| Raceway diameter of the inner ring | d2 | 47.40 | mm |
| Minimum chamfer dimension | rmin | 1.50 | mm |
| Bore diameter outer ring | D1 | 66.60 | mm |
| Maximum recess radius | ra max | 1.50 | mm |
| Minimum diameter shaft shoulder | da min | 44 | mm |
| Maximum diameter of housing shoulder | Da max | 71 | mm |
| Reference speed | nϑr | 6,800 | |
| Fatigue load limit, radial | Cur | 8,300 | |
| Basic dynamic load rating, radial | Cr | 83,000 | |
| Outside diameter | D | 80 | mm |
| Limiting speed | nG | 10,900 | |
| Basic static load rating, radial | C0r | 74,000 | |
| Width | B | 21 | mm |
| Bore diameter | d | 35 | mm |
| Manufacturer | Part Number |
|---|---|
| NSK | 21307 CD-E4-C3 (NSK) |
