Inquiry (采购产品): Air Cylinders I would like to have more information on an air cylinder for an application running with about 90psi. I tried to download the air cylinder from the website and the download failed. I am running solid works 2007 and would like to have some help to get the model R cylinder of the pr series with the spring extend. also if i could get information of how much force the cylinder would extend with using the spring extend. the spring extend would be needed to keep an aluminum gate up about 5x8x3/8" up in position until air is applied to make the gate go down. **** Hidden Message ***** Tyson LaRochelle AR 71701 USA Company: lockheed martin Title: co-op technical spec Phone: 870-574-0200 ext.4664 E-mail: tyson.larochelle@lmco.com **** Hidden Message ***** tyson.larochelle@lmco.com