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Advantages of Evaporative Cooler Bearings 2010-09-16
Oiling and inspecting your Swamp Cooler or Evaporative Cooler bearings can save you major headaches and expense. On most of the commonly used Coolers, oiling the bearings is a very simple job. The majority of residential and small commercial models originally come with a bronze bearing. There are no moving parts to these bearings as there are with ball bearings. Bronze bearings are made with a sleeve of bronze inside a steel die-cast housing. The blower shaft spins inside the bronze sleeve. These type of bearings allow for a smooth, low friction motion between the two solid surfaces. The bronze portion of the bearing is generally about 1/8 to 3/16 of an inch thick and is porous for continuous lubrication. You will see an oil cup at the top of the bearing. Open the cup and then drop about 5 - 10 drops of lightweight machine oil into the oil tube. This should be done at least once a year for light Cooler use, or several times a year for heavy use. Even though ceramic bearings are relatively inexpensive they are quite durable. Often times, if you oil them regularly and the belt tension is maintained correctly, the bearings will last for the lifetime of your Evaporative Cooler.
