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)...
PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.