For full complement cylindrical roller bearings, the contact stress between the roller end face and the rib must be taken into account, which can be calculated with the relevant formula. One of the most commonly used design methods for full complement cylindrical roller bearings is that the end face of the roller is flat, and there will be an arc chamfer where it connects with the convex part of the shape of the roller, and the rib can also be flat. part. However, when a thrust load is required between the roller end face and the rib of a full complement cylindrical roller bearing, the rib is sometimes designed as a tapered surface. In this case, the chamfer of the roller will be in contact with the rib, and the angle between the rib and the radial plane is called the rib inclination. In addition, the roller end face of the full complement cylindrical roller bearing can also be designed as a spherical surface, so that the spherical end face of the roller is in contact with the inclined rib. This structure helps to improve lubrication, but reduces the guide of the rib to the roller. ability. In this case, the skew of the rollers must be controlled by the cage to ensure the normal operation of the bearing. For ease of calculation, it can be assumed that the radius of the sphere is equal to the radius of the spherical end face of the roller, while the radius of the cylinder can be approximated by the radius of curvature of the tapered rib at the theoretical contact point. Contact stresses and deformations can be calculated based on known elastic contact loads, material properties of the rollers and ribs, and contact geometry parameters. However, this method calculates that the contact stress between the roller end face and the rib of the full complement cylindrical roller bearing can only be approximated, because the liquid end face and the rib do not satisfy the assumption of half space. Also, the radius of curvature of the tapered rib is not constant, but varies along the contact width. Therefore, this method is only suitable for the contact between the complete spherical liquid end face and the conical rib. The connection and difference between tapered roller bearings and cylindrical roller bearings: Most of the bearings are similar, and it is difficult to find the difference if you do not observe carefully, such as tapered roller bearings and cylindrical roller bearings. Although their rolling elements are all rollers, there are still differences, so they will be adapted to different occasions. The outer ring of a tapered roller bearing is separable, so it is a separable bearing, so it is usually easier to install and operate. During the application process, the tapered roller bearings bear axial and radial loads to ensure the normal operation of machinery and equipment. When a cylindrical roller bearing without flange or ring is used, although it can bear a large radial force, it can only bear radial force, not axial force; while tapered roller bearings can accommodate radial force and Axial force, it can be seen that the bearing range of the two is different. The single-flange cylindrical roller bearing is different. It can withstand radial force and axial force, but it can also withstand axial force on both sides. Double-row multi-row tapered roller bearings can accommodate radial and axial forces on both sides. Whether they are single-row cylindrical roller bearings, double-row cylindrical roller bearings, cylindrical roller bearings with flanged rings, or tapered roller bearings, they are fast. But the difference is that the accuracy of single-row and double-row cylindrical roller bearings is better than that of single-row tapered roller bearings. Precision tapered roller bearings, cylindrical roller bearings, and tapered roller bearings are much more accurate than other bearings.
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