Types Self-aligning Roller Bearing

The outer spherical ball bearing is actually a variant of the deep groove ball bearing. It is characterized by the fact that the outer diameter surface of its outer ring is spherical and can be fitted into the corresponding concave ball surface of the bearing seat to play a central role. External spherical bearings are mainly used to withstand radial and axial combined loads based on radial loads. Generally, it is not appropriate to bear axial loads alone.

Although its basic performance should be similar to that of deep groove ball bearings, because most of these bearings are used in relatively rough machinery, the installation and positioning are not accurate enough, and the axis of the shaft and the seat hole is neutral. Or in the case of long shaft and large deflection, etc., and the accuracy of the bearing itself is not high enough, some structures are also rough, so the actual performance of the performance of the same specifications of the deep groove ball bearings to make a considerable discount. For example, an outer spherical ball bearing with a top wire is applied to a general shaft with large stiffness and deflection. This type of bearing has two sealing rings, which can strictly prevent the intrusion of dirt and is filled at the factory.

External ball bearings

External ball bearings

Appropriate amount of lubricant, do not need to be cleaned before installation, do not need to add lubricant, the top screw on the protruding end of the bearing inner ring is tightened on the shaft. The permitted axial load must not exceed 20 % of the amount of fixed load.

External spherical ball bearings with eccentric sleeves have the same performance as outer spherical bearings with top wires, except that the top wire is not on the inner ring but on the eccentric sleeve. The inner hole of the conical outer spherical ball bearing is a conical hole with a taper of 1:12, which can be mounted directly on the conical axis, or mounted on the non-axle shoulder optical axis by means of a compact Bushing, and the bearing clearance can be fine-tuned.

External spherical bearings are preferred for situations that require simple equipment and parts, such as agricultural machinery, transportation systems, or construction machinery.

It is mainly used to withstand radial and axial combined loads based on radial loads. Generally, it is not appropriate to bear axial loads alone. Such bearings can be installed with inner rings(with full rollers and maintainers) and outer rings. This type of bearing does not allow the shaft to tilt relative to the shell and will generate additional axial force under radial load appointment. The size of the axial clearance of the bearing has a great relationship with the normal operation of the bearing. When the axial clearance is over hours, the temperature rises higher; When the axial clearance is large, the bearing is easily damaged. Therefore, during installation and operation, special attention must be paid to adjusting the axial clearance of the bearing, and if necessary, it can preload and preload the installation to increase the rigidity of the bearing.