Bearings for fans
Bearing arrangements for fans
The large variety of fans can be classified in different ways. Generally, there are two categories that are based on the fan's directions of airflow or gas moved: centrifugal fans and axial flow fans. This article, a reprint from the 1982 SKF "S-Range" handbook, covers the following areas as they relate to fans: bearing arrangements and lubrication. Guidelines for fan load calculations are adapted from the later SKF PI 113 E publication, 1987. The bearing designs and housings are subjected to change. Recommended bearing arrangements with spherical and CARB bearings are not included; see also SKF 4417 publication, "Self-Aligning Bearing Systems", 2000.