Anchor bearing is described as which component in a shaft assembly?

• A. A plain bearing.
• B. A roller bearing at the end of the shaft.
• C. A hub with gear teeth.
• D. A brass bushing that sits in the middle of a shaft.

Answer: (D)

Anchor bearings provide a fixed support that locates the shaft in the housing and prevents axial movement. A brass bushing placed in the middle of the shaft assembly serves this role because it is a plain bearing that delivers a smooth, low-friction interface between the rotating shaft and its housing. The bushing anchors the shaft position and ensures proper alignment while absorbing radial loads, which is exactly what an anchor bearing is meant to do. It’s not a roller bearing (which uses rolling elements and is used for different load scenarios), not a hub with gear teeth (which is for power transmission), and not simply a different plain bearing placed elsewhere—the midshaft brass bushing fits the anchoring function.