4T-HM911245/HM911210 - NTN Single Row Taper Roller Bearing
4T-HM911245/HM911210 bearing reference breakdown
Below we will break down the 4T-HM911245/HM911210 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) | 60.32 | d1 (mm) | 97.5 | D (mm) | 130.18 |
| B (mm) | 33.34 | C (mm) | 23.81 | T (mm) | 36.51 |
| a (mm) | 41.71 | rs min (mm) | 5 | r1s min (mm) | 3.3 |
| e | 0.82 | Y2 | 0.73 | Y0 | 0.4 |
| Mass (kg) | 2.12 |
| ra max (mm) | 5 |
| Dynamic load C (kN) | 156 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 186 |
| Fatigue limit load Cu (kN) | 22.7 | Nlim (oil) (Tr/min) | 3600 | Nlim (grease) (Tr/min) | 2700 |
| 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) | 5.63 | Characteristic outer ring frequency BPF0 (Hz) | 6.78 | Characteristic inner ring frequency BPFI (Hz) | 9.22 |
