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| TBS 21311 CCK Bearing Details： |
| Bearing Name | 21311 CCK |
| New Model | 21311CCK |
| Old Model | 53311 bearing |
| product Model | 21311CCK |
| Category | Spherical Roller Bearings |
| Brand | TBS Bearing |
| Inner Diameter d ( mm ) | 55 |
| Outer Diameter D ( mm ) | 120 |
| Thickness B ( mm ) | 29 |
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| TBS 21311 CCK Bearing Bearing Size and Drawing： |
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TBS 21311 CCK Bearing With size alternative model
| Model | Inner Diameter
d(mm) | Outer Diameter
D(mm) | thickness
B(mm) | Brand | Type |
| MRC 6311-RS Bearing | 55 | 120 | 29 | MRC | Deep Groove Ball Bearings |
| KOYO 6311-2Z Bearing | 55 | 120 | 29 | KOYO | Deep Groove Ball Bearings |
| RHP 6311-2RS Bearing | 55 | 120 | 29 | RHP | Deep Groove Ball Bearings |
| NTN 6311N Bearing | 55 | 120 | 29 | NTN | Deep Groove Ball Bearings |
| ZKL NJ 311 Bearing | 55 | 120 | 29 | ZKL | Cylindrical Roller Bearings |
| NSK NJ311E+HJ311E Bearing | 55 | 120 | 29 | NSK | Cylindrical Roller Bearings |
| TBS 6311 NR Bearing | 55 | 120 | 29 | TBS | Deep Groove Ball Bearings |
| KOYO 7311B Bearing | 55 | 120 | 29 | KOYO | Angular Contact Ball Bearings |
| FAG NU311E Bearing | 55 | 120 | 29 | FAG | Cylindrical Roller Bearings |
| TBS NJ 311 E Bearing | 55 | 120 | 29 | TBS | Cylindrical Roller 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.
