50 TPS 121 Self-aligning Thrust Cylindrical Roller Bearing
The 50 TPS 121 Cylindrical roller thrust bearings are specifically designed for applications requiring heavy axial loads and stringent positioning accuracy. Classic applications include heavy-duty vertical lathe tables, marine propeller shaft thrust devices, large gearboxes, wind turbine main gearboxes, rolling mill pressing mechanisms, and crane slewing bearings.
The 50 TPS 121 bearing is a Self-aligning thrust cylindrical roller bearing with an inner diameter of 127 mm , an outer diameter of 266.7 mm, a width of 66.675 mm. It typically uses PN (ABEC-1) grade precision tolerances and bearing steel rings, bearing steel rolling mlement. Its dynamic axial rated load is approximately 798172 N, its static axial rated load is approximately 3698780 N. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
50 TPS 121 bearings ( 127 mm x 266.7 mm x 66.675 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 | 50 TPS 121 |
| Design type | TPS: Thrust cylindrical roller bearing with self-aligning washer |
| Bearing Type | Self-aligning thrust cylindrical roller bearing |
| Interchangeable | TIMKEN 50 TPS 121 |
| Manufacturer Part Code | 50TPS121 |
| Series | TPS |
| Units | Metric |
| Tolerance class | PN (ABEC-1) |
| C0a Axial Static [lbf] | 831485 |
| Ca Axial Dynamic [lbf] | 179429 |
| nG Speed ratings (oil) [rpm] | 1129 |
| d φ Inside [inch] | 5.0000 |
| D Φ Outside [inch] | 10.5000 |
| T Width [inch] | 2.6250 |
| r Fillet Radius [inch] | 0.1260 |
| d1 [inch] | 5.1252 |
| D1 [inch] | 9.9374 |
| Rt Aligning Washer Radius [inch] | 12.7500 |
| E (Max) Shoulder Diameter Housing [inch] | 6.2520 |
| H (Min) Shoulder Diameter Shaft [inch] | 9.4370 |
| Weight [lb] | 38.8010 |
The 50 TPS 121 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.
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