Analysis of Line Balance Sound Board Glue Production on Assembly Grand Piano Process: Case Study PT Yamaha Indonesia

In the face of increasingly fierce competition every company must make the production process efficient and continuous improvement. One of the ways to make the process efficient production by production line balancing. PT Yamaha Indonesia is a company that performing continuous improvement. The problems that still exist in this company is the balance that is less than optimal production line. Line efficiency sound board glue working group on the actual condition of 47 % and had a total time of 211.91 min idle by the number of work stations as many as 16 stations. The low value of efficiency and high idle time reflects the imbalance of production lines. To resolve these problems used two methods region approach and ranked position weight. Analysis of the balance using the region approach causes increased line efficiency by 76 %, total idle time dropped to 60.86 min and the number of work stations was reduced to 10 stations. Meanwhile, the analysis of the balance of the position ranked weight method can improve line efficiency to 84 %, lowering the idle time becomes 35.67 min and the number of work stations was reduced to 9 stations. It can be seen that the line balancing by using the ranked position weight can be applied to the company PT Yamaha Indonesia.