ANALISIS PENYEBAB KERUSAKAN CHAIN COUPLING HYDRAULIC PADA MESIN MARUMA MH-125D

Abstract

Abstract - This study aims to analyze the causes of failure in the Hydraulic Chain Coupling on the Maruma MH-125D machine at PT. Komatsu Indonesia. The Chain Coupling serves as a mechanical connector that transmits power from the motor to other components within the machine. It was found that the chain in the coupling experienced significant wear, leading to excessive vibrations and noise during operation. Analysis using the Finite Element Method (FEM) revealed that the highest stress occurred at a motor power of 172 kW with a speed of 1514 RPM, measuring 79.8 MPa, which is still below the yield stress of SS 400 material. The study indicates that the chain failure is more likely due to inadequate maintenance and the aging of the chain. To prevent further damage, it is recommended to increase the frequency of maintenance and regular lubrication, as well as to explore alternative materials to enhance the chain's lifespan.