I purchased a BARE-co cylinder on Ebay and I'm not real sure on the size of the ports. I think it is an Australian company.
These are the specs:4"Bore x 18" Stroke
Shaft Diameter 2"
Closed Length 28 1/4"
Pin...
I found this site while researching to build a grapple. I have enjoyed the site a lot. My dealer had a manufacturer trying to get him to try a new grapple they were producing so I bought it for about the same $$ it would have cost to build one. How ever this site did give me a lot of design...