Contact with us NNU4921K bearing Size Chart (mm/inches) |
|---|
| d | 40 mm |
| D | 68 mm |
| B | 15 mm |
| a min | 2.29 mm |
| a max | 2.49 mm |
| Ca min | 3.89 mm |
| Ca max | 4.19 mm |
| rs min | 1 mm |
| rNs min | 0.5 mm |
| D3 max | 64.82 mm |
| b min | 1.9 mm |
| b max | 2.2 mm |
| r0 max | 0.6 mm |
| D4 max | 74.6 mm |
| f | 1.7 mm |
| Snap ring reference | R68 |
| Radial clearance class | CN |
| Mass | 0.19 kg |
| Dynamic load, C | 16.8 kN |
| Static load, C0 | 11.5 kN |
| Fatigue limit load, Cu | 0.52 kN |
| f0 | 15.2 |
| Nlim (grease) | 10,000 rpm |
| Min operating temperature, Tmin | -20 °C |
| Max operating temperature, Tmax | 120 °C |
| Characteristic cage frequency, FTF | 0.43 Hz |
| Characteristic rolling element frequency, BSF | 6.66 Hz |
| Characteristic outer ring frequency, BPF0 | 5.12 Hz |
| Characteristic inner ring frequency, BPFI | 6.88 Hz |
| da min | 45 mm |
| Da max | 63 mm |
| ra max | 1 mm |
| rNa max | 0.5 mm |
| Db min | 76 mm |