... gear, sprocket, chain wheel) transmission, gear box, reducer ,shaft and sleeve etc.ApplicationSuitable for various light vehicle transmissions, auto ... nodular cast iron , ductile iron specifiedModuleNormal modal is between 1.5~10Out Diameter100mm-1500mmProcessingPrecision hot and cold forging, casting, ... .CertificateISO9001:2000Minimum quantityAccept trial order right hand worm shaft and worm wheel