P PT. 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.