42 models with a 4 mm bore in this type, with outer diameter and width. Outer diameters on this page run from 6 mm to 14 mm.
| Model | Brand | Type | OD D (mm) | Width B (mm) | |
|---|---|---|---|---|---|
| K 4×6×8TN1 | ANDGE | Needle Roller Bearings | 6 | 8 | — |
| K4x6x7.8XT2 | NTN | Needle Roller Bearings | 6 | 8 | — |
| FBNP-477 | NSK | Needle Roller Bearings | 7 | 7 | — |
| K 4x7x10 TN | SKF | Needle Roller Bearings | 7 | 10 | — |
| K 4x7x7 TN | SKF | Needle Roller Bearings | 7 | 7 | — |
| K 4×7×7TN1 | ANDGE | Needle Roller Bearings | 7 | 7 | — |
| K4X7X10-TV | INA | Needle Roller Bearings | 7 | 10 | — |
| K4X7X7-TV | INA | Needle Roller Bearings | 7 | 7 | — |
| K4x7x7T2 | NTN | Needle Roller Bearings | 7 | 7 | — |
| KT 477N | IKO | Needle Roller Bearings | 7 | 7 | — |
| BK 0408 | SKF | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| BK0408 | ANDGE | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| BK0408 | INA | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| BK0408B | ANDGE | Needle Roller Bearings | 8 | 8 | — |
| BK0408T2 | NTN | Needle Roller Bearings | 8 | 8 | — |
| BK0408TN | SKF | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| BK0408TN | INA | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| BK0408TN | FAG | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| DD500401 | NSK | Needle Roller Bearings | 8 | 6 | — |
| F-48 | NSK | Needle Roller Bearings | 8 | 8 | — |
| FC-4K | NSK | Needle Roller Bearings | 8 | 6 | — |
| FJP-48 | NSK | Needle Roller Bearings | 8 | 8 | — |
| FJV-48 | ANDGE | Needle Roller Bearings | 8 | 8 | — |
| HK 0408 | SKF | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| HK0408 | INA | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| HK0408 | ANDGE | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| HK0408B | ANDGE | Needle Roller Bearings | 8 | 8 | — |
| HK0408FT2 | NTN | Needle Roller Bearings | 8 | 8 | — |
| HK0408T2 | NTN | Needle Roller Bearings | 8 | 8 | — |
| HK0408TN | SKF | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| HK0408TN | INA | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| HK0408TN | FAG | Needle Roller Bearings | 8 | 8 | Cross-ref → |
| MF-48 | NSK | Needle Roller Bearings | 8 | 8 | — |
| TAL48 | IKO | Needle Roller Bearings | 8 | 8 | — |
| TALM48 | IKO | Needle Roller Bearings | 8 | 8 | — |
| TLA 48Z | IKO | Needle Roller Bearings | 8 | 8 | — |
| TLAM 48 | IKO | Needle Roller Bearings | 8 | 8 | — |
| YTL 48 | IKO | Needle Roller Bearings | 8 | 8 | — |
| FCBN-4K | NSK | Needle Roller Bearings | 10 | 9 | — |
| FCJ-12 | NSK | Needle Roller Bearings | 12 | 8 | — |
| FCJB-12 | NSK | Needle Roller Bearings | 12 | 8 | — |
| AXK 0414 TN | SKF | Needle Roller Bearings | 14 | 2 | Cross-ref → |
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.