Slewing Bearing, Slewing Ring, Slewing Circle manufacturer / supplier in China, offering Swing Ring PC4000-6 Komatsu Slewing Circle Excavator 89661140, Komatsu Slewing Ring PC3000 Slewing Gear 89810440 Excavator Slew Circle, R290/300 Slewing Ring Excavator Hyundai Rotary Gear 81n8-00021 and so on.