... .3KW 3.8KW 4KW The above parameters is according to oil material that is refined, separated, flaked, steamed and fired, and the ... with reasonable techniques. 2.Operating principle: 1.When oil press is on work, material enters the extruding chamber from the hopper and ... is quite strong friction among press screw, chamber and the oil materials. 3.On the other hand, root diameter of the ...