Which type of bearing is typically used to allow for shaft misalignment?

Spherical roller bearings are specifically designed to accommodate shaft misalignment. These bearings have asymmetrical races and a design that allows for angular misalignment between the inner and outer rings. This feature is particularly beneficial in applications where the shaft may not be perfectly aligned due to installation tolerances or operating conditions.

One of the key advantages of spherical roller bearings is their ability to handle both radial and axial loads while allowing for some angular displacement. This capability extends the lifespan of the bearing by reducing the stresses that arise from misalignment, thereby minimizing wear and preventing premature failure.

In contrast, ball bearings and needle bearings are more rigid in design and do not effectively accommodate angular misalignment. Plain bearings can provide some degree of flexibility but typically rely on lubrication and may not be as durable under misaligned conditions as spherical roller bearings. Therefore, spherical roller bearings are the preferred choice in scenarios where misalignment might occur, making them essential in various industrial applications.