc up and they each had a chart to tell you where to set the regulator to achieve desired torque.

Junkyard · Sep 18, 2019

Mike L said:
Might be a dumb question but how will you know what pressure will equal what torque? Back at the stealership we had a couple different tools like a torc up and they each had a chart to tell you where to set the regulator to achieve desired torque.

My wrench has a pressure/torque chart. Anything I’m doing now isn’t super critical. It might take a little practice to figure things out but it shouldn’t be too bad.

DARO · Sep 18, 2019

Iv used one with a electric pump. It was a Enerpac pump. For get the name on the wrench. Pump had two direction flow. Wrench would not rachet unless you changed dierection on the pump. Only had a a few bolts to do so i just watched the gauge for the torque pressure. The pump that was made for the wrench had a adjustable relief built into the pump. And all you had to do was let go of the button and the wrench would ratchet. Made for a tiresome project when working alone.

Junkyard · Sep 18, 2019

I think I’ve got the go ahead to get a new pump. Just got to pondering for my own use should we decide not to integrate it at work.

I could throw down the company card but I kinda like my a$$ the way it is!

Nige · Sep 19, 2019

Same experience as posted by DARO above. The hydraulic pump for a torque wrench is different to one for any other system, even one for double acting cylinders. The torque wrench pump has to cycle directions every time the wrench retracts to "reset" for the next cycle. Only pumps that are sold with this feature will work as designed with a torque wrench. Anything else and you'll need to manually cycle the pump, which is fine for one bolt but gets a bit wearing if you have to do a dozen or so of them...….
Hydraulic torque wrench pumps are usually quite small and pretty low flow compared to a "normal" pump. Image below is from the Grainger web site. It's the same one we used to use.

https://www.enerpac.com/en-us/bolting-pumps/USPumpsTorqueWrench

Junkyard · Sep 19, 2019

Is that ratcheting cycle for any style wrench? Mine is a square drive and not a cassette type. I’d assume they’re the same so it’s the ratchet holding whatever torque value you’ve achieved vs hydraulic pressure?

Nige · Sep 19, 2019

Yessir, AFAIK. We had both the square drive and cassette types and both worked the same way.
The Enerpac website might well answer a load of your questions, even though the wrench you have is not that brand. You may have to download the technical data sheets to get all the "how it works" detailed info - the last time I bought any stuff of this type was probably 10 years ago.

Post a photo of your wrench.

10,000 psi hydraulic pump questions....

Junkyard

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John C.

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Junkyard

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JD955SC

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Junkyard

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Mike L

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Junkyard

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DARO

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Junkyard

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Nige

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Junkyard

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Nige

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