Bearing NU221 KOYO NU221 KOYO bearing Size Chart (mm/inches) |
|---|
| d | 7 mm |
| D | 19 mm |
| B | 6 mm |
| d1 | 9.2 mm |
| D1 | 16.7 mm |
| rs min | 0.3 mm |
| Radial clearance class | CN |
| Mass | 0.07 kg |
| Dynamic load, C | 2.31 kN |
| Static load, C0 | 0.9 kN |
| Fatigue limit load, Cu | 0.06 kN |
| f0 | 10.5 |
| Nref | 35,000 rpm |
| Nlim | 51,000 rpm |
| Min operating temperature, Tmin | -20 °C |
| Max operating temperature, Tmax | 120 °C |
| Characteristic cage frequency, FTF | 0.36 Hz |
| Characteristic rolling element frequency, BSF | 3.44 Hz |
| Characteristic outer ring frequency, BPF0 | 2.56 Hz |
| Characteristic inner ring frequency, BPFI | 4.44 Hz |
| da min | 9 mm |
| da max | 9.2 mm |
| Da max | 17 mm |
| ra max | 0.3 mm |