Re: Hydrualic question.

Posted by Dan from PA on July 01, 2000 at 10:41:07 from (151.201.98.211):

In Reply to: Hydrualic question. posted by Kermit on July 01, 2000 at 08:48:56:

I'm not 100% certain, but I think that the float position opens both work ports to the return line, and the regenerative position opens the work ports to each other. The regenerative function allows a hydraulic motor to coast to a stop, but will not allow a cylinder to float because the volume of oil in the system must change due to the rod coming in or going out of the cyl. Actually, allowing compressive force to be on a cyl whose valve is in regenerative position (particularly one with a small dia rod) can be quite dangerous because you've effectively turned the system into a single-acting ram whose piston dia is equal to the rod dia. This results in extremely high pressures, which can blow lines, cylinders or valves. The same thing applies to cyls that need rebuilding because they are bypassing. Another reason to stay out from under those raised loader arms!

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