Spherical Roller Bearings

Self aligning roller bearing has two rows of rollers, which mainly bear radial load and axial load in either direction. It has high radial load capacity, especially suitable for working under heavy load or vibration load, but can not bear pure axial load. The outer race of this kind of bearing is spherical, so its centering performance is good and can compensate the coaxiality error.
There are two rows of symmetrical spherical rollers, the outer ring has a common spherical raceway, and the inner ring has two raceways inclined at an angle to the bearing axis, which has good centering performance. When the shaft is bent or installed eccentrically, the bearing can still be used normally. The centering performance varies with the bearing size series. Generally, the allowable centering angle is 1 ~ 2.5 degrees, This type of bearing has large load capacity. In addition to bearing radial load, the bearing can also bear axial load with two-way action, and has good impact resistance. Generally speaking, the allowable working speed of self-aligning roller bearing is low.
Self aligning roller bearings are divided into symmetrical spherical roller and asymmetric spherical roller according to the shape of roller section. Asymmetric self-aligning roller bearings are early products and mainly serve the maintenance of the main engine. Symmetrical self-aligning roller bearings are rarely used in the new design of the main engine. The internal structure has been comprehensively improved and optimized, Compared with the self-aligning roller bearing produced in the early stage, it can bear greater axial load. The operating temperature of this kind of bearing is lower, so it can meet the requirements of higher speed. According to whether the inner ring has retaining edge and the cage used, it can be divided into type C and type ca. the characteristics of type C bearing are that the inner ring has no retaining edge and adopts steel plate stamping cage, CA Tyrion bearing is characterized by retaining edges on both sides of the inner ring and turning solid cage.
Self aligning roller bearings are divided into cylindrical bore and conical bore. Installed on the matching set sleeve, it becomes the rear code K + H and K30 + H bearings.
This kind of bearing can be installed on the optical shaft without shaft shoulder, and is suitable for occasions where the bearing needs to be installed and disassembled frequently. In order to improve the lubrication performance of the bearing, an annular oil groove is turned on the outer ring of the bearing and three evenly distributed oil holes are drilled, with the rear code of W33.