Planetary Gearbox, Slew Drive, Tracked Undercarriages manufacturer / supplier in China, offering 2 Speed Gearbox Solution for CNC Machine Tool Spindle with 2 Speed Intelligent Shift, 2 Speed Gear Reducer Adapt to More Motors for CNC Machine Tool Spindle, Gear Shifter with High Shifting Force for 2-Speed Spindle Gearbox and so on.