KOYO MK8121 needle roller bearings
KOYO MK8121 needle roller bearings Needs Analysis , 670 mm d Manufacturing Service . Get Your Free.
| d | 670 mm |
| D | 820 mm |
| B | 69 mm |
| rs min | 4 mm |
| Radial clearance class | C3 |
| Mass | 75.1 kg |
| Dynamic load, C | 425 kN |
| Static load, C0 | 850 kN |
| Fatigue limit load, Cu | 14.2 kN |
| f0 | 15.9 |
| Nlim (oil) | 700 rpm |
| Nlim (grease) | 500 rpm |
| Min operating temperature, Tmin | -20 °C |
| Max operating temperature, Tmax | 120 °C |
| Characteristic cage frequency, FTF | 0.47 Hz |
| Characteristic rolling element frequency, BSF | 16.7 Hz |
| Characteristic outer ring frequency, BPF0 | 12.7 Hz |
| Characteristic inner ring frequency, BPFI | 14.31 Hz |
| da min | 686 mm |
| Da max | 804 mm |
| ra max | 3 mm |
Detailed Parameters
parameter：
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