1.WDseries and WS series worm gear reducer as the china market stardar (Q/ZB125-73) produce the first grade gear. Main datasheet The slide speed is less than 7.5m/s, worm gear is less than 1500r/min, The tempereter is -40°C-+40°C, specification ,WD80-120,WD150-360,WS80-120,WS150-360. 2. reducer ration have larger scope, efficent is high, steady,low nosie, small vocann,light, long life and easy repaire. .