Spherical taper roller bearings have double rows of rollers, with one shared spherical raceway on the outer ring and two raceways that are tilted at an angle relative to the bearing axis on the inner ring. This clever construction gives it self-aligning properties, making it less affected by errors in the angle between the shaft and the bearing housing or shaft deflection. It is suitable for situations where installation errors or shaft deflection cause angular errors. In addition to being able to withstand radial loads, spherical taper roller bearings can also withstand bi-directional axial loads. The inner bore of the bearing is available in two types: cylindrical and tapered. The tapered bore has two taper angles of 1:30 and 1:12. This tapered bore bearing can be easily and quickly mounted on a shaft or a stepped machine shaft by using a tight-fit sleeve or a loose-fit sleeve.
Mainly applicable cage types: stamped steel reinforced cage, stamped steel cage, glass fiber reinforced polyamide cage, machined brass two-piece cage, and machined brass one-piece cage. The same structure may have different codes on the bearing.
Main uses: paper machinery, speed reducers, railway vehicle axles, rolling mill gearboxes, rolling mill rolls, crushers, vibrating screens, printing machinery, woodworking machinery, various industrial speed reducers, and vertically mounted self-aligning bearings.
Spherical taper roller bearings have cylindrical roller bearings with tapered rollers between the two rows of inner races, while the outer raceway is a spherical surface. The curvature center of the outer ring raceway surface is the same as the bearing center, so it has the same self-aligning function as the self-aligning ball bearing. It can automatically adjust the load and the bi-directional axial load when the shaft and the housing are deflected. As an important fitting of many well drilling fishing tools, it can withstand large radial loads and is suitable for heavy loads and impact loads. The inner ring has a tapered bore and can be directly mounted or installed on a cylindrical shaft with a tight-fit sleeve or a detachable sleeve. The cage is made of stamped steel, polyamide, or copper alloy.
For self-aligning bearings, when installing bearings with shafts into the housing shaft hole of a mud pump module or other machines, a middle mounting ring can be used to prevent the outer ring from tilting or rotating. It should be noted that some sizes of self-aligning ball bearings have balls protruding from the side of the bearing, so the middle mounting ring should be concave to prevent damage to the balls. Large amounts of bearings are generally installed using mechanical or hydraulic press-in methods.
For separable bearings, the inner and outer rings can be installed separately, which simplifies the installation process, especially when both the inner and outer rings require interference fits. When inserting the shaft with the inner ring already installed into the bearing housing containing the outer ring, make sure to check if the inner and outer rings are properly aligned to avoid scratching the bearing raceway and rolling parts. If cylindrical and needle roller bearings use an inner ring without a flange edge or an inner ring with one flange edge, it is recommended to use an installation sleeve.
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