Choosing between a greased and oiled bearing depends entirely on your speed and operating conditions. Use grease for heavy loads and low-to-moderate speeds, as it stays in place, requires less maintenance, and provides excellent sealing against contaminants. Use oil for extreme high-speed applications or high temperatures, as it offers superior cooling and lubrication, though it requires frequent maintenance to prevent leaks. Oiled bearings are typically found in free-wheeling applications. Powered conveyor applications characteristically work best with a greased bearing.
