S45C 20CrMnTi 40Cr 42CrMo Perfect rotor and gears 1.We specializes in rotor ,spur gear, helical gear ,slewing ring gear, bevel gear,motor ... can be up to 2m. 3.Quality:finest material and process.Hardened and durable,good connection 4.Package:inner package,foam; outer ... had made the deals successfully with India, Iran,Germany,Japan and many other countries.Wormly welcome to visit our factory. Reliable ...