This series is a gear reducer driven winch, mainly used for hoisting, pulling and unloading, and towing heavy objects. Such as long-distance traction and long-distance lifting of various large and extra large concrete, steel structures, steel cables, and steel cables. The JM friction winch has the characteristics of constant wire rope speed and smooth lifting. Suitable for the construction of various bridges, ports, docks, and other road and bridge projects, as well as the installation of large factories, mines, and power engineering equipment.