Superiority 1. Hydraulic-driven, high efficiency(driving power equivalent 60% traditional) 2. Permanent lubrication(during bearing life period without refueling) 3. Clamping pressure is adjustable(non-existence of skidding, productivity is 50%-80% more than traditional) 4. Rolling diameter can catch 1.1 times of the top roller Characteristics of four roller plate rolling machine 1. NC control 2. Leveling easily 3. Once circle forming 4. Large cone rolling more efficient 5. Easy to correct the wrong stage SL four roller plate bending machine's two structure characteristics 1. Arc swing of the side roller, leverage increased pressure force 2. Proportional valves on both sides of the roll synchronization
