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| NACHI 21318 CCK+H 318 Bearing Details： |
| Bearing Name | 21318 CCK+H 318 |
| New Model | 21318CCK+H318 |
| Old Model | 253316 bearing |
| product Model | 21318CCK+H318 |
| Category | Spherical Roller Bearings |
| Brand | NACHI Bearing |
| Inner Diameter d ( mm ) | 80 |
| Outer Diameter D ( mm ) | 190 |
| Thickness B ( mm ) | 43 |
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| NACHI 21318 CCK+H 318 Bearing Bearing Size and Drawing： |
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NACHI 21318 CCK+H 318 Bearing With size alternative model
| Model | Inner Diameter
d(mm) | Outer Diameter
D(mm) | thickness
B(mm) | Brand | Type |
| KOYO 1318 K+H 318 Bearing | 80 | 190 | 43 | KOYO | Self-aligning Ball Bearings |
| NSK 21318CCK+H318 Bearing | 80 | 190 | 43 | NSK | Spherical Roller Bearings |
| TBS 21318 CCK+H 318 Bearing | 80 | 190 | 43 | TBS | Spherical Roller Bearings |
| NACHI 21318 CCK+H 318 Bearing | 80 | 190 | 43 | NACHI | Spherical Roller Bearings |
| NTN 21318 CCK+H 318 Bearing | 80 | 190 | 43 | NTN | Spherical Roller Bearings |
| SNR 1318 K+H 318 Bearing | 80 | 190 | 43 | SNR | Self-aligning Ball Bearings |
| NACHI 1318K+H318 Bearing | 80 | 190 | 43 | NACHI | Self-aligning Ball Bearings |
| NACHI 1318 K+H 318 Bearing | 80 | 190 | 43 | NACHI | Self-aligning Ball Bearings |
| NTN 21318CCK+H318 Bearing | 80 | 190 | 43 | NTN | Spherical Roller Bearings |
| TBS 21318 CCK Bearing | 80 | 190 | 43 | TBS | Spherical 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.
