In every industry where water-based coolants, cutting fluids, or process liquids are used, tramp oil contamination is a persistent problem. Over time, oil from lubricants, hydraulic leaks, and other sources mixes with coolant or water and forms a floating layer on the liquid surface. This not only shortens coolant life but also causes bacterial growth, foul odors, corrosion, and poor machine performance. The solution? Oil skimmers—and among the most popular types is the Belt Type Oil Skimmer. It is widely used in machine shops, automotive manufacturing, power plants, chemical processing, and wastewater treatment facilities. A belt oil skimmer is a continuous and automatic oil removal system that uses a rotating belt to pick up floating oil from the liquid surface and discharge it into a collection container. It is simple, robust, and cost-effective. This guide will explain everything you need to know about belt-type oil skimmers—their working principle, components, benefits, installation, maintenance, and industrial applications.