I'm in the market for a 30 ton cylinder to go with my enerpac air driven pump.
I seen this offer:
Karl
Karl Townsend fired this volley in news: snipped-for-privacy@4ax.com:
Karl, probably not. Those cylinders have a HUGE amount of "stiction" between the piston seals and the walls. It often takes 200-300psi just to get them moving at all.
When Enerpak cylinders are double-acting, it usually involves valving, so the user can push or pull with the same cylinder.
Some of the portable gas-powered pumps have 4-way valves on them, though.
LLoyd
OK, I'll keep watching. All my 10 ton and the very short 30 ton have spring return inside.
Karl
I've seen quite a few H frame presses with external spring(s)...
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