Which bearing type is a housing with mounting feet that allows perpendicular mounting to a surface?

• A. Pillow block
• B. Flange
• C. Ball
• D. Needle

Answer: (A)

A pillow block is a mounted bearing unit that combines a bearing inside a housing with two mounting feet on the base. Those feet let you bolt the unit to a flat surface, positioning the bore so the shaft remains perpendicular to that surface. This configuration provides a rigid, easy-to-align support for a shaft in many machines or conveyors, making it the go-to choice when you need a self-contained housing with mounting feet.

Flange bearings attach directly via a flange to a surface and don’t have the full base feet that extend away from the surface, so they aren’t the same housing-with-feet arrangement. Ball and needle refer to bearing types rather than the mounting housing with feet.