thrust bearing is generally used

In considering the elastic hydrodynamic lubrication is proposed based on a high-speed ball bearing cage vibration response model, the establishment of the cage kinetic equations applied this model on a certain type of aircraft engine main bearing retainer simulation calculations show the analysis showed that the fatigue fracture of the cage of the important reasons is high resonance and impact of the role of the transition process.
Bearing cage as the main components of the bearing and the whole performance of power transmission systems have an important impact. Ordinary ball bearing low speed in the cage generally not damaged for aviation turbojet engine main bearing manufacturer  its DN (diameter and rpm multiplied by the number) values ​​up to 3 × 1 0 6, vibration and fatigue fracture of the cage to become a fatal problem affecting flight safety at home and abroadPayload 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 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.