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4T-HM803149 - NTN Single Row Taper Roller Bearing
4T-HM803149 - NTN Single Row Taper Roller Bearing
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4T-HM803149 bearing reference breakdown
Below we will break down the 4T-HM803149 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) | 44.45 | d1 (mm) | 68.5 | B (mm) | 29.37 |
e | 0.55 | Y2 | 1.1 | Y0 | 0.6 |
ra max (mm) | 3.5 |
Dynamic load C (kN) | 93.5 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 125 |
Fatigue limit load Cu (kN) | 15.2 | Nlim (oil) (Tr/min) | 5800 | Nlim (grease) (Tr/min) | 4300 |
Min operating temperature Tmin (°C) | -40 | Max operating temperature Tmax (°C) | 120 | Characteristic cage frequency FTF (Hz) | 0.43 |
Characteristic rolling element frequency BSF (Hz) | 6.91 | Characteristic outer ring frequency BPF0 (Hz) | 7.8 | Characteristic inner ring frequency BPFI (Hz) | 10.2 |
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