4T-LM11949 - NTN Single Row Taper Roller Bearing
4T-LM11949 - NTN Single Row Taper Roller Bearing
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4T-LM11949 bearing reference breakdown
Below we will break down the 4T-LM11949 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.LM - Denotes that the bearing is part of the light medium series
| d (mm) | 19.05 | d1 (mm) | 31 | B (mm) | 16.64 |
| e | 0.3 | Y2 | 2 | Y0 | 1.1 |
| ra max (mm) | 1.3 |
| Dynamic load C (kN) | 28.3 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 28.6 |
| Fatigue limit load Cu (kN) | 3.5 | Nlim (oil) (Tr/min) | 12000 | Nlim (grease) (Tr/min) | 8900 |
| Min operating temperature Tmin (°C) | -40 | Max operating temperature Tmax (°C) | 120 | Characteristic cage frequency FTF (Hz) | 0.4 |
| Characteristic rolling element frequency BSF (Hz) | 4.98 | Characteristic outer ring frequency BPF0 (Hz) | 5.67 | Characteristic inner ring frequency BPFI (Hz) | 8.33 |
