NSK bearings used in machine tool bearing paired with several main aspects:
1, NSK bearing rigidity: load bearing, bearing rings and rolling contact will generate elastic deformation, deformation and load ratio to determine the bearing stiffness is proportional to the size of. Generally through the bearing preload, to increase the bearing stiffness; in addition, design of bearings, bearing combination and arrangement, can improve the bearing support stiffness.
2, NSK bearing load magnitude, direction and nature: ball bearing for the under light load, suitable for roller bearings under heavy load and shock load. When subjected to pure axial load of rolling bearing, thrust bearing the general use of pure radial load rolling, generally used in deep groove ball bearings or cylindrical roller bearing rolling pure radial load at the same time, there are few deep groove ball bearings, angular contact ball bearings, tapered roller bearings and axial load self-aligning ball or spherical roller bearings, may the axial load is large, a large contact angle, angular contact ball bearings and tapered roller bearings, or radial bearing and thrust bearing are combined together, which especially need a very high axial load or larger axial rigidity choice, especially when appropriate.
3, NSK bearing speed: because NSK is very different bearing types. Under normal circumstances, small friction, less heat is used in high-speed bearings. Their working conditions, the design to the rolling speed is lower than the limit.
Considering the load factors should pay attention to the life of the bearing is more sensitive to load matching speed, so for the multistage transmission shaft, if possible, should be the great series of the deceleration in later; for the main shaft bearing, if possible, the appropriate allocation of load action point and the distance between the bearing support, and strive to reduce the spindle bearings load, and strive to NSK main bearing load is stable, to avoid the shock and vibration, which requires the shape and position accuracy of the installation position of the bearing clearance is high enough, NSK bearings and choose the correct installation of good, fine bearing.