1 payload size, direction and nature: ball bearings suitable for light load to bear, roller bearings suitable for heavy load and impact load. When NSK Bearings subjected to pure axial load, generally used in the thrust bearing; when NSK Bearings subjected to 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 small 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 larger, the larger the contact angle can be used angular contact ball bearings and tapered roller bearings, or the selection of 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 bearing types 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 NSK bearing preload to improve the rigidity of the bearing; Furthermore, the design of the bearing support in consideration of the combination and arrangement of the bearing can also improve the support rigidity of the bearing.
4-aligning performance and installation error: NSK bearing into the working position, it is often due to manufacturing errors caused by poor installation and positioning. At this time often due to shaft deflection and thermal expansion generated and other reasons, the bearing to put too much load, cause early damage. Automatic self-aligning bearing can overcome defects caused by the installation error, so it is suitable for such purpose bearings.
5 Installation and Removal: Tapered roller bearings, needle roller bearings and tapered roller bearings, inner and outer rings are separable bearing type (the so-called separation of bearings), easy installation and removal.
During operation, the need to correct re-lubrication, and improve its performance. NSK bearing lubrication method, grease and oil lubrication points. In order to play good NSK Bearings function, first, to choose the right conditions, the lubrication method used for the purpose. If you only consider lubrication, oil lubrication dominant. However, the structure can be simplified knowledge surrounding the bearing grease.
Product Model | Inside Diameter | Outside Diameter | Thickness |
7234B NSK | 170 | 310 | 52 |
7234A NSK | 170 | 310 | 52 |