<![CDATA[ AbstractThe increasingly intense industrial competition requires companies to maintain the reliability and efficiency of production machinery to ensure that product quality and quantity remain optimal. One of the most important pieces of equipment in the mining production process is the belt conveyor, which functions to continuously transport materials. Failures in bearing components can lead to downtime, reduced productivity, and increased maintenance costs. This study was conducted at PT. Mifa Bersaudara with the objective of analyzing the causes of bearing failures in belt conveyors using the Failure Mode and Effects Analysis (FMEA) method. Research data were collected through field observations, interviews with the maintenance division, and records of equipment failures during the period of June–July 2023. The analysis was carried out by evaluating three key FMEA parameters: Severity (S), Occurrence (O), and Detection (D), to determine the Risk Priority Number (RPN) for identifying potential failures in a system, component, or process, as well as their causes and impacts. The results of the analysis indicate that the Inner Ring component has the highest RPN value of 175, followed by the Outer Ring (144) and the Cage (120), indicating that these components have the highest risk of failure and therefore require priority attention in maintenance and preventive actions. Keywords:Belt Conveyor, Bearing, FMEA, RPN, Fishbone AbstrakPersaingan industri yang semakin ketat menuntut perusahaan untuk menjaga keandalan dan efisiensi mesin produksi agar kualitas serta kuantitas produk tetap optimal. Salah satu peralatan penting dalam proses produksi di sektor pertambangan. Belt conveyor, yang berfungsi memindahkan material secara berkelanjutan. Gangguan pada komponen bearing dapat menyebabkan downtime, penurunan produktivitas, dan peningkatan biaya perawatan. Penelitian ini dilakukan di PT. Mifa Bersaudara, dengan tujuan menganalisis penyebab kerusakan bearing pada belt conveyor menggunakan metode FMEA. Data penelitian diperoleh melalui observasi lapangan, wawancara dengan divisi maintenance, serta pencatatan data kerusakan selama periode Juni–Juli 2023. Analisis dilakukan dengan menilai tiga parameter utama dalam FMEA, yaitu Severity (S), Occurrence (O), dan Detection (D) untuk menentukan nilai RPN dalam mengidentifikasi potensi kegagalan pada suatu sistem, komponen, proses dan penyebab dampak yang terjadi. Hasil analisis menunjukkan bahwa komponen Inner Ring (cincin dalam) memiliki nilai RPN tertinggi sebesar 175, diikuti Outer Ring (144) dan Cage (120), yang menandakan bagian tersebut memiliki tingkat risiko kerusakan paling tinggi. Kata Kunci: Belt Conveyor, Bearing, FMEA, RPN, Diagram Tulang Ikan ]]>
