1215 K Self-Aligning Ball Bearing

Spherical ball bearings feature two rows of balls that share a spherical rolling raceway on the outer ring. The bearings are self-aligning, allowing for minor parallel misalignments between the shaft and the bearing housing. They are particularly suitable for bearing applications where parallel misalignment may arise due to installation errors or shaft bending. Spherical ball bearings accommodate light to medium radial loads as well as high speeds, making them widely used in applications such as fans.

Spherical ball bearings are available in sealed or open designs, with cylindrical or conical bores.

Common suffix markings:
- C2, C3 = clearance class (normal clearance without marking, C2 smaller than normal clearance, C3 larger than normal clearance)
- TN9, M = cage material (steel cage without marking, TN9 = polyamide, M = brass)
- 2RS1 = rubber seal on both sides
- K = conical bore (cylindrical bore without marking)