there is little axial load

Many different types of rolling bearings, the choice may consider the following factors, which to choose.
1. Payload size, direction and nature: ball bearings suitable for light load to bear, roller bearings suitable for heavy load and impact load. When subjected to pure axial load bearing, thrust bearing is generally used; when rolling under pure radial load, generally used in deep groove ball bearings or cylindrical roller bearings; when rolling under pure radial load at the same time, there is little axial load, the choice of deep groove ball bearings, angular contact ball bearings, tapered roller backing bearings and self-aligning ball or spherical roller bearings; when the axial load is large, the choice of the contact angle larger angular contact ball bearings and tapered roller bearings, or use radial bearings and thrust bearings together, which in very high axial loads or special requests, especially when there are large axial rigidity adapt appropriate.
2. Permissible speed: Due to different types of bearings are very different. Generally, the friction is small, less heat bearing suitable for high speeds. Rolling in the design should strive to lower the speed limit working conditions.
3. Rigidity: bearings under load, the bearing rings and rolling elements contact point will produce elastic deformation, the deformation is proportional to the load, the ratio determines the size of the bearing stiffness. Generally by bearing preload to improve the rigidity of the bearing; addition, the design of the bearing support, considering the combination and arrangement of the bearing can also improve the support rigidity of the bearing.