Oil Press Machine 1 Screw speed: 30-40 r/min 2 Dimension ... complete with reasonable techniques. 2.Operating principle: 1.When oil press is on work, material enters the extruding chamber from the ... condition in the chamber, there is quite strong friction among press screw, chamber and the oil materials. 3.On the other ... , high productivity and high oil product ratio. . screw oil press machine/6YL-100 oil ...