Ring and pinion gear 1,Testing equipment: Gleason testing machine 2,Material: 20CrMnTi 3,Pressure Angle: 20 Ring And Pinion GearOur gear parts has been suppling to South American for many years. They are OEM to agricultrual equipment transmission. Material :20CrMnTiGleason testing machine.Gears, gear parts, transmission gears, motive gears, ring and pinion gear. Ring And Pinion Gear