Sintered bushings play a crucial role in self-lubricating systems by significantly reducing friction and wear. Their operation relies on lubricating oil stored in microscopic pores, which expands under heat and motion to form a protective oil film. This mechanism minimizes surface contact and ensures smooth performance. Additionally, the porosity of these bushings retains lubricants like graphite, providing continuous lubrication and reducing wear over time. The fine carbides formed during powder sintering further enhance their wear resistance, making them indispensable for demanding applications.