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4T-67787/67720 - NTN Single Row Taper Roller Bearing
4T-67787/67720 - NTN Single Row Taper Roller Bearing
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4T-67787/67720 bearing reference breakdown
Below we will break down the 4T-67787/67720 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) | 174.62 | D (mm) | 247.65 | B (mm) | 47.62 |
| C (mm) | 38.1 | T (mm) | 47.62 | a (mm) | 52.4 |
| rs min (mm) | 3.5 | r1s min (mm) | 3.3 | e | 0.44 |
| Y2 | 1.36 | Y0 | 0.75 | Mass (kg) | 6.96 |
| ra max (mm) | 3.5 |
| Dynamic load C (kN) | 340 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 690 |
| Nlim (oil) (Tr/min) | 1700 | Nlim (grease) (Tr/min) | 1300 | Min operating temperature Tmin (°C) | -40 |
| Max operating temperature Tmax (°C) | 120 | Characteristic cage frequency FTF (Hz) | 0.47 | Characteristic rolling element frequency BSF (Hz) | 13.79 |
| Characteristic outer ring frequency BPF0 (Hz) | 16.76 | Characteristic inner ring frequency BPFI (Hz) | 19.24 |
