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K81220 - NTN Thrust Cylindrical Roller Bearing Cage
K81220 - NTN Thrust Cylindrical Roller Bearing Cage
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K81220 bearing reference breakdown
Below we will break down the K81220 bearing reference and provide an explanation for each section provided it can actually be broken down. We can split it into 3 parts the prefix, suffix and body of the item code.
The prefix can be found at the beginning of the bearing code:
Prefix
K - Cage assembly| Dc1 (mm) | 100 | Dc (mm) | 150 | Dw (mm) | 15 |
| Lw (mm) | 15 | Ea (mm) | 140 | Eb (mm) | 109.2 |
| Cage assembly mass (kg) | 0.62 |
| Ca (kN) | 243 | C0a (kN) | 795 | Nlim (grease) (Tr/min) | 480 |
| Nlim (oil) (Tr/min) | 1900 | Min operating temperature Tmin (°C) | -20 | Max operating temperature Tmax (°C) | 120 |
| Characteristic cage frequency FTF (Hz) | 0.5 | Characteristic rolling element frequency BSF (Hz) | 8.31 | Characteristic outer ring frequency BPF0 (Hz) | 9 |
| Characteristic inner ring frequency BPFI (Hz) | 9 |
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