What is a key advantage of using a double-row ball bearing in machinery?

• A. Higher speed capability
• B. Increased load carrying capacity
• C. Lower friction coefficient
• D. Compact size

Answer: (B)

Using a double-row ball bearing in machinery provides a key advantage of increased load carrying capacity. This design incorporates two rows of balls, which allows for distributing the load over a larger area compared to single-row bearings. As a result, double-row ball bearings can handle greater radial loads and are capable of supporting axial loads better than their single-row counterparts. This makes them ideal for applications where high load capacities are essential, contributing to the overall durability and reliability of the machinery in which they are used. The distribution of load across two rows also helps reduce stress and prolongs the bearing's lifespan.