What tool is commonly used for installing tight-fitting bearings?

A stationary hydraulic press is the preferred tool for installing tight-fitting bearings due to its ability to provide a controlled and consistent pressure. This is important because bearings often require precise installation to ensure they fit correctly and function efficiently, preventing issues such as misalignment or uneven wear. The hydraulic press can generate significant force, allowing for safe installation without damaging the bearing or associated components.

In contrast, while pneumatic hammers and manual presses may be used in certain contexts, they do not offer the same level of control and even pressure distribution. A measuring caliper, on the other hand, is used for measurement rather than installation and would not be appropriate for this task. Thus, the stationary hydraulic press stands out as the most reliable option for this purpose.