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7E-HMK1215 - NTN Drawing Cup Needle Roller Bearing - Open Ended
7E-HMK1215 - NTN Drawing Cup Needle Roller Bearing - Open Ended
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7E-HMK1215 bearing reference breakdown
Below we will break down the 7E-HMK1215 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
7E - Which indicates a case hardened outer ring| Fw (mm) | 12 | D (mm) | 19 | C (mm) | 15 |
| Dw (mm) | 2.5 | Lw (mm) | 10.3 | Mass (kg) | 0.01 |
| Cr (kN) | 9.4 | C0r (kN) | 9.9 | Nlim (grease) (Tr/min) | 13000 |
| Nlim (oil) (Tr/min) | 20000 | Min operating temperature Tmin (°C) | -20 | Max operating temperature Tmax (°C) | 120 |
| Characteristic cage frequency FTF (Hz) | 0.41 | Characteristic rolling element frequency BSF (Hz) | 5.63 | Characteristic outer ring frequency BPF0 (Hz) | 4.55 |
| Characteristic inner ring frequency BPFI (Hz) | 6.45 |
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