K81228M bearings ( 140 mm x 200 mm x 19 mm) have the advantages of extremely high axial load capacity, high rigidity, compact axial structure, and a detachable design for easy installation, and are therefore widely used in the Machine tool worktables, extruders, differentials, wind power equipment, and oil drilling machinery.

| Part Number | K81228M |
| Bearing Type | Axial cylindrical roller and cage assemblies, Single row |
| Series | K812 series (K812..-M) |
| Cage | M = Brass Cage |
| Rows NO. | One |
| Weight [lb] | 3.9683 |
| Ca Axial Dynamic [lbf] | 102218 |
| C0a Axial static [lbf] | 325563 |
| Cua Axial Fatigue [lbf] | 29533 |
| nB Speed ratings (grease) [rpm] | 712 |
| nG Speed ratings (oil) [rpm] | 1694 |
| Dw [inch] | 0.7480 |
| Dc [inch] | 7.8740 |
| Dc1 [inch] | 5.5118 |
| Eb Raceway [inch] | 5.9449 |
| Ea Raceway [inch] | 7.6772 |
The K81228M Cylindrical roller thrust bearings mainly consist of a shaft ring, a housing ring, cylindrical rollers, and a cage assembly. The rollers are arranged radially, forming a line contact load-bearing structure.
The advantages of cylindrical roller thrust bearings include extremely high axial load capacity, excellent rigidity, and a low coefficient of friction. Optimized roller end faces and flanges can accommodate slight eccentricity and impact loads, while also featuring a compact structure and high rotational accuracy.















