61948 Deep Groove Ball Bearing (240x320x38mm)
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 61948 | 159 kN | 200 kN | 5.1 kN |
| NSK 6948 | 170 kN | 190 kN | — |
| Schaeffler (FAG) 61948 | 211 kN | 240 kN | 8.6 kN |
| NTN 6948 | 188 kN | 203 kN | 8.05 kN |
| Timken 61948MA | 159 kN | 200 kN | — |
Speed Ratings
Speed limits depend on sealing and lubrication, and definitions differ by manufacturer. The figures below are for the open version of this bearing. Always confirm the exact variant in the manufacturer's table.
Sealed and shielded versions such as 2Z or 2RS have their own pages; a machined brass cage writing gets its own ↳ row where the catalogue prints a different limit.
| Brand | Grease open / shielded | Oil open | Reference | Limiting |
|---|---|---|---|---|
| SKF 61948 | — | — | 4,000 r/min | 2,400 r/min |
| ↳ 61948 MA | — | — | — | 3,200 r/min |
| NSK 6948 | 1,700 r/min | 2,000 r/min | — | — |
| Schaeffler (FAG) 61948 | — | — | 2,330 r/min | 2,600 r/min |
| NTN 6948 | 1,800 r/min | 2,100 r/min | — | — |
| Timken 61948MA | 1,800 r/min | 2,200 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.
- Schaeffler (FAG) — Schaeffler Technologies AG & Co. KG, Rolling Bearings, HR 1, Herzogenaurach, Germany, Feb. 2025.
- NTN — NTN Corporation, Ball and Roller Bearings, CAT. No. 2203-3E, Osaka, Japan, Sep. 2000.
- Timken — The Timken Company, Deep Groove Ball Bearings, Catalog E10857-GB, North Canton, OH, USA.
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 →