Perbaikan rantai pasok komponen bearing lathe menggunakan lean supply chain di PT. HRS Indonesia
P T. HRS Indonesia merupakan perusahaan manufaktur yang memproduksi komponen Bearing Lathe untuk PT. NSK Bearing Indonesia. PT. HRS Indonesia mengalami beberapa permasalahan pada aliran rantai pasoknya yaitu keterlambatan kedatangan bahan baku dari supplier asing, yang mengakibatkan Gudang bahan baku kekurangan material. Selain itu, terdapat permasalahan pada proses produksi berupa kecacatan komponen, sehingga hasil produksi tidak sesuai dengan perencanaan produksi dan menimbulkan komplain dari pelanggan. Permasalahan lainnya yaitu keterlambatan pengiriman komponen untuk customer dikarenakan lead time yang panjang. Tujuan pada penelitian ini yaitu mengurangi pemborosan (waste) pada aliran rantai pasok komponen bearing lathe, meningkatkan efisiensi proses produksi perusahaan dan mengurangi lead time pada aliran rantai pasok. Oleh karena itu, perlu diterapkan metode lean supply chain. Tools yang digunakan untuk mendukung metode lean supply chain yaitu value stream mapping, process activity mapping, Analisa value chain dan fishbone diagram. Berdasarkan hasil pemetaan dan analisis hasil akar penyebab permasalahan, maka dilakukan usulan perbaikan sesuai dengan penyebab yang ditemukan. Usulan perbaikan tersebut berupa GPS software live tracking, SRM (Supplier Relationship Management), TPM (Total Productive Maintanance), melakukan evaluasi supplier secara berkala, SOP Produksi, Penerapan metode Poka Yoke pada pekerjaan inspeksi, penerapan Empowerment dan pelatihan operator. Setelah itu, dilakukan pemetaan hasil perbaikan menggunakan future state value stream mapping, sehingga didapat hasil manufacturing lead time sebelum perbaikan yaitu selama 3217 menit atau 2,23 hari dan PCE sebesar 44,64%. Setelah perbaikan, manufacturing lead time menjadi 2447 menit atau 1,70 hari dan PCE sebesar 58,07%. Sebelum perbaikan, supply chain lead time selama 105,39 hari, setelah dilakukan usulan perbaikan, supply chain lead time menjadi 101,77 hari.
P T. HRS Indonesia is a manufacturing company that produces Bearing Lathe components for PT. NSK Bearing Indonesia. PT. HRS Indonesia experienced several problems in its supply chain flow, namely delays in the arrival of raw materials from foreign suppliers, which resulted in a shortage of raw material warehouses. In addition, there are problems in the production process in the form of component defects, so that the production results are not in accordance with the production plan and cause complaints from customers. Another problem is the delay in the delivery of components to customers due to long lead times. The purpose of this study is to reduce waste in the supply chain flow of bearing lathe components, increase the efficiency of the company's production process and reduce lead time in the supply chain flow. Therefore, it is necessary to apply the lean supply chain method. The tools used to support the lean supply chain method are value stream mapping, process activity mapping, value chain analysis and fishbone diagrams. Based on the results of the mapping and analysis of the results of the root causes of the problem, then proposed improvements are made according to the causes found. The proposed improvements include GPS live tracking software, SRM (Supplier Relationship Management), TPM (Total Productive Maintenance), periodic supplier evaluation, Production’s SOP, Application of the PokaYoke method on inspection work, implementation of Empowerment and operator training. After that, a mapping of the repair results was carried out using future state value stream mapping, so that the manufacturing lead time before the repair was carried out for 3217 minutes or 2.23 days and a PCE of 44.64%. After the repair, the manufacturing lead time became 2447 minutes or 1.70 days and the PCE was 58.07%. Before the repair, the supply chain lead time was 105.39 days, after the proposed improvements were made, the supply chain lead time was 101.77 days.