Timken a-6639-a bearing Size Chart (mm/inches) |
|---|
| d | 33.34 mm |
| D | 68.26 mm |
| B | 22.22 mm |
| C | 17.46 mm |
| T | 22.22 mm |
| d1 | 52.5 mm |
| a | 19.32 mm |
| e | 0.55 |
| Y2 | 1.1 |
| Y0 | 0.6 |
| Mass | 0.38 kg |
| Dynamic load, C | 56.5 kN |
| Rating life coefficient, A2 | 1.9 |
| Static load, C0 | 71 kN |
| Fatigue limit load, Cu | 8.7 kN |
| Nlim (oil) | 7,500 rpm |
| Nlim (grease) | 5,700 rpm |
| Min operating temperature, Tmin | -40 °C |
| Max operating temperature, Tmax | 120 °C |
| Characteristic cage frequency, FTF | 0.43 Hz |
| Characteristic rolling element frequency, BSF | 6.8 Hz |
| Characteristic outer ring frequency, BPF0 | 7.78 Hz |
| Characteristic inner ring frequency, BPFI | 10.22 Hz |
| ra max | 0.8 mm |
| r1a max | 1.5 mm |