About pump bearing lubrication

For water pump bearings, lubrication is an important issue for performance. The suitability of the lubricant or lubrication method will greatly affect the life of the bearing. If the bearing is made of high grade grease, it can run for 15,000 hours or two years under normal operating conditions.

For pumps with a motor power greater than 18.5 kW or under adverse conditions such as high ambient temperature, high air humidity, high dust, and aggressive industrial environment, the bearings should be inspected in advance, and if necessary, 5,000 hours of grease replacement can be arranged. The amount of grease filling varies with the structure and volume of the casing, and is generally filled to 1/3-1/2 of the volume. When the filling amount is too much, the grease deteriorates, ages and softens due to stirring and heating.