K81228 NTN Bore Diameter 140.000mm Thrust roller bearings
| Dc1 | 140 mm |
| Dc | 200 mm |
| Lw | 19 mm |
| Bearing ring (inner ring) WS | WS81228 |
| Bearing ring (outer ring) GS | GS81228 |
| Ea | 189 mm |
| Eb | 150.1 mm |
| Cage assembly mass | 1.2 kg |
| Ca | 370 kN |
| C0a | 1.280 kN |
| Nlim (grease) | 350 rpm |
| Nlim (oil) | 1.400 rpm |
| Min operating temperature, Tmin | -20 °C |
| Max operating temperature, Tmax | 120 °C |
| Characteristic cage frequency, FTF | 0.5 Hz |
| Characteristic rolling element frequency, BSF | 8.92 Hz |
| Characteristic outer ring frequency, BPF0 | 9 Hz |
| Characteristic inner ring frequency, BPFI | 9 Hz |
| Bearing number | K81228 |
| Brand | NTN |
| Bore Diameter (mm) | 140.000 |
| Outer Diameter (mm) | 200.000 |
| d | 140.000 mm |
| D | 200.000 mm |
| Dw | 19.000 mm |
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Detailed Parameters
parameter：
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