The best way to install a plain bearing in a bearing housing is using which tool?

• A. Hammer
• B. Arbor press
• C. Heat
• D. Puller

Answer: (B)

The main idea is seating a plain bearing with controlled, even force so the bore stays concentric and the bearing edges aren’t damaged. An arbor press provides that kind of mechanical, uniform pressure along the bearing’s axis, often with a mandrel or drift to protect the inner race and ensure proper alignment as you press it into the housing. This minimizes shock and distortion compared to other methods.

Using a hammer introduces uncontrolled impacts that can crush or deform the bearing edge, create burrs, or misalign the bore. Heating the parts can cause uneven expansion, distort tolerances, or degrade lubrication, leading to poor fit or damage. A puller is designed to remove a bearing, not to seat one, and can apply uneven forces that harm the bearing or housing. Thus, the best tool for installing a plain bearing is an arbor press.