What is an Insert Bearings?

The outer spherical ball bearing is actually a variant of the deep groove ball bearing. Its characteristic is that the outer diameter surface of its outer ring is a spherical surface, which can be fitted into the corresponding concave spherical surface of the bearing seat to achieve alignment. Insert Bearings are mainly used to bear the combined radial and axial loads, which are mainly radial loads. Generally, they are not suitable to bear the axial load alone.

Although its basic performance should be similar to that of deep groove ball bearings, since most of these bearings are used in relatively rough machinery, the installation and positioning are not accurate enough, the axis alignment between the shaft and the seat hole is poor, or the shaft is long and has deflection In large cases, the accuracy of the bearing itself is not high enough, and some structures are relatively rough, so the actual performance is significantly discounted compared to deep groove ball bearings of the same specifications. For example: an outer spherical ball bearing with a jackscrew is used for a through shaft with poor stiffness and large deflection. This 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 an eccentric sleeve is basically the same as that of the outer spherical bearing with a jackscrew, except that the jackscrew is not on the inner ring, but on the eccentric sleeve. The inner hole of the tapered bore spherical ball bearing is a tapered hole with a taper of 1:12. It can be directly installed on a tapered shaft, or installed on a shoulderless smooth shaft with the help of a tightening bushing, and the bearing clearance can be fine-tuned.

Insert spherical bearings are preferred for applications that require simple equipment and components, such as agricultural machinery, transportation systems or construction machinery.

It is mainly used to bear the combined radial and axial loads, which are mainly radial loads. It is generally not suitable to bear the axial load alone. This kind of bearing can be installed with an inner ring (with a full set of rollers and retainers) and an outer ring respectively. This kind of bearing does not allow the shaft to tilt relative to the housing, and will generate additional axial force under any 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 will be high; when the axial clearance is large, the bearing will be easily 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 performed to increase the rigidity of the bearing.