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| INA 81248 Bearing Details： |
| Bearing Name | 81248 |
| New Model | 81248 |
| Old Model | bearing |
| product Model | 81248 |
| Category | Cylindrical Roller Thrust Bearings |
| Brand | INA Bearing |
| Inner Diameter d ( mm ) | 240 |
| Outer Diameter D ( mm ) | 340 |
| Thickness B ( mm ) | 78 |
|
| INA 81248 Bearing Bearing Size and Drawing： |
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INA 81248 Bearing With size alternative model
| Model | Inner Diameter
d(mm) | Outer Diameter
D(mm) | thickness
B(mm) | Brand | Type |
| INA 81248 Bearing | 240 | 340 | 78 | INA | Cylindrical Roller Thrust Bearings |
| TBS 51248 Bearing | 240 | 340 | 78 | TBS | Thrust Ball Bearings |
| SNR 51248 Bearing | 240 | 340 | 78 | SNR | Thrust Ball Bearings |
| INA 81248 Bearing | 240 | 340 | 78 | INA | Cylindrical Roller Thrust Bearings |
| SNR 51248 Bearing | 240 | 340 | 78 | SNR | Thrust Ball Bearings |
| NSK 51248 Bearing | 240 | 340 | 78 | NSK | Thrust Ball Bearings |
| STEYR 51248 Bearing | 240 | 340 | 78 | STEYR | Thrust Ball Bearings |
| INA 81248 Bearing | 240 | 340 | 78 | INA | Thrust Roller Bearings |
| TBS 81248M Bearing | 240 | 340 | 78 | TBS | Thrust Roller Bearings |
| TBS 81248 M Bearing | 240 | 340 | 78 | TBS | Thrust Roller Bearings |
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What are the structural components and design advantages of cylindrical roller thrust bearings?
Cylindrical roller thrust bearings consist of a shaft ring, housing ring, cylindrical rollers, and a cage (some are full complement roller structures). The rollers and raceways have a line contact design, offering advantages such as extremely high axial load capacity, high rigidity, low coefficient of friction, impact resistance, and insensitivity to installation errors. They are suitable for rigid applications requiring heavy axial loads at low to medium speeds.
What are the advantages of cylindrical roller thrust bearings compared to other similar bearings?
Compared to thrust ball bearings, cylindrical roller thrust bearings offer significantly higher axial load capacity and impact resistance, making them more suitable for heavy-duty applications. Compared to thrust self-aligning roller bearings, they have a simpler structure, lower friction, and lower cost, but lack self-aligning functionality, making them suitable for applications requiring high alignment precision. Compared to thrust tapered roller bearings, they have a slightly lower permissible limiting speed, but require less radial space, making them more suitable for compact designs.
What are the applicable occasions and typical applications of cylindrical roller thrust bearings?
These bearings are suitable for heavy-duty, low-to-medium speed mechanical applications that require high rigidity and withstand enormous axial thrust. Typical applications include large gearboxes, ship propeller thrust shafts, oil drilling rig rotary tables, heavy-duty crane slewing mechanisms, turbine main shafts, rolling mill pressing mechanisms, and hydraulic presses.
