NTN Bearings Model
NTN 7E-HMK3230 NTN Drawn Cup Needle Roller Bearings
7E-HMK3230 Bearing dimensions and specification in NTN catalogue:
| C | 30 mm |
| D | 42 mm |
| Cr | 41.5 kN |
| Dw | 4 mm |
| Fw | 32 mm |
| Lw | 24.8 mm |
| C0r | 64.5 kN |
| Mass | 0.09 kg |
| Nlim (oil) | 7,500 rpm |
| Nlim (grease) | 5,000 rpm |
NTN 7E-HMK3230 NTN Drawn Cup Needle Roller Bearings Bearing Data Sheet:
| Inner ring reference | No |
| Lubrication hole on outer ring | Non/No |
| Max operating temperature, Tmax | 120 °C |
| Min operating temperature, Tmin | -20 °C |
| Characteristic cage frequency, FTF | 0.44 Hz |
| Characteristic inner ring frequency, BPFI | 9.44 Hz |
| Characteristic outer ring frequency, BPF0 | 7.56 Hz |
| Characteristic rolling element frequency, BSF | 8.89 Hz |
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