The SKF 1218KC3 is a genuine SKF self-aligning ball bearing designed for applications where angular misalignment may occur. It features a 90mm tapered bore (1:12 taper), a 160mm outer diameter, and a 30mm width. This bearing is specified with C3 internal radial clearance, which is greater than normal, making it suitable for conditions involving higher operating temperatures or where shaft expansion is anticipated. Its robust construction ensures reliable performance in demanding industrial environments.