Which term is a Pillow Block Bearing?

• A. Pillow Block Bearing
• B. Alignment
• C. Belt Tension
• D. Lubrication

Answer: (A)

A Pillow Block Bearing is a bearing housed in a rigid block that bolts to a frame, providing a stable mount that keeps a shaft aligned and rotating smoothly. This housing makes it easy to install, replace, and maintain the bearing without disturbing other components, which is why it’s commonly used to support conveyor rollers, motors, and other rotating shafts in industrial gear. The other terms describe separate ideas: alignment is about positioning parts so the shaft runs true, belt tension is about how tight a drive belt is, and lubrication is about applying lubricant to reduce wear. Here, the focus is on the bearing unit itself and its mounting housing, which is what defines a Pillow Block Bearing.