Feed Controls?

Forgot to mention. The catch is that I need the cylinder to be small. Small being 3-12" long and no larger than about 2" in diameter.

Regards, Joe Agro, Jr. (800) 871-5022 (908) 542-0244 Automatic / Pneumatic Drills:

A double rod cylinder will give you a constant volume.

What bore, stroke and pressure rating? Bimba makes a 500psi hydraulic version of their SS throwaway cylinders. Though they don't list a double rod hydraulic version, they do make similar double rod air cylinders, so a special may not be out of the question.

PHD can do it for sure up to at least 1500 psi, but much more expensive than Bimba.

It's also worth checking SMC.

According to Joe AutoDrill :

Look for a cylinder with equal sized rods coming out both ends. If you find one, that should meet your requirements.

If you can't tolerate the second rod, you'll really need to make some kind of accumulator to deal with the change in volume.

Good Luck, DoN.

Take a look here:

Joe - how are you going to drive the cylinder? The equal displacement cylinder implies a fixed displacement pump. Do you have any other ideas?

Hul

Joe AutoDrill wrote:

I think ive got a couple pneumatics that size......

Gunner

"A prudent man foresees the difficulties ahead and prepares for them; the simpleton goes blindly on and suffers the consequences."

- Proverbs 22:3

"Joe AutoDrill" wrote in news:va2Pf.643$ky1.332@trndny06:

Joe, If you are using this as a feed control cylinder, you really should think about adding a small resevior. Not only will this help with the volume difference and allow you to use a single-rod cylinder, it will aide in cooling, which is going to quickly become a problem if this is even a moderately repetative cycle application.

No drive. I want to use it in a unique application where the front and rear ports are linked to each other with no accumulator.

I'm shopping around. :)

Regards, Joe Agro, Jr. (800) 871-5022 (908) 542-0244 Automatic / Pneumatic Drills: