1. Usage of machine (mine or something else) 2.Lifting workers or materials 3.The loading capacity JZ series sinking winchesJZ series sinking winches have advantages of strong ability of hoisting ,large capacity of rope,stable operation and so on. It is mainly used to hang swinging tray,water pump,wind-cone,compressed air cylinder and grouting pipe in the excavation works in the metal ores,non- ...