What increases the radial load capacity of a ball bearing?

The increase in radial load capacity of a ball bearing is primarily influenced by the larger number of balls in the bearing assembly. When more balls are incorporated, each ball is able to share the load more effectively, distributing the stress across a greater surface area. This results in an overall increase in the load carrying ability of the bearing.

Additionally, the arrangement of these balls allows for better support and stability under radial loads. This means that as the number of balls increases, the bearing can handle higher loads without experiencing excessive stress on individual components, which can lead to premature wear or failure.

Higher lubrication quality, decreased friction, and increased temperature tolerance certainly contribute to the overall performance and longevity of a bearing, but they do not directly enhance the radial load capacity in the same way that increasing the number of balls does. While effective lubrication reduces wear and friction, and better temperature tolerance can prevent overheating, they do not alter the fundamental mechanics of how load is distributed among the balls in the bearing.