... internal gear, sprocket, chain wheel) transmission, gear box, reducer ,shaft and sleeve etc.ApplicationSuitable for various light ... aluminum alloy , zinc alloy , brass , gray iron , nodular cast iron , ductile iron specifiedModuleNormal modal is between 1.5~10Out Diameter100mm- ... CertificateISO9001:2000Minimum quantityAccept trial order ductile iron gear box for corn harvester/binder machine