The NSK 6056DDU is a extra-large size deep groove ball bearings with ISO dimensions 280×420×65 mm. Bearings in the 280mm bore range are commonly used in HV motors, turbines, generators, boiler cooling fans (over 200kW range). This is an double sealed (2RS), maintenance-free lubrication, ideal for harsh environments variant. NSK Japan — precision bearing specialist, CNC spindles and high-speed bearings — 6 equivalent brands available under ISO designation 6056.
NSK 6056DDU
Deep Groove Ball Bearings — 280×420×65 mm — ISO 6056
Technical Specifications
Full specifications for NSK 6056DDU per OEM catalog.
* Tolerances per ISO. Specifications per OEM catalog.
Cross-Reference — Equivalent Codes
Same ISO 6056 — interchangeable dimensions.
| Brand | Part Number |
|---|---|
| NSK | 6056DDU |
| fag | 6056-2RSR |
| ntn | 6056LLU |
| skf | 6056-2RS1 |
| zvl | 6056-2RSR |
| koyo | 60562RS |
| nachi | 60562NSLE |
| timken | 6056-2RS |
* C/C₀ may vary ±5% across manufacturers.
Compare 6056 Across Brands
Same interchangeable dimensions — different load ratings and pricing.
| Brand | SKU | d×D×B | C (kN) | C₀ (kN) | |
|---|---|---|---|---|---|
| NSK | 6056DDU | 280×420×65 | 276 | 300 | Current |
| FAG | 6056 | 280×420×65 | 281.5 | — | View |
| FAG | 6056-2RSR | 280×420×65 | 281.5 | — | View |
| FAG | 6056-2Z | 280×420×65 | 281.5 | — | View |
| Koyo | 6056 | 280×420×65 | 270.5 | — | View |
| Koyo | 60562RS | 280×420×65 | 270.5 | — | View |
| Koyo | 6056ZZ | 280×420×65 | 270.5 | — | View |
| NACHI | 6056 | 280×420×65 | 273.2 | — | View |
| NACHI | 60562NSLE | 280×420×65 | 273.2 | — | View |
FAQ — NSK 6056DDU
Quick answers to common questions.
Common Applications
Deep Groove Ball Bearings with 280mm bore diameter are commonly used in HV motors, turbines, generators, boiler cooling fans (over 200kW range).
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