... brass,bronze, 40Cr,45#;20CrMnTi 2. process: hobbing; 3. gear inspect center the product:Tooth (Z)Modul(M)Diameter(Φ)Normal ... s requirment.Right, Left, Spur5-8machine, auto,tractor, machine for agricultureNote: 1.The material can be 16MnCr5, 40Cr, 45 ... customer's requirements 2.Heat treatment: Nitriding, Carburization and hardening, Quench and temper, Medium and high frequency.the workshop:the package: