What is the working principle of metric spherical bearings?

1,213 Published by Dec 14,2018

The metric spherical bearings are actually a variant of deep groove ball bearings. The outer diameter of the outer ring is spherical. It can be fitted into the corresponding concave spherical surface of the bearing housing to adjust the center. The metric spherical bearings are mainly used to withstand the radial and axial combined loads, which are mainly radial loads. Generally, it is not suitable to bear the axial load alone.

high precission metric spherical bearings

Although the basic performance of metric spherical bearings should be similar to that of deep groove ball bearings, most of these metric spherical bearings are used in rough machines, the installation positioning is not accurate enough, and the axis alignment of the shaft and the seat hole is poor, or When the shaft length is large and the deflection is large, and the accuracy of the bearing itself is not high enough, and some structures are also rough, the actual performance of the performance is comparable to that of the deep groove ball bearing of the same specification. For example, the metric spherical bearings with top wire are applied to the through shaft with large difference in deflection. The bearing has sealing rings on both sides to prevent the intrusion of dirt. The factory has been filled with proper amount of lubricant and does not need to be cleaned before installation. No need to add lubricant, the top wire screw on the protruding end of the inner ring of metric spherical bearings is fastened on the shaft. The permissible axial load must not exceed 20% of the rated dynamic load.

metric spherical bearings with high precision

The metric spherical bearings with eccentric sleeves have essentially the same performance as the outer spherical bearings with the top wire, except that the top wire is not on the inner ring but on the eccentric sleeve. The inner bore of the metric spherical bearings is a tapered bore with a 1:12 taper that can be mounted directly on the tapered shaft or mounted on the shaft without the shoulder by means of a bushing and fine-tuning the bearing clearance.

high quality metric spherical bearings

The metric spherical bearings are preferred for applications where equipment and components are required to be simple, such as for agricultural machinery, transportation systems or construction machinery.
The metric spherical bearings are mainly used to bear radial and axial combined loads mainly for radial loads. Generally, it is not suitable to bear axial loads alone. The metric spherical bearings can be installed separately (with full set of rollers and retainers). And the outer ring. The metric spherical bearings do not allow the shaft to be tilted relative to the outer casing, creating additional axial forces under radial load. The metric spherical bearings have a large relationship with the metric spherical bearings. When the axial clearance is too small, the temperature rise is high. When the axial clearance is large, the metric spherical bearings are easily damaged. Therefore, special attention should be paid to adjusting the axial clearance of the bearing during installation and operation. If necessary, pre-interference can be installed to increase the rigidity of the metric spherical bearings.

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