... : brass,bronze, 40Cr,45#;20CrMnTi 2. process: hobbing, shaping; 3. gear inspect center the product: Tooth (Z)Modul(M)Diameter(Φ)Normal ... the customer's requirment.Right, Left, Spur5-8machine, auto,tractor, machine for agriculture,hydraulic pump,engine, transmissionNote: 1.The material can be ... and temper, Medium and high frequency.our workshop:the package: gear shaft for mining machine