Preventive Maintenance Analysis of Komatsu OBS-25T Power Press Machine Using MTBF and MTTR Metrics

Abstract

Technological advancements in manufacturing have greatly improved production efficiency, particularly through the use of advanced machinery. As key components of industrial operations, machines must operate optimally to meet production targets, often requiring continuous use. To maintain performance and reliability, regular maintenance in accordance with Standard Operating Procedures (SOPs) is essential. This study analyzes the maintenance management system at PT. XYZ, focusing on the Komatsu OBS-25T Power Press machine. The research evaluates the Preventive Maintenance strategy using Mean Time Between Failure (MTBF) and Mean Time To Repair (MTTR) as key performance indicators. The results show that the monthly maintenance schedule is effective. Between January 1 and April 1, 2024, several component failures occurred, including lamp, roll feeder, hand sensor, oil flow, memory slide, alarm No. 11, conveyor belt, and uncoiler malfunctions. The total MTBF was 171.387 minutes (average 13.183 minutes), and the total MTTR was 1.950 minutes (average 150 minutes). The machine of availability rate reached 99%, demonstrating high operational efficiency and effective maintenance management.