Cylinder ID

[bones1]

I got these off E Bay and wondered if anyone would know anything about these or what they were used on.The seller knew nothing about them.They are of extremely high quality and it looks like they have regulators on them.Looks like military as they are heavy and of better quality than any I have seen before.
Thanks for any info.

What...You can't do this without pictures?

 

[GuglioLS]

I got these off E Bay

Got these what ???

Larry

 

[Rara Avis]

He's posting the pictures later...

 

[bones1]

For some reason I had to embed them, couldn't make the links work.
One more

 

[GuglioLS]

Best guess based on the little plastic hoses ? and brass compression fittings?, I am thinking maybe they are pneumatic (air) operated cylinders?

Larry

 

[bones1]

Larry, there was some hyd fluid in the lines when I extended them.I know some cylinders can use air or fluid.High pressure/low pressure, how can I test them?.Judging from the 1/2 in holes in the mounts they would seem to have some force to them.

 

[Wayne County Hose]

Pneumatic cylinders usually have a smaller rod as they have way less power. The lines do look like pneumatic. Can you get a close up pic of the cut end of the line? They do look like some nice hydraulic cylinders. Maybe for a low pressure application, that's why the brass fittings. Only way to test is to hook it up and turn on the power. Too bad you weren't closer, I have a nice test bench for hydraulics.

 

[GuglioLS]

Stephen (Bones1),

Those are a really nice matched pair of cylinders. Regardless of what they were used for in the past, my question is - what are you planning on using them for? What is the bore & stroke? and the rod diameter? How about the size of the clevis mounting holes? Do the clevis ends have a swivel? Want to sell them to me for a small (very small) profit?

Larry

 

[bones1]

Hi Andy.I have some more pictures that might help. It is thick wall plastic or Synflex hose.What would I need to get to build a small test bench?.

 

[bones1]

"Too bad you weren't closer, I have a nice test bench for hydraulics."
Road trip.
Andy, I can come up with lots of fine spirits to taste test

 

[Wayne County Hose]

If you would like to come up, I would be more than happy to test them for you. As far as a testing unit goes, I'm going to try to post a pic of the one I made. However, I am technologically challenged so bear with me. My test unit that I test rebuilt cylinders on consists of an old 12 volt pump and motor unit from a small battery powered forklift, an open center single spool valve. 2 lines out go to two 7000 p.s.i. shut-off valves, for load holding. I test all cylinders to 2500 p.s.i. for 5 minutes for internal and external leakage. All of this is mounted on a 3 gallon hydraulic tank. Not the prettiest thing, but very effective.

I'm thinking you might have the 4212 nylon tubing. Go to page 21 of the link below and see if the wall thickness matches any of your sizes. Just because there may be low pressure hoses to the cylinder doesn't mean it is a low pressure cylinder. The working pressure of the cylinder is based on seal type and material.

Your Synflex tubing could be almost anything. Go to this website: Eaton Product Literature Library > Fluid Conveyance > Synflex. Go to Synflex Hose and Fittings Master Catalog. See if you can identify which Synflex hose you have. Try to find one of the hose model #'s printed on your hose, if you can read the writing on the hose.This hose gets a bad rap because it's made of plastic, but some models handle up to 10,000 p.s.i.

I'm not really a drinker anymore, but a little hard cider is my weakness.

 

[bones1]

Good info Andy,I'll check them out further.I quit drinking too. It's been 29 months 6 days and I don't count the hours.
Larry. I am going to use these to lift the very heavy ramps on my equipment trailer.I have a 12 volt Haldex pump but I have to find out what these cylinders can handle.Pump is rated at 2000 lbs with 1/4 pipe fittings, the same size fittings as the cylinders.1inch rod on the cylinders and about 12-14 in stroke I'm guessing. I wish I knew if they were high pressure before I launch one of them.

 

[Wayne County Hose]

Good info Andy,I'll check them out further.I quit drinking too. It's been 29 months 6 days and I don't count the hours.
Larry. I am going to use these to lift the very heavy ramps on my equipment trailer.I have a 12 volt Haldex pump but I have to find out what these cylinders can handle.Pump is rated at 2000 lbs with 1/4 pipe fittings, the same size fittings as the cylinders.1inch rod on the cylinders and about 12-14 in stroke I'm guessing. I wish I knew if they were high pressure before I launch one of them.

I quit drinking for 8 years. Now, the past 2, I can have one beer and I'm satisfied. Haven't been drunk since, and never will be again.

Even if these cylinders have low pressure seals, they look plenty stout enough to lift equipment trailer ramps. You might want to install flow restrictors as this would make it much easier on your seals. The higher the cylinder speed, the harder it is on your seals. You could even take them to a cylinder shop and they could reseal them with higher pressure seals if need be. I think I would install them and see what happens.

 

[bones1]

Andy, I do need them to move slowly.Do I need flow restrictors to do this and if so what kind do I buy.Thanks for your help so far.

 

[bones1]

If these are low pressure cylinders would this Surplus Center Item Detail be what I would need to drop the psi from 2000 to operate them without blowing them up.I don't know if the pressure is adjustable on the pump.the pump is a Haldex 1510079 or Granger #4ne18.
Link here Grainger Industrial Supply: Power Unit,12 Vdc 4NE18 I can find very little info on the pump unit.Thanks for any help.

 

[Wayne County Hose]

If these are low pressure cylinders would this Surplus Center Item Detail be what I would need to drop the psi from 2000 to operate them without blowing them up.I don't know if the pressure is adjustable on the pump.the pump is a Haldex 1510079 or Granger #4ne18.
Link here Grainger Industrial Supply: Power Unit,12 Vdc 4NE18 I can find very little info on the pump unit.Thanks for any help.

The surplus center item is a flow control, not a pressure reducer. This would merely limit the flow, not the pressure. I think DHH has flow restricted fittings. They have a very small orifice, but it's really all the flow you need.

The worst that's going to happen if you install these is that they will leak. Then, you replace the seals with high pressure ones. Hook it up, see what happens.