6306-Z Deep Groove Ball Bearing (30x72x19mm)
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: 6306
Related designations: SKF 6306-Z · Timken 6306-Z
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 6306-Z | 29.6 kN | 16 kN | 0.67 kN |
| Timken 6306-Z | 26.6 kN | 15 kN | — |
Speed Ratings
Speed limits depend on sealing and lubrication, and definitions differ by manufacturer. The figures below are for this shielded version (6306-Z). Non-contact seals and shields run close to the open bearing. Always confirm the exact variant in the manufacturer's table.
Limiting speeds for a bearing with only one shield (Z) are those of the open bearing (SKF Rolling Bearings, PUB BU/P1 17000).
| Brand | Grease shielded (Z) | Oil shielded (Z) | Reference | Limiting |
|---|---|---|---|---|
| SKF 6306-Z | — | — | 20,000 r/min | 13,000 r/min |
| Timken 6306-Z | 10,000 r/min | 15,000 r/min | — | — |
References
- SKF — SKF Group, Rolling Bearings, PUB BU/P1 17000/1 EN, Oct. 2018.
- 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 →