The most ellipse 4-wing rotors installed in Banbury mixer are used popularly in the large size of tire factories of China, the working part of rotor is spiral wing body shape and its structure affects the quality of compound and the productivity directly.

• 我国大型轮胎厂普遍使用的本伯里型密炼机上转子均为椭圆形四棱转子,转子的工作部分螺旋棱体形状及其结构直接影响炼胶质量和生产效率。