Abstract: A bearing manufacturing line is complete flow of rings from material to finish in form of one piece flow from one machine process to another sequentially placed one after another connected by conveying manufacturing lines. A production manufacturing line is “factory within the factory” with dedicated machines, assortment and people, forming a well-structured flow of products by the bottleneck operations. Management of bottleneck is very important as it determines the production capacity, production capacity determines the output and output determines income, the output influence the cost per product, the income and cost determine the result and result finally determines future.The lost minute in the bottleneck is a lost minute for the entire manufacturing line and for all future.Managing the bottleneck is the most important activity in the entire production manufacturing line.

Keywords: Cycle time, Standard cost, Bottleneck machine, hard turning.