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8Q-NK40X55X30 - NTN Machined Needle Roller Bearing Without Inner Ring
8Q-NK40X55X30 - NTN Machined Needle Roller Bearing Without Inner Ring
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8Q-NK40X55X30 bearing reference breakdown
Below we will break down the 8Q-NK40X55X30 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
8Q - Denotes a nitrided cage| D (mm) | 55 | C (mm) | 30 | rs min (mm) | 1 |
| Dw (mm) | 4.5 | Lw (mm) | 23.8 | Mass (kg) | 0.19 |
| Fw (mm) | 40 | k (mm) | 3 |
| Da max (mm) | 50 | ras max (mm) | 1 |
| Cr (kN) | 49 | C0r (kN) | 79 | Nlim (grease) (Tr/min) | 0 |
| Min operating temperature Tmin (°C) | -20 | Max operating temperature Tmax (°C) | 120 | Characteristic cage frequency FTF (Hz) | 0.45 |
| Characteristic rolling element frequency BSF (Hz) | 9.79 | Characteristic outer ring frequency BPF0 (Hz) | 8.99 | Characteristic inner ring frequency BPFI (Hz) | 11.01 |
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