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| TBS 21308 CCK Bearing Details： |
| Bearing Name | 21308 CCK |
| New Model | 21308CCK |
| Old Model | 53308 bearing |
| product Model | 21308CCK |
| Category | Spherical Roller Bearings |
| Brand | TBS Bearing |
| Inner Diameter d ( mm ) | 40 |
| Outer Diameter D ( mm ) | 90 |
| Thickness B ( mm ) | 23 |
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| TBS 21308 CCK Bearing Bearing Size and Drawing： |
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TBS 21308 CCK Bearing With size alternative model
| Model | Inner Diameter
d(mm) | Outer Diameter
D(mm) | thickness
B(mm) | Brand | Type |
| TBS NU 308 E CJ* Bearing | 40 | 90 | 23 | TBS | Cylindrical Roller Bearings |
| KOYO 6308ZZ Bearing | 40 | 90 | 23 | KOYO | Deep Groove Ball Bearings |
| NSK NJ308E+HJ308E Bearing | 40 | 90 | 23 | NSK | Cylindrical Roller Bearings |
| ZKL NJ 308 Bearing | 40 | 90 | 23 | ZKL | Cylindrical Roller Bearings |
| NSK NSKNJ308ET Bearing | 40 | 90 | 23 | NSK | Cylindrical Roller Bearings |
| STEYR NJ 308 Bearing | 40 | 90 | 23 | STEYR | Cylindrical Roller Bearings |
| STEYR 7308 B Bearing | 40 | 90 | 23 | STEYR | Angular Contact Ball Bearings |
| TBS 7308BECBM* Bearing | 40 | 90 | 23 | TBS | Angular Contact Ball Bearings |
| FAG NU 308 E.TVP2 Bearing | 40 | 90 | 23 | FAG | Cylindrical Roller Bearings |
| RHP 6308 N Bearing | 40 | 90 | 23 | RHP | Deep Groove Ball Bearings |
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What are the structural components and design advantages of spherical roller bearings?
Spherical roller bearings consist of an inner ring, an outer ring, spherical rollers, and a cage. The inner ring has two raceways, and the outer ring has a spherical raceway. The rollers have a drum-shaped design, providing self-aligning capability, effectively compensating for misalignment between the shaft and the housing bore, as well as shaft deflection. They also offer extremely high load-bearing capacity, shock resistance, and vibration resistance.
What are the advantages compared to other similar bearings?
Compared to self-aligning ball bearings, spherical roller bearings have significantly higher radial and axial load-bearing capacity, making them suitable for heavy-duty applications. Compared to cylindrical roller bearings, they have self-aligning capabilities, accommodating installation errors and shaft deformation. Compared to tapered roller bearings, their self-aligning performance is superior, making them more suitable for long shafts or applications with high flexibility.
What are the applicable occasions and typical applications?
These bearings are suitable for heavy-duty machinery applications involving heavy loads, vibration, shock, or misalignment. Typical applications include mining conveying equipment, wind turbine main shafts, paper calenders, large speed reducers, vibrating screens, ship propulsion systems, and metallurgical rolling mills.
