Aligning ball bearings are bearings equipped with spherical balls between the inner ring and the outer ring with a spherical raceway. The center of curvature of the outer ring raceway surface is consistent with the center of the bearing, so it has the same alignment function as a self-aligning ball bearing. When the shaft or housing deflects, it can be automatically adjusted without increasing the burden on the bearings. Spherical roller bearings can bear radial loads and axial loads in two directions. It has large radial load capacity and is suitable for situations with heavy loads and impact loads. Bearings with a tapered bore in the inner ring can be installed directly. Or use an adapter sleeve or disassembly barrel to install it on the cylindrical shaft. The cage uses steel plate stamping cage, polyamide forming cage and copper alloy machined cage. Aligning ball bearings have two structures: cylindrical hole and tapered hole. The cage is made of steel plate, synthetic resin, etc. Its characteristic is that the outer ring raceway is spherical and has automatic alignment, which can compensate for the errors caused by non-concentricity and shaft deflection. However, the relative inclination of the inner and outer rings shall not exceed 3 degrees. [1] It can withstand large radial loads and can also withstand certain axial loads. The outer ring raceway of this type of bearing is spherical, so it has self-aligning performance. When the shaft is bent or tilted due to force and the relative tilt between the center line of the inner ring and the center line of the outer ring does not exceed 1° to 2.5°, the bearing can still work. . There are two types of inner holes of self-aligning ball bearings: cylindrical and conical. The taper of the conical inner hole is 1:1 2 or 1:30. In order to enhance the lubrication performance of the bearing, an annular oil groove and three oil holes are processed on the outer ring of the bearing.