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7E-HMK1725CT/8A - NTN Drawing Cup Needle Roller Bearing - Open Ended
7E-HMK1725CT/8A - NTN Drawing Cup Needle Roller Bearing - Open Ended
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7E-HMK1725CT/8A bearing reference breakdown
Below we will break down the 7E-HMK1725CT/8A 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 ringThe suffix can be found at the end of the bearing number:
Suffix
/8A - Which denotes grease alvania EP2CT - Indicates a welded cage, with special heat treament on the outer ring to increase lifespan
| Fw (mm) | 17 | D (mm) | 24 | C (mm) | 25 |
| Dw (mm) | 2.5 | Lw (mm) | 20.8 | Mass (kg) | 0.03 |
| Cr (kN) | 19.3 | C0r (kN) | 26.7 | Nlim (grease) (Tr/min) | 9500 |
| Nlim (oil) (Tr/min) | 14000 | Min operating temperature Tmin (°C) | -20 | Max operating temperature Tmax (°C) | 120 |
| Characteristic cage frequency FTF (Hz) | 0.44 | Characteristic rolling element frequency BSF (Hz) | 7.67 | Characteristic outer ring frequency BPF0 (Hz) | 6.1 |
| Characteristic inner ring frequency BPFI (Hz) | 7.9 |
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