| Basic dynamic load rating, radial | Cr | 6,380 | |
| Outside diameter | D | 37 | mm |
| Reference speed | nϑr | 17,000 | |
| Fatigue load limit, radial | Cur | 233 | N |
| Width | B | 9 | mm |
| Bore diameter | d | 20 | mm |
| Limiting speed | nG | 28,500 | |
| Basic static load rating, radial | C0r | 3,680 |
| Shoulder diameter inner ring | d1 | 25.20 | mm |
| Minimum chamfer dimension | rmin | 0.30 | mm |
| Shoulder diameter outer ring | D1 | 32 | mm |
| Maximum fillet radius | ra max | 0.30 | mm |
| Minimum diameter shaft shoulder | da min | 22 | mm |
| Maximum diameter of housing shoulder | Da max | 35 | mm |
| Manufacturer | Part Number |
|---|---|
| ADR | AY20 |
| Marlin-Rockwell Corp. | 1904-S |
| GPZ Bearings | 1000904 |
| SKF | 61904 (SKF) |
| Koyo | 6904 |
| NSK | 6904 (NSK) |
