| Inner Diameter | 40 mm |
| Outer Diameter | 90 mm |
| Thickness | 23 mm |
| Model NO. | 21308 / 21309 |
| Structure | Spherical Roller Bearing |
| Load Direction | Radial Bearing |
High-precision spherical roller bearings with double-row design, suitable for heavy radial and axial loads. Available in P0–P2 precision grades, C0–C4 clearance options, and multiple cage materials (iron, copper, nylon). Lubrication: grease or oil. Seals: ZZ, 2RS, or open. Made in China, compliant with HS Code 8482300000.