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Spherical Bearings

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Introduction:

Although its basic performance should be similar to that of deep groove ball bearings, but because these bearings are mostly used in relatively rough machinery, the installation and positioning are not accurate enough, the axis of the shaft and the seat hole is poorly aligned, or the shaft is long and deflected In the case of large grades, and the accuracy of the bearing itself is not high enough, and some structures are relatively rough, the actual performance of the performance is relatively discounted for deep groove ball bearings of the same specifications. For example: Outer spherical ball bearings with top wires are used for through-shafts with poor rigidity and large deflections. This bearing has sealing rings on both sides to prevent the invasion of dirt tightly.

Appropriate amount of lubricant, no need to clean before installation, no need to add lubricant, when the top screw on the protruding end of the bearing inner ring is tightened on the shaft. The allowable axial load must 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 outer spherical ball bearing with a tapered hole is a tapered hole with a 1:12 taper, which can be directly mounted on a tapered shaft, or mounted on an optical shaft without a shoulder by means of a fixed bushing, and the bearing clearance can be fine-tuned.

Outer spherical bearings are preferably used in applications that require 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 with radial loads. Generally, it is not suitable to bear axial loads alone. This type of bearing can be installed with an inner ring (with a full set of rollers and retainers) and an outer ring. This kind of bearing does not allow the shaft to be inclined with respect to the housing, and it will generate additional axial force under the radial load. The axial clearance of this kind of bearing has a great bearing on 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 easily damaged. Therefore, special attention should be paid to adjusting the axial clearance of the bearing during installation and operation. If necessary, it can be installed with interference to increase the rigidity of the bearing.

 

classification:

Outer spherical ball bearings can be divided into three categories according to the cooperation method with the shaft:

1. The code of the top wire outer spherical ball bearing is: UC200 series (light series), UC300 series (heavy series), and deformation products UB (SB) 200 series. If the operating environment is small, the UC200 series is usually selected, and vice versa Then use the UC300 series. Usually, there are two top wires on the outer spherical ball bearing, and the included angle is 120 °. Its characteristic is that when it cooperates with the shaft, the top wire is used to press on the shaft, and then it has a fixed effect, but it cooperates. Environmental needs need to be small in scale. This kind of spherical ball bearing is widely used, and it is widely used in various manufacturing industries such as textile machinery and ceramic machinery.

Second, the spherical ball bearing with taper Its code is: UK200 series, UK300 series. This type of outer spherical ball bearing has a taper bore of 1:12 share inner diameter. It must be used in cooperation with an adapter sleeve when used. The characteristics of this type of outer spherical ball bearing are: it can accept larger load. Because the inner diameter of the same type of adapter sleeve is smaller than that of the outer spherical ball bearing with a top wire, for example, the inner diameter of the outer wire ball bearing UC209 is 45 mm, and the diameter of the shaft used in cooperation with it is 45 mm. If it is replaced with a tapered outer spherical ball bearing, you can only choose an adapter sleeve with an inner diameter of 45mm, and the tapered outer spherical ball bearing that cooperates with a 45mm adapter sleeve is only UK210 (Of course, if it fits higher, you can choose UK310). Therefore, the agreement accepted by UK210 should be much larger than that of UC209.

Third, the spherical ball bearing with migraine sleeve Its code names are: UEL200 series, UEL300 series, SA200 series. The main feature of this type of spherical ball bearing is that it has a certain degree of partial pain on the upper end of the bearing, and a partial pain sleeve with the same degree of partial pain cooperates with it. This type of bearing can also be said to be a special bearing. Since it is mainly used on agricultural machinery (harvesting machines, straw returning machines, threshers, etc.), this type of spherical ball bearing is mainly used in layouts with a stronger beating. The cooperation of the layout can effectively reduce the strong beating.


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