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4T-45291/45220 - NTN Single Row Taper Roller Bearing
4T-45291/45220 - NTN Single Row Taper Roller Bearing
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4T-45291/45220 bearing reference breakdown
Below we will break down the 4T-45291/45220 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.| d (mm) | 57.15 | d1 (mm) | 80 | D (mm) | 104.78 |
| B (mm) | 30.96 | C (mm) | 23.81 | T (mm) | 30.16 |
| a (mm) | 22.26 | e | 0.33 | Y2 | 1.8 |
| Y0 | 0.99 | Mass (kg) | 1.09 |
| ra max (mm) | 6.4 |
| Dynamic load C (kN) | 130 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 169 |
| Fatigue limit load Cu (kN) | 20.6 | Nlim (oil) (Tr/min) | 4700 | Nlim (grease) (Tr/min) | 3500 |
| 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) | 6.56 | Characteristic outer ring frequency BPF0 (Hz) | 7.69 | Characteristic inner ring frequency BPFI (Hz) | 10.31 |
