I like to keep at least one set of replacement bearings on hand for every hub that I have. For this purpose, I've prepared the table below which lists the bearing sizes for all of the hubs that I currently have.
| Hub | Bearing Dimensions | Designation | Quantity | ||
|---|---|---|---|---|---|
| Inner Dia | Outer Dia | Width | |||
| A2Z | 15mm | 26mm | 7mm | 15267 | 4 |
| DT Swiss 240s | 15mm | 28mm | 7mm | 6902 | 4 |
| Hope Pro 2 Evo | 17mm | 30mm | 7mm | 6903 | 2 |
| 15mm | 24mm | 5mm | 6802 | 2 | |
| 17mm | 28mm | 7mm | 17287 | 1 | |
| Novatec 712 | 15mm | 28mm | 7mm | 6902 | 4 |
| Novatec 882 | 15mm | 28mm | 7mm | 6902 | 4 |
| Tune Kong | 17mm | 26mm | 5mm | 6803 | 3 |
| 17mm | 30mm | 7mm | 6903 | 1 | |