Bearing 7221 BDT ISO 7221 BDT ISO bearing Size Chart (mm/inches) |
|---|
| d | 220 mm |
| D | 370 mm |
| B | 120 mm |
| D1 | 327.9 mm |
| rs min | 4 mm |
| Number of lubrication holes | 3 |
| b | 19.1 mm |
| k | 9 mm |
| e | 0.3 |
| Y1 | 2.28 |
| Y2 | 3.4 |
| Y0 | 2.23 |
| Radial clearance class | C4 |
| Mass | 52.21 kg |
| Dynamic load, C | 2,190 kN |
| Static load, C0 | 2,940 kN |
| Fatigue limit load, Cu | 185 kN |
| Nref | 1,200 rpm |
| Nlim | 1,700 rpm |
| Min operating temperature, Tmin | -40 °C |
| Max operating temperature, Tmax | 200 °C |
| Characteristic cage frequency, FTF | 0.43 Hz |
| Characteristic rolling element frequency, BSF | 7.16 Hz |
| Characteristic outer ring frequency, BPF0 | 9.09 Hz |
| Characteristic inner ring frequency, BPFI | 11.91 Hz |
| da min | 237 mm |
| Da max | 353 mm |
| ra max | 3 mm |