4T-H212749/H212710 - NTN Single Row Taper Roller Bearing
4T-H212749/H212710 bearing reference breakdown
Below we will break down the 4T-H212749/H212710 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.H - Indicates that the bearing is part of the heavy series
| d (mm) | 65.99 | D (mm) | 123.98 | B (mm) | 41.5 |
| C (mm) | 34 | T (mm) | 41.5 | a (mm) | 29.7 |
| rs min (mm) | 7.14 | r1s min (mm) | 3.56 | e | 0.33 |
| Y2 | 1.8 | Y0 | 0.99 | Mass (kg) | 2.13 |
| ra max (mm) | 7 |
| Dynamic load C (kN) | 205 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 277 |
| Nlim (oil) (Tr/min) | 4000 | Nlim (grease) (Tr/min) | 3000 | 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) | 6.27 |
| Characteristic outer ring frequency BPF0 (Hz) | 7.21 | Characteristic inner ring frequency BPFI (Hz) | 9.79 |
