... rubber mixer (1)Rotors made out of one piece alloy steel casting, then mixing edges surface are hard welding coating/ ... pressure pneumatic cylinder for pulling the compound into two rotors under high pressure. (5)Drop Door Mechanism: Single piece ... requirement.Usage: Most Suitable Kneading application: E. V. A. Rubber & TPR, Sole, Rubber Roller, Hoses, Belts, Sponges, Sport bolls, Vibration Insulator, ...