Which term is a type of pump bearing?

Which term is a type of pump bearing?

• A. Thrust ball bearing
• B. Single-row stiff ball bearing
• C. Spherical roller bearing
• D. Journal bearing

Answer: (B)

Pump bearings must provide rigid, precise support for the rotor while minimizing friction so the shaft stays aligned during operation. A single-row stiff ball bearing fits this need well: it’s a radial ball bearing designed for high stiffness and smooth rotation, which helps maintain shaft alignment and reduce vibration in pumps. That combination of properties makes it a common choice as a pump bearing. The other options aren’t as representative of a standard pump bearing in typical designs. A thrust ball bearing handles axial loads more than radial, and many pumps rely on radial support for the main bearing. A journal bearing is a plain bearing that relies on a lubricant film, which is a different category of bearing. A spherical roller bearing can carry heavy radial loads and misalignment but is less commonly used as the typical pump bearing due to size and mounting considerations.

Pump bearings must provide rigid, precise support for the rotor while minimizing friction so the shaft stays aligned during operation. A single-row stiff ball bearing fits this need well: it’s a radial ball bearing designed for high stiffness and smooth rotation, which helps maintain shaft alignment and reduce vibration in pumps. That combination of properties makes it a common choice as a pump bearing.

The other options aren’t as representative of a standard pump bearing in typical designs. A thrust ball bearing handles axial loads more than radial, and many pumps rely on radial support for the main bearing. A journal bearing is a plain bearing that relies on a lubricant film, which is a different category of bearing. A spherical roller bearing can carry heavy radial loads and misalignment but is less commonly used as the typical pump bearing due to size and mounting considerations.