81164M bearings ( 320 mm x 400 mm x 63 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 | 81164M |
| Bearing Type | Axial cylindrical roller bearings, Single direction, Single row |
| Design | 1 |
| Equivalent | 811 64 M , 81164MPB |
| Series | 811 series (811..-M) |
| Cage | M = Brass cage |
| Accuracy class | PN (ABEC-1) |
| Rows NO. | One |
| Axial cylindrical roller and cage assemblies | K81164-M |
| Housing locating washer | GS81164 |
| Shaft locating washer | WS81164 |
| Weight [lb] | 45.6352 |
| Ca Axial Dynamic [lbf] | 246771 |
| C0a Axial static [lbf] | 1066863 |
| Cua Axial Fatigue [lbf] | 86507 |
| nB Speed ratings (grease) [rpm] | 263 |
| nG Speed ratings (oil) [rpm] | 781 |
| d φ Inside [inch] | 12.5984 |
| D Φ Outside [inch] | 15.7480 |
| T Thickness [inch] | 2.4803 |
| B Width [inch] | 0.7480 |
| D1 [inch] | 12.7559 |
| d1 [inch] | 15.5905 |
| r(min.) [inch] | 0.0787 |
| Mounting dimensions | |
| da [inch] | 15.5118 |
| Da(max.) [inch] | 13.1496 |
| ra(max.) [inch] | 0.0787 |
The 81164M 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.















