Expansion of the application of the fromwinch Winch Cable Dampener and reducer: a buffer valve with the axial piston hydraulic motor and planetary gear mechanism composed of slewing mechanism. The upper frame is mounted on a single row spherical integral slewing ring which can rotate 360 degrees continuously. The whole system can be applied to excavators, loaders, cranes and other construction machinery. Other include: two-speed electric winch, variable speed hydraulic fromwinch 12500lbs electric winch, hydraulic rotary mechanism, hydraulic winch Worm, two-speed heavy duty hydraulic winch and heavy duty hydraulic winch and other engineering fromwinch electric winches for 4x4 system.