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Ceramic bearing balls can weigh up to 40% less than steel bearing balls, although this depends upon the size and material used. This will reduce centrifugal loading and skidding, so hybrid ceramic bearing balls can operate at 20% to 40% faster than other conventional bearings. This actually means that the outer race groove exerts less force inward against the ball as the bearing balls spins. This reduction in force reduces the friction and rolling resistance. The lighter ball allows the bearing to spin faster, and uses far less energy to maintain the bearing balls speed.
Ceramic hybrid bearing balls use these ceramic balls in place of steel balls. They are made with steel inner and outer rings, but ceramic bearing balls; this gives rise to their hybrid designation.
Self-aligning bearing balls are constructed with the inner ring and ball assembly contained within an outer ring that has a spherical raceway. This construction allows the bearing balls to tolerate a small angular misalignment resulting from deflection or improper mounting.