... This machine of decelerate in most cases already alternative two grade, level 3 common cylindrical gear and cylindrical worm gearbox, in ... , shipbuilding, light industry, food, textile, printing, dyeing, pharmacy, rubber, plastic, and lifting transportation, etc have day by day the widespread ... slows down transmission ratio for 1/6-1/87. Two level when slowing down for 1/99-1/7569 transmission ratio ...