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4T-M903345 - NTN Single Row Taper Roller Bearing
4T-M903345 - NTN Single Row Taper Roller Bearing
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4T-M903345 bearing reference breakdown
Below we will break down the 4T-M903345 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
4T - The 4T- prefix designates a tapered roller bearing that is made of a special grade of case-hardened bearing steel and is interchangeable with other manufacturers taper with the same part number.M - Denotes the bearing as being part of the medium series
| d (mm) | 41.28 | d1 (mm) | 69.5 | B (mm) | 23.81 |
| e | 0.83 | Y2 | 0.72 | Y0 | 0.4 |
| ra max (mm) | 3.5 |
| Dynamic load C (kN) | 72.5 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 81.5 |
| Fatigue limit load Cu (kN) | 9.9 | Nlim (oil) (Tr/min) | 5000 | Nlim (grease) (Tr/min) | 3800 |
| Min operating temperature Tmin (°C) | -40 | Max operating temperature Tmax (°C) | 120 | Characteristic cage frequency FTF (Hz) | 0.43 |
| Characteristic rolling element frequency BSF (Hz) | 5.91 | Characteristic outer ring frequency BPF0 (Hz) | 6.84 | Characteristic inner ring frequency BPFI (Hz) | 9.16 |
