4T-HH228349/HH228310 - NTN Single Row Taper Roller Bearing
4T-HH228349/HH228310 - NTN Single Row Taper Roller Bearing
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4T-HH228349/HH228310 bearing reference breakdown
Below we will break down the 4T-HH228349/HH228310 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.HH - Indicates that the bearing is heavier than heavy series
| d (mm) | 127 | d1 (mm) | 185.5 | D (mm) | 254 |
| B (mm) | 82.55 | C (mm) | 61.91 | T (mm) | 77.79 |
| a (mm) | 54.39 | e | 0.32 | Y2 | 1.87 |
| Y0 | 1.03 | Mass (kg) | 19.5 |
| ra max (mm) | 9.7 |
| Dynamic load C (kN) | 740 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 1070 |
| Fatigue limit load Cu (kN) | 108 | Nlim (oil) (Tr/min) | 1900 | Nlim (grease) (Tr/min) | 1400 |
| Min operating temperature Tmin (°C) | -40 | Max operating temperature Tmax (°C) | 120 | Characteristic cage frequency FTF (Hz) | 0.42 |
| Characteristic rolling element frequency BSF (Hz) | 5.89 | Characteristic outer ring frequency BPF0 (Hz) | 7.13 | Characteristic inner ring frequency BPFI (Hz) | 9.87 |
