Which type of bearing consists of two rows of balls and can support both radial and axial loads?

• A. Single row ball thrust bearing
• B. Cylindrical roller bearing
• C. Double-row ball bearing
• D. Spherical roller bearing

Answer: (C)

A double-row ball bearing is designed with two rows of balls, allowing it to handle both radial and axial loads simultaneously. This configuration provides greater load-carrying capacity compared to single-row bearings, making it ideal for applications where both types of loads are present. The presence of two rows also enhances stability and reduces the risk of misalignment, which can occur in single-row configurations.

In comparison, a single row ball thrust bearing only supports axial loads and is not suitable for applications that involve significant radial forces. A cylindrical roller bearing primarily handles radial loads and is not effective in supporting axial loads due to its design. Lastly, a spherical roller bearing, while it can accommodate misalignment and offers high radial load capacity, is typically used for heavier radial loads and may not support axial loads as effectively as a double-row ball bearing.

Hence, the choice of a double-row ball bearing is the best for applications requiring the support of both radial and axial loads, illustrating its versatility and effectiveness in various mechanical systems.