1,JH Series winches are used spherical worm drive. 2,JD Series winches are used planetary gear drive winch with a ... installation, smooth operation, safe and reliable.JD series of major technical parameters of dispatching winch...2,JD Series winches are used planetary gear ... and other auxiliary traction work.Model JD-1 (JD-11.4) JD-1.6 (JD-25) JD-2.5 (JD-40) JD-3 (JD-45) Traction KN 10 16 ...