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4T-30310D - NTN Single Row Taper Roller Bearing
4T-30310D - NTN Single Row Taper Roller Bearing
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4T-30310D bearing reference breakdown
Below we will break down the 4T-30310D 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.The suffix can be found at the end of the bearing number:
Suffix
D - Denotes a steeper angle series (313xx = 303xxD) (for metric items only)The body of the bearing reference is what is left after removing the suffix and the prefix:
Body
3 - Tapered Rollers03 - Medium Duty Series
10 - 50mm Bore Size
| d (mm) | 50 | d1 (mm) | 81.5 | D (mm) | 110 |
| B (mm) | 27 | C (mm) | 19 | T (mm) | 29.25 |
| a (mm) | 35 | rs min (mm) | 2.5 | r1s min (mm) | 2 |
| e | 0.83 | Y2 | 0.73 | Y0 | 0.4 |
| Mass (kg) | 1.25 |
| da max (mm) | 62 | db min (mm) | 62 | Da min (mm) | 87 |
| Da max (mm) | 100 | Db min (mm) | 105 | ra max (mm) | 2 |
| Ca min (mm) | 3 | Cb min (mm) | 10 |
| Dynamic load C (kN) | 113 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 130 |
| Fatigue limit load Cu (kN) | 15.9 | Nlim (oil) (Tr/min) | 4200 | Nlim (grease) (Tr/min) | 3200 |
| 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) | 5.52 | Characteristic outer ring frequency BPF0 (Hz) | 6.76 | Characteristic inner ring frequency BPFI (Hz) | 9.24 |
