4T-1780/1730 - NTN Single Row Taper Roller Bearing
4T-1780/1730 - NTN Single Row Taper Roller Bearing
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4T-1780/1730 bearing reference breakdown
Below we will break down the 4T-1780/1730 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) | 25.4 | d1 (mm) | 30.5 | D (mm) | 53.98 |
B (mm) | 19.84 | C (mm) | 15.88 | T (mm) | 19.37 |
a (mm) | 12.9 | rs min (mm) | 0.8 | r1s min (mm) | 0.8 |
e | 0.31 | Y2 | 1.95 | Y0 | 1.07 |
Mass (kg) | 0.21 |
ra max (mm) | 0.8 |
Dynamic load C (kN) | 42.5 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 46.5 |
Nlim (oil) (Tr/min) | 9600 | Nlim (grease) (Tr/min) | 7200 | Min operating temperature Tmin (°C) | -40 |
Max operating temperature Tmax (°C) | 120 | Characteristic cage frequency FTF (Hz) | 0.41 | Characteristic rolling element frequency BSF (Hz) | 5.29 |
Characteristic outer ring frequency BPF0 (Hz) | 6.16 | Characteristic inner ring frequency BPFI (Hz) | 8.84 |