Self-aligning ball bearings
Self-aligning ball bearing, also known as a self-aligning ball bearing, has two rows of ball bearings, the inner ring has two rolling sides and the outer ring is a spherical roller face with the center of the ball face coinciding with the drive shaft. . Therefore, the axis of the bearing and the ball may rotate around this center without causing any additional stress. This allows the bearing to work under conditions where there is a slight deviation between the cylinder face of the inner ring and the outer ring (machining or assembly error). Therefore, they are named self-selected bearings. These balls can often have taper holes that can be used to assemble using a cuff. The international symbol for this type of bearing usually has 4 codes starting from 1 or 2.
This is a self-aligning 2-row ball bearing with 2 rows of ball bearings attached to a rack and runs on 2 grooves of the shove in the bearing. The unit unifies the two rows of marbles and the inner shift can move freely compared to the outer shift due to the contact surface of the two rows of marbles with the free outer shift and the outer hem curved. With such design allows this bearing can bear quite high loads (due to the 2-row design of the ball) in addition they also allow the bearings to move at a relatively fast speed compared to ball bearings na, speed inside about 3,800 - 38,000 RPM depending on the size of the bearing (this is the basic difference between this bearing and a 2-row cylindrical roller bearing (na na ball bearings).