Spherical Bearing

Spherical ball bearing is actually a variant of deep groove ball bearing, which is characterized in that the outer diameter surface of its outer ring is spherical, which can be matched into the corresponding concave spherical surface of the bearing seat to play the role of centering. Although its basic performance should be similar to that of deep groove ball bearing, this kind of bearing is mostly used in rough machinery, the installation and positioning is not accurate enough, the axis to neutral difference between shaft and seat hole, or the shaft is long and the deflection is large, and the accuracy of the bearing itself is not high enough, and some structures are also rough, Therefore, the actual performance of deep groove ball bearings with the same specifications is quite discounted. For example, the outer spherical ball bearing with jacking screw is applied to the through shaft with poor stiffness and large deflection. The two sides of the bearing are equipped with sealing rings, which can strictly prevent the invasion of dirt. An appropriate amount of lubricant has been filled at the factory. There is no need to clean or add lubricant before installation. When the jacking screw on the protruding end of the bearing inner ring is fastened on the shaft, the allowable axial load shall not exceed 20% of the rated dynamic load. Outer spherical bearings are preferred for applications requiring simple equipment and parts, such as agricultural machinery, transportation system or construction machinery. It is mainly used to bear the combined radial and axial load dominated by radial load. Generally, it is not suitable to bear the axial load alone. This kind of bearing can be installed with inner ring (with full set of rollers and retainer) and outer ring respectively. This kind of bearing does not allow the shaft to tilt relative to the housing, and additional axial force will be generated under the appointment of radial load. The axial clearance of this kind of bearing has a great relationship with whether the bearing can work normally. When the axial clearance is too small, the temperature rise is high; When the axial clearance is large, the bearing is easy to be damaged. Therefore, during installation and operation, special attention should be paid to adjusting the axial clearance of the bearing. If necessary, pre interference installation can be carried out to increase the rigidity of the bearing.