9 models in the 688 series, 8–65 mm bore. Every row links to the full specification page and to the cross-reference page of that model.
| Model | Brand | Bore d (mm) | OD D (mm) | Width B (mm) | |
|---|---|---|---|---|---|
| 688 | KOYO | 8 | 16 | 4 | Cross-ref → |
| 68808 | ANDGE | 40 | 61 | — | |
| 688808 | ANDGE | 40 | 67 | — | |
| 688908 | ANDGE | 40 | 67 | — | |
| 688910K | ANDGE | 52.388 | 84.5 | — | |
| 688911 | ANDGE | 52.388 | 84.5 | Cross-ref → | |
| 688711 | ANDGE | 55 | 92 | — | |
| 688711K1 | ANDGE | 55 | 92 | — | |
| 688713 | ANDGE | 65 | 102 | — |
688 series bearings follow the ISO dimension plan for this family, so a given number is dimensionally interchangeable between brands - see the cross-reference to confirm. Choose the suffix for your duty: shields for dry, clean positions, contact seals for wet or dusty ones, and a larger clearance class where the fit or temperature demands it.
Other Custom & Special Bearings series: 62 · 685 · 63 · 60 · SNV · K · BND · 697