... mine, build, electron, port etc..professional automation production and conveying transmission equipment MaterialC45, A3, 40Cr, 20CrMnTi, 42CrMo ... , copper, stainless steel and so on as per your requestprocessForged or castingHeat ... customer requirementPerformanceHigh precision, high wear resistance, low noise, smooth and steady, high strengthModel numberStandard or nonstandard ( ...