What is a sleeve bearing fan ?
Sleeve bearing is a kind of bearing containing oil or lubricant within a friction contact when fan is rotating. The friction contact between sleeve bearing and the shaft is a face friction. The face friction will create higher noise levels and temperature. The higher the temperature caused by the friction, the greater the possibility foroil leakage. This causes the contact of the bearing to become rough and dry when the oil leaks after a certain period time. Furthermore, the uneven contact usually results in high temperature, abnormal noise and this can cause a malfunction on the fan. The lifespan ofsleeve bearing fan is approximately 20K to 30K hours or 1/2 of the lifespan of ball bearing fans.
