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4T-LM503349A - NTN Single Row Taper Roller Bearing
4T-LM503349A - NTN Single Row Taper Roller Bearing
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4T-LM503349A bearing reference breakdown
Below we will break down the 4T-LM503349A 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
The suffix can be found at the end of the bearing number:
Suffix
A - Denotes an internal design change (for inch items only)d (mm) | 46 | d1 (mm) | 61 | B (mm) | 18 |
e | 0.4 | Y2 | 1.49 | Y0 | 0.82 |
ra max (mm) | 3.94 |
Dynamic load C (kN) | 51 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 71 |
Fatigue limit load Cu (kN) | 8.7 | Nlim (oil) (Tr/min) | 6300 | Nlim (grease) (Tr/min) | 4700 |
Min operating temperature Tmin (°C) | -40 | Max operating temperature Tmax (°C) | 120 | Characteristic cage frequency FTF (Hz) | 0.45 |
Characteristic rolling element frequency BSF (Hz) | 9.11 | Characteristic outer ring frequency BPF0 (Hz) | 11.19 | Characteristic inner ring frequency BPFI (Hz) | 13.81 |
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