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4T-JLM508748/JLM508710 - NTN Single Row Taper Roller Bearing
4T-JLM508748/JLM508710 - NTN Single Row Taper Roller Bearing
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4T-JLM508748/JLM508710 bearing reference breakdown
Below we will break down the 4T-JLM508748/JLM508710 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
J - Which denotes the bearing is part of NTN's J-Line metric series, belonging to ABMA norm. Can also be associated with all other ABMA prefix (EL,EH,H,HH,HM,M,LM,L,LL)
| d (mm) | 60 | d1 (mm) | 78 | D (mm) | 95 |
| B (mm) | 24 | C (mm) | 19 | T (mm) | 24 |
| a (mm) | 21 | e | 0.4 | Y2 | 1.49 |
| Y0 | 0.82 | Mass (kg) | 0.61 |
| ra max (mm) | 5 |
| Dynamic load C (kN) | 83 | Rating life coefficient A2 | 1.4 | Static load C0 (kN) | 122 |
| Fatigue limit load Cu (kN) | 14.9 | Nlim (oil) (Tr/min) | 4900 | Nlim (grease) (Tr/min) | 3700 |
| 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) | 9.12 | Characteristic outer ring frequency BPF0 (Hz) | 10.3 | Characteristic inner ring frequency BPFI (Hz) | 12.7 |
