Roller bearing is a kind of rolling element bearings that carries loads by placing a number of rolling elements. The rolling elements between the two rings are called races. The races causing much less frictions than sliding elements.

A rolling element rotary bearing uses a shaft in a much larger hole, and cylinders called "rollers" tightly fill the space between the shaft and hole. As the shaft turns, each roller acts as the logs in the above example. However, since the bearing is round, the rollers never fall out from under the load. 

Unlike ball bearings, the roller bearings can carry very large loads. The rolling elements can be designed larger to maintain heavy loads.

Therefore, roller bearings have a wide range of shapes and sizes and can be customized for special situations. Similarly, the use of flanges, cages and multi-row bearings can improve performance to meet specific application needs.

Spark Bearings (Aka, Wuxi Spark Bearings Co.,Ltd Co., Ltd) is a professional bearings provider with over 10 years experience in producing high quality ball bearings and roller bearings with large categories including spherical roller bearings, cylindrical roller bearings, tapered roller bearings, deep groove ball bearings, self-aligning ball bearings, angular contact ball bearings and thrust ball bearings.