The self-aligning roller bearing consists of an outer ring with a spherical raceway and a double raceway inner full, one or two cages and a set of spherical rollers. Because the center of the spherical raceway of the outer ring is consistent with the center of the bearing, it has the aligning performance, and can automatically adjust the tilt or shaft deflection caused by the Angle error between the shaft and the bearing seat. Aligning roller bearings can bear large radial loads and bidirectional axial loads. Especially suitable for bearing heavy load cargo shock shock load. However, the operating speed allowed by the self-aligning roller bearing is relatively low. Aligning roller bearings in normal working conditions, the allowable Angle deviation is 1°-2.5°, if the aligning performance with a sealing device is reduced. Aligning roller bearings are mainly used in steel, mining, paper making, ships, textile machinery, coal mills, electric power and other industries in a variety of machinery and equipment, is the most widely used in the machinery industry of a class of bearings.
Aligning roller bearing Type C bearings are mostly steel plate pressed cages, and glass fiber added polyimide and other engineering plastic materials cages. Type CA bearing with brass solid cage. At the same time, in order to facilitate lubrication, an aligning roller bearing with a lubrication hole and a lubrication groove in the outer ring can be provided, and W33 is added to the bearing rear designation. An aligning roller bearing with a lubricating hole in the outer ring, adding W20 to the bearing rear designation.
Advantages:
1. Large radial load capacity. It can be installed directly or on a cylindrical shaft using a tight-fitting sleeve or assembly cylinder.
Second, can withstand a certain axial load. The outer ring raceway of this kind of bearing is spherical, and the aligning roller bearing can bear large radial load. Therefore, it has the aligning performance, and is not affected by the misalignment of shaft and bearing box or the influence of shaft deformation and deflection, and can compensate the coaxiality error
Three, with two rows of spherical rollers. The outer ring has a common concave spherical raceway, the inner ring has two concave raceways tilted at an Angle to the bearing axis, and the center of curvature of the outer ring raceway is consistent with the bearing center.
4. In addition to radial load, it can also withstand two-way axial load and its combined load. The bearing capacity is large, and it has good vibration resistance and impact resistance.
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