61856 Deep Groove Ball Bearing (280x350x33mm)
How to read this designation →
Bearing dimensions and basic technical information.
Schematic only — for the actual construction, refer to each manufacturer's information.
Manufacturer Ratings
Load-rating symbols are printed as each manufacturer writes them in its own catalogue, so the same quantity can carry a different symbol from brand to brand.
| Brand | Dynamic Load Rating | Static Load Rating | Fatigue Load Limit |
|---|---|---|---|
| SKF 61856 | 138 kN | 200 kN | 4.75 kN |
| NSK 6856 | 146 kN | 191 kN | — |
| NTN 6856 | 151 kN | 177 kN | 6.65 kN |
Speed Ratings
Speed limits depend on sealing and lubrication, and definitions differ by manufacturer. Contact-sealed variants are normally greased for life and run slower. Always confirm the exact variant in the manufacturer's table.
| Brand | Grease open / shielded | Oil open | Reference | Limiting |
|---|---|---|---|---|
| SKF 61856 | — | — | 3,400 r/min | 2,200 r/min |
| ↳ 61856 MA | — | — | — | 2,800 r/min |
| NSK 6856 | 1,500 r/min | 1,700 r/min | — | — |
| NTN 6856 | 1,600 r/min | 1,900 r/min | — | — |
↳ rows list a variant's own limiting speed (a shielded version, or a machined brass cage writing) when it differs from the open / standard version; all other figures are shared.
References
- SKF — SKF Group, Rolling Bearings, PUB BU/P1 17000/1 EN, Oct. 2018.
- NSK — NSK Ltd., Rolling Bearings for Industrial Machinery, CAT. No. E1103, Tokyo, Japan, Jan. 2025.
- NTN — NTN Corporation, Ball and Roller Bearings, CAT. No. 2203-3E, Osaka, Japan, Sep. 2000.
Related Guides
Disclaimer: Data on this page is compiled from publicly available online sources for reference only, and not every model appears in a manufacturer's published catalog. Values may differ between sources and editions — always verify against the manufacturer's current documentation before design or purchase.Full disclaimer →