4T-JM720249/JM720210 - NTN Single Row Taper Roller Bearing

  • £112.70

4T-JM720249/JM720210 bearing reference breakdown

Below we will break down the 4T-JM720249/JM720210 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:


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.
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)
M - Denotes that the bearing is part of the medium series
d (mm) 100 d1 (mm) 129 D (mm) 155
B (mm) 35 C (mm) 28 T (mm) 36
a (mm) 36.3 e 0.47 Y2 1.27
Y0 0.7 Mass (kg) 2.4
ra max (mm) 3
Dynamic load C (kN) 192 Rating life coefficient A2 1.4 Static load C0 (kN) 310
Fatigue limit load Cu (kN) 35.2 Nlim (oil) (Tr/min) 2900 Nlim (grease) (Tr/min) 2200
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) 9.74 Characteristic outer ring frequency BPF0 (Hz) 11.29 Characteristic inner ring frequency BPFI (Hz) 13.71

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