Crab Winch is an iron machine included with two triangular uprights. This is applicable to be used in connection with pumping gear. Its working mechanism enables it toboost the velocity ratio in a linear way. It can be used for the areas, where loads can be lifted by a greater elevation angle. Crab Winch is utilized to lift the load on several rugged surfaces. It is noise-free and have long service life. The machine allows for erecting pillars, loading and unloading of heavy loads, etc.