The purpose of the bearing cooler is to remove the heat generated in the lubricating oil by the operation of the machine. Typically water is used as the cooling fluid for a Bearing Cooler. Common Bearing Cooler applications are in large motors, hydro electric generators (thrust or guide bearings), compressors and any other high speed rotating equipment. Bearing coolers are varied in type and can take on many forms. They are seldom “standard designs” so manufacturing replacement coolers requires knowledge, experience, and flexibility. Below is a list of common bearing cooler designs.