Introduction Spindle oil is an essential component in high-precision industrial machinery, particularly in sectors where equipment reliability and low friction are crucial. Used predominantly in high-speed spindles of textile and metalworking machines, this specialized lubricant ensures smooth operation, minimizes wear, and enhances the longevity of rotating components. The increasing automation in manufacturing, rising demand for energy-efficient lubrication systems, and the ongoing need for industrial precision are contributing to the rising use of spindle oils. Furthermore, the integration of modern lubrication technology across automotive, aerospace, and textile industries continues