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水厂铁矿共有10台圆锥破碎机,其中PYB2200型3台,PYD2200型7台。主轴端部是S250×12的矩形螺纹(图1)。近几年来,主轴矩形螺纹经常损坏。造成
There are 10 cone crushers in Shuichang Iron Mine, of which 3 are PYB2200 and 7 are PYD2200. The spindle end is a rectangular S250 × 12 thread (Figure 1). In recent years, the spindle rectangular thread often damaged. Cause