31 models with a 7.938 mm bore in this type, with outer diameter and width. Outer diameters on this page run from 12.7 mm to 100 mm.
| Model | Brand | Type | OD D (mm) | Width B (mm) | |
|---|---|---|---|---|---|
| NAF209-27 | ANDGE | Needle Roller Bearings | — | ||
| NAF309-27 | ANDGE | Needle Roller Bearings | — | ||
| NAFL209-27 | ANDGE | Needle Roller Bearings | 188 | — | |
| NAFL309-27 | ANDGE | Needle Roller Bearings | 230 | — | |
| NAFL309-28 | ANDGE | Needle Roller Bearings | 230 | — | |
| NAFLU209-27 | ANDGE | Needle Roller Bearings | 180 | Cross-ref → | |
| NAFS309-27 | ANDGE | Needle Roller Bearings | — | ||
| NAP09-27 | ANDGE | Needle Roller Bearings | 54 | — | |
| NAP309-27 | ANDGE | Needle Roller Bearings | 67 | — | |
| NAT209-27 | ANDGE | Needle Roller Bearings | 117 | — | |
| BA 55Z | IKO | Needle Roller Bearings | 12.7 | 7.92 | — |
| BA 56Z | IKO | Needle Roller Bearings | 12.7 | 9.52 | — |
| BA 57Z | IKO | Needle Roller Bearings | 12.7 | 11.13 | — |
| BA 59Z | IKO | Needle Roller Bearings | 12.7 | 14.27 | — |
| BAM 55 | IKO | Needle Roller Bearings | 12.7 | 7.92 | — |
| BAM 56 | IKO | Needle Roller Bearings | 12.7 | 9.52 | — |
| BAM 57 | IKO | Needle Roller Bearings | 12.7 | 11.13 | — |
| BAM 59 | IKO | Needle Roller Bearings | 12.7 | 14.27 | — |
| J-55 | NSK | Needle Roller Bearings | 12.7 | 7.92 | — |
| J-57 | NSK | Needle Roller Bearings | 12.7 | 11.13 | — |
| MJ-551 | NSK | Needle Roller Bearings | 12.7 | 7.92 | Cross-ref → |
| MJ-551 | ANDGE | Needle Roller Bearings | 12.7 | 7.92 | Cross-ref → |
| MJ-571 | NSK | Needle Roller Bearings | 12.7 | 11.13 | — |
| YB 55 | IKO | Needle Roller Bearings | 12.7 | 7.92 | — |
| BHA 57Z | IKO | Needle Roller Bearings | 14.288 | 11.13 | — |
| BHAM 57 | IKO | Needle Roller Bearings | 14.288 | 11.13 | — |
| YCR-16 | NSK | Needle Roller Bearings | 25.4 | 17.46 | — |
| YCRS-16 | NSK | Needle Roller Bearings | 25.4 | 17.46 | — |
| YCR-18 | NSK | Needle Roller Bearings | 28.575 | 17.46 | — |
| YCRS-18 | NSK | Needle Roller Bearings | 28.575 | 17.46 | — |
| NA309-27 | ANDGE | Needle Roller Bearings | 100 | 42.9 | — |
The bore is the shaft diameter, so it is the one dimension you cannot change: pick the bore first, then decide the type from the load and speed, then the outer diameter from the housing you have. If the housing is fixed, filter by outer diameter in the product center. For fits and shaft tolerances see the fit recommendations.