NTN RNA4904R needle roller bearings
Advance NTN RNA4904R needle roller bearings is 72 mm D your source for quality and accessories. shop online 19 mm B for home delivery or pick 30 mm d up in one of our 10000 .
| d | 30 mm |
| D | 72 mm |
| B | 19 mm |
| C | 16 mm |
| T | 20.75 mm |
| d1 | 49.2 mm |
| a | 15.4 mm |
| rs min | 1.5 mm |
| r1s min | 1.5 mm |
| e | 0.32 |
| Y2 | 1.9 |
| Y0 | 1.05 |
| Mass | 0.39 kg |
| ISO 355 reference | T2FB030 |
| Dynamic load, C | 62.1 kN |
| Rating life coefficient, A2 | 1 |
| Static load, C0 | 63.6 kN |
| Fatigue limit load, Cu | 7.8 kN |
| Nref | 7,100 rpm |
| Nlim | 11,000 rpm |
| Min operating temperature, Tmin | -40 °C |
| Max operating temperature, Tmax | 120 °C |
| Characteristic cage frequency, FTF | 0.4 Hz |
| Characteristic rolling element frequency, BSF | 4.71 Hz |
| Characteristic outer ring frequency, BPF0 | 5.6 Hz |
| Characteristic inner ring frequency, BPFI | 8.4 Hz |
| da max | 40 mm |
| db min | 38.5 mm |
| Da min | 62 mm |
| Da max | 63.5 mm |
| Db min | 66 mm |
| Ca min | 3 mm |
| Cb min | 4.5 mm |
| ra max | 1.5 mm |
| r1a max | 1.5 mm |
Detailed Parameters
parameter：
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