... shipping NRV063 VS Small Aluminium Alloy NRV Gear Reducers with VS Worm Extension Shaft Specifiction: Type:Worm Gear Speed ... Aluminum AlloyWorm Gear-Copper-10-3#Worm-20CrMn Ti with carburizing and quenching, surface harness is 56-62HRCShaft-chromium ... Food Stuff, Ceramics,CHEMICAL,Packing,Dyeing,Woodworking,Glass.IEC Flange:71B5,71B14,80B5,80B14,90B5,90B14Lubricant:Synthetic&MineralAllowed radial ...