Maximum chain strength and resistance to wear are achieved by strict control of the material specification and by using state of art heat treatment processes: Special materials selected for the unique combination of demands from the cement industry. Fatigue life is improved by maintaining precise fits and tolerances between the pins, bushes and side plates. Bush and roller life are maximized by controlling the concentricity of these components and careful selection and control of the heat treatment process. Chain and sprocket life are optimized by the rigid control of pitch accuracy, resulting in excellent gearing, lower friction and reduced wear.