| Bore diameter | d | 105 | mm |
| Width | B | 20 | mm |
| Basic static load rating, radial | C0r | 45,000 | |
| Limiting speed for grease lubrication | nG Grease | 9,000 |
| Outside diameter | D | 145 | mm |
| Basic dynamic load rating, radial | Cr | 60,000 | |
| Fatigue load limit, radial | Cur | 4,250 | |
| Limiting speed for oil lubrication | nG Oil | 14,000 |
| Diameter shaft shoulder | da | 112 | mm |
| Shoulder diameter outer ring | Da | 138 | mm |
| Maximum recess radius | ra max | 0.60 | mm |
| Maximum diameter injection pitch | Etk max | 121.40 | mm |
| Diameter shaft shoulder clearance | da | h12 | |
| Shoulder diameter outer ring clearance | Da | H12 | |
| Minimum diameter injection pitch | Etk min | 117.40 | mm |
| Distance between the apexes of the pressure cones | a | 26.70 | mm |
| Minimum chamfer dimension | rmin | 1.10 | mm |
| Contact angle | α | 15 | ° |
| Manufacturer | Part Number |
|---|---|
| SKF | 71921CDGA/P4A |
| Koyo | 7921CGLFGP4 |
| Koyo | 7921CPAGLFTP4 |
| RHP | 7921CTRSULP3 |
| RHP | 7921CTRSULP4 |
| RHP | 7921CTSULP4 |
| Marlin-Rockwell Corp. | 1921RDS-BKE#7 |
