4T-HM813844 - NTN Single Row Taper Roller Bearing
4T-HM813844 bearing reference breakdown
Below we will break down the 4T-HM813844 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.HM - Indicates that the bearing is part of the heavy medium series
| d (mm) | 66.68 | d1 (mm) | 100 | B (mm) | 36.51 |
| e | 0.5 | Y2 | 1.2 | Y0 | 0.66 |
| ra max (mm) | 3.5 |
| Dynamic load C (kN) | 163 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 228 |
| Fatigue limit load Cu (kN) | 27.8 | Nlim (oil) (Tr/min) | 3800 | Nlim (grease) (Tr/min) | 2900 |
| Min operating temperature Tmin (°C) | -40 | Max operating temperature Tmax (°C) | 120 | Characteristic cage frequency FTF (Hz) | 0.44 |
| Characteristic rolling element frequency BSF (Hz) | 7.34 | Characteristic outer ring frequency BPF0 (Hz) | 8.73 | Characteristic inner ring frequency BPFI (Hz) | 11.27 |
