The Vettus system is a double acting "balanced" cylinder. Balanced
cylinders have the rod going all the way through so the pressure is the
same in both directions. In that case you can divide by 2.

Keep in mind though that if you use two cylinders you need to double the
capacity of the pump to get the same number of hard over turns.

garry crothers wrote:

"Glenn Ashmore" wrote in message
news:rJiDb.4799$JD6.1854@lakeread04...

If the cylinders are single action each needs to take the full load. If
double acting it gets more complicated both in calculation and
installing. The pulling force is reduced by the area of the rod.



Excuse my ignorance, but how can I tell if the cylinder is double action or
single. I've just looked at the Vetus catalogue and cant see any reference
to single or double?


For

example a 2" cylinder with a 1" rod will have a pull force about 75% of
the push so you can't quite divide by 2.


I kinda thought that it would just be as simple as divide by 2...



thanks again
garry



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Glenn Ashmore

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