Slewing Bearing, Slewing Ring, Slewing Circle manufacturer / supplier in China, offering R290/300 Slewing Ring Excavator Hyundai Rotary Gear 81n8-00021, Jcb Js330 Excavator Slewing Ring Jsb0022 Rotary Gear, Cx130 Swing Circle Slewing Bearing Excavator CAS Slewing Ring Knb 0782 and so on.