Penentuan Interval Waktu Penggantian dan Perbaikan Komponen Kritis Mesin Bubut Type SS-850 di PT. Hamdan Jaya Makmur Dengan Metode Age Replacement

PT. Hamdan Jaya Makmur is a company that runs in the field of Machining, Engineering, Fabrication, Stamping, and Trading Company, which produces products for small, medium modern industries. Less than optimal maintenance system with corrective causes often experiences machine failure. Based on historical data, it can be seen lathe type SS-850 experienced very high downtime. Therefore, necessary to plan preventive order produce according target increase reliability machine. The purpose this research determine time interval cost replacement components at Makmur. method used Age Replacement method, namely by determining critical components, distribution pattern damage, parameters, calculating MTTF MTTR, where results obtained are intervals, costs. from there four SS-850, electric 11 days Rp.3,080,679,253, bearing have 14 Rp.4,931,989,307, gearbox component has 33 Rp.11,621,532,829, bolt nut Rp.1,615,296,412.