What is the difference between a roller bearing and a ball bearing?

The main difference between roller bearings and ball bearings lies in the type of rolling elements used. Roller bearings use cylindrical rollers, while ball bearings use balls. Therefore, roller bearings can carry heavier loads and are more suitable for applications with heavy loads or thrust loads.

In addition, compared with ball bearings, roller bearings usually have a higher load-carrying capacity and a lower speed rating. On the other hand, ball bearings are more suitable for applications with high speed and low to medium loads.

One of the significant differences between roller bearings and ball bearings is that roller bearings are usually more expensive than ball bearings. However, they offer several advantages, including higher load-bearing capacity and increased precision.