T158-904A1 Steering Pivot Thrust Tapered Roller Bearing, Off-apex Design Finger-type Cage
The T158-904A1 Thrust tapered roller bearings are suitable for heavy-duty, high-rigidity axial load applications. Classic applications include crane slewing mechanisms, oil drilling rig rotary tables, rolling mill pressing mechanisms, heavy machine tool spindles, ship propeller thrust shafts, and the axial positioning ends of large gearboxes.
The T158-904A1 bearing is a Steering pivot thrust tapered roller bearing, off-apex design with an inner diameter of 40.2336 mm , an outer diameter of 65.883 mm, a width of 19.431 mm. It typically uses PN (ABEC-1) grade precision tolerances and bearing steel rings, bearing steel rolling mlement. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
T158-904A1 bearings ( 40.2336 mm x 65.883 mm x 19.431 mm) have the advantages of Withstanding extremely large and heavy unidirectional axial thrust, and are therefore widely used in the oscillating steering pivot.
| Part Number | T158-904A1 |
| Design type | TTSP: Two tapered races; Stamped steel assembly retainer; Finger-type cage riding on small roller ends. |
| Bearing Type | Steering pivot thrust tapered roller bearing, off-apex design |
| Interchangeable | TIMKEN T158-904A1 |
| Manufacturer Part Code | T158-904A1 |
| Cage | Finger-type cage |
| Units | Inch |
| Tolerance class | PN (ABEC-1) |
| Oil Holes in Retainer | No |
| d φ Inside [inch] | 1.5840 |
| D Φ Outside [inch] | 2.5938 |
| T Width [inch] | 0.7650 |
| R (Max) Shaft Fillet Radius [inch] | 0.0315 |
The T158-904A1 Thrust tapered roller bearings mainly consist of a shaft ring, a housing ring, tapered rollers, and a cage. The raceways of the shaft ring and housing ring have a conical surface structure, and the rollers make line contact with the raceways. The cage is typically made of machined brass or stamped steel to ensure proper roller guidance.
Thrust tapered roller bearings can withstand enormous unidirectional axial loads and also possess a certain radial load-bearing capacity, far exceeding that of thrust ball bearings. They offer high rigidity, strong impact resistance, and precise axial positioning and preload can be achieved through the tapered roller structure.
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