... XJ450, XJ550, XJ650, XJ1000 and XJ1200. The power system, drawworks system and driving system are all installed on a carrier, therefore it is ... mainly composed of chassis, power and driving system, drawworks system, mast, hydraulic/air/electric control system and rotary system. The rig traveling and ... in good order and avoid inter twist. 5. Power for chassis and deck operation parts are taken from ...