... iron housing & copper worm wheel WPEX gear Speed reducer TypeWPEX gear Speed reducerSize40/70--155/250Ratio200.300.400. ... reducer.1 High quality, It adopts hard tooth gear with high accuracy2 Large output torque,stable transmission with ... be applied to many industrial area, such as Metallurgical, mines, lifting, transportation, petrochemical, construction, textile, pharmaceutical, food, environmental, ...