When installing a bearing with a press fit onto a shaft, where should the pressure be applied?

When installing a bearing with a press fit onto a shaft, the pressure should be applied to the inner race of the bearing. This approach is crucial because the inner race is designed to rotate with the shaft, while the outer race remains stationary within the housing.

Applying pressure to the inner race ensures that the bearing is seated correctly on the shaft without causing damage to the bearing itself. If pressure were applied to the outer race instead, it could lead to deformation of the rolling elements or the cage, potentially compromising the bearing's integrity and functionality.

In essence, focusing the application of force on the inner race simplifies installation and minimizes the risk of damaging the bearing, which is critical for maintaining optimal performance and longevity in mechanical systems.