S series helical-worm reducer overview: Ratio: 23.8-389 Torque: 0.048-10.2kN Power: 0.12-45kW * Helical gear combine with worm, structure compact, ratio big. * When ratio is 23.8-67.8, average efficiency is 77%, when ratio is 73.7-389, average efficiency is 62%. Average efficiency of S/CR combination is 57%. * The worm is levorotatory.