This self-aligning ball bearing compensates for shaft misalignment thanks to its spherical outer raceway, allowing the inner ring with balls and cage to swivel relative to the outer ring. Bore diameter is 90.0 mm, outside diameter 160.0 mm, and width 30.0 mm. The bearing uses a TVH cage made of glass-fibre reinforced plastic, which reduces friction and mass compared to metal cages. Radial internal clearance is CN (Group N), the standard clearance class. Limiting speed is rated at 4550 1/min, with a reference speed of 4850 1/min. Mass is 2.52 kg. The Z bore type and plastic TVH cage design make this bearing suited for applications where shaft deflection or housing misalignment must be absorbed without inducing additional radial stress on the raceways. The CN clearance class provides standard operating clearance, suitable for typical mounting conditions without preload. Dimensionally and constructionally, this bearing corresponds to KOYO 1218, MRC 1218, RHP 1218, and SKF 1218.