| Under roller diameter | Fw | 30 | mm |
| Width, outer ring | B | 20 | mm |
| Basic static load rating, radial | C0r | 39,500 | |
| Limiting speed | nG | 8,600 | |
| Reference speed | nϑr | 6,300 |
| Outside diameter | D | 37 | mm |
| Basic dynamic load rating, radial | Cr | 22,000 | |
| Fatigue load limit, radial | Cur | 5,100 | |
| Limiting speed for grease lubrication | nG Grease | 5,200 |
| Minimum chamfer dimension | rmin | 0.80 | mm |
| Minimum width to base of drawn cup with closed end | Ct min | 17.30 | mm |
| Manufacturer | Part Number |
|---|---|
| SKF | RBNA303720 (SKF) |
| NTN | BK3020 (NTN) |
| SKF | BK3020 |
| Torrington | MFJ-3020 |
| IKO | TLAM3020 |
| Koyo | 30MKM3720 |
