There are 4 types of speed reducers and 3 types of motors obtainable in this range, all varying in performance and dimensions.
Four sizes of CHPC pre-stage gears can be found to pair with the gears; 
they are also constructed in aluminium and are painted like the worm gears
Gears that are supplied with mounting flanges must be assembled with motors whose shaft and flange tolerances match a “normal class” of quality to avoid vibration and forcing of the insight bearing.
SPECIFICATION:
Including 6 types equipment unit,Customer can choose
them according to the Worm Gearbox And Helical Reducers For The Biomass Boiler Sector request.
Gears that are supplied with mounting flanges must be assembled with motors whose shaft and flange tolerances match a “normal course” of quality to avoid vibration and forcing of the input bearing.