6308-2Z Deep Groove Ball Bearing (40x90x23mm)
How to read this designation →
Bearing dimensions and basic technical information.
Schematic only — for the actual construction, refer to each manufacturer's information.
Base model: 6308
Related designations: SKF 6308-2Z · NSK 6308ZZ · Schaeffler (FAG) 6308-C-2Z · NTN 6308ZZ · Timken 6308-ZZ
Suffix 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 6308-2Z | 42.3 kN | 24 kN | 1.02 kN |
| NSK 6308ZZ | 45 kN | 24 kN | — |
| Schaeffler (FAG) 6308-C-2Z | 47 kN | 25 kN | 1.74 kN |
| NTN 6308ZZ | 45 kN | 24 kN | 1.83 kN |
| Timken 6308-ZZ | 40.7 kN | 24 kN | — |
Speed Ratings
Speed limits depend on sealing and lubrication, and definitions differ by manufacturer. The figures below are for this shielded version (6308-2Z). Non-contact seals and shields run close to the open bearing. Always confirm the exact variant in the manufacturer's table.
| Brand | Grease shielded (2Z) | Oil shielded (2Z) | Reference | Limiting |
|---|---|---|---|---|
| SKF 6308-2Z | — | — | — | 8,500 r/min |
| NSK 6308ZZ | — | — | — | — |
| Schaeffler (FAG) 6308-C-2Z | — | — | — | 10,100 r/min |
| NTN 6308ZZ | — | — | — | — |
| Timken 6308-ZZ | — | — | — | — |
NSK, NTN and Timken do not publish a limiting speed for this shielded variant.
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 10857, 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 →