This self-aligning ball bearing accommodates shaft misalignment through its spherical outer raceway, allowing the inner ring, balls and cage to swivel relative to the outer ring. Bore diameter is 50.0 mm, outside diameter 90.0 mm, width 23.0 mm, and the unit weighs 0.59 kg. The limiting speed is rated at 4400 1/min, radial internal clearance is CN (Group N), and the bearing uses a TVH cage made of glass-fibre reinforced plastic. Sealing on both sides (2RS) keeps grease in and contaminants out, so the bearing runs pre-lubricated without external relubrication under normal conditions. The plastic cage combined with the spherical raceway design suits applications where shaft deflection or housing misalignment must be tolerated without inducing additional radial load, and the CN clearance class provides standard internal play for general mounting conditions.