Spherical Bearing

The outer spherical ball bearing is actually a modification of the deep groove ball bearing. Its characteristic is that the outer diameter surface of its outer ring is spherical, which can be fitted into the corresponding concave spherical surface of the bearing seat to play the role of self-alignment. Outer spherical bearings are mainly used to bear combined radial and axial loads, mainly radial loads, and are generally not suitable for bearing axial loads alone.

Although its basic performance should be similar to that of deep groove ball bearings, since this kind of bearings are mostly used in relatively rough machinery, the installation and positioning are not accurate enough, and the axis alignment between the shaft and the seat hole is poor , or the shaft is long and the deflection is large, etc., and the precision of the bearing itself is not high enough, and some structures are relatively rough, so the actual performance of the performance is quite discounted compared with the deep groove ball bearings of the same specification. For example: the outer spherical ball bearing with top wire is applied to the through shaft with poor stiffness and large deflection. This kind of bearing has sealing rings on both sides, which can strictly prevent the intrusion of dirt. It has been filled with an appropriate amount of lubricant before leaving the factory and does not need to be cleaned before installation. , No need to add lubricant, when the jackscrew on the protruding end of the inner ring of the bearing is tightened on the shaft. The allowable axial load shall not exceed 20% of the rated dynamic load.

The performance of the outer spherical ball bearing with eccentric sleeve is basically the same as that of the outer spherical bearing with top wire, except that the top wire is not on the inner ring, but on the eccentric sleeve. The inner hole of the tapered outer spherical ball bearing is a tapered hole with a taper of 1:12, which can be directly installed on the tapered shaft, or installed on the optical shaft without shoulder by means of an adapter bush, and the bearing clearance can be fine-tuned. Insert spherical bearings are preferred for occasions requiring simple equipment and parts, such as agricultural machinery, transportation systems or construction machinery.

It is mainly used to bear the combined radial and axial loads, mainly radial loads. Generally, it is not suitable to bear axial loads alone. This kind of bearings can be installed with inner rings (with a full set of device) and the outer ring. This kind of bearing does not allow the shaft to tilt relative to the housing, and will generate additional axial force under the radial load. The size of 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, special attention should be paid to adjusting the axial clearance of the bearing during installation and operation. If necessary, pre-interference installation can be used to increase the rigidity of the bearing.