Choosing an antifriction bearing

This article discusses the relationships between the various factors and bearing selection and helps the reader understand the tradeoffs involved in the various applications of antifriction bearings and suggests alternate solutions. A new toroidal roller bearing design may offer some advantages and these bearings in electric machines support and locate the rotor, keep the air gap small and consistent, and transfer loads from the shaft to the motor frame. For heavy loads and where shaft diameters are large, roller bearings are usually the more appropriate choice. By utilizing this new toroidal bearing, it may now be possible for paper and pulp industry to stock one motor that is suitable for either coupled or belted loads