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4T-66225/66462 - NTN Single Row Taper Roller Bearing

4T-66225/66462 - NTN Single Row Taper Roller Bearing

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4T-66225/66462 bearing reference breakdown

Below we will break down the 4T-66225/66462 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.
d (mm) 57.15 d1 (mm) 86.5 D (mm) 117.48
B (mm) 31.75 C (mm) 23.81 T (mm) 33.34
a (mm) 32.94 e 0.63 Y2 0.96
Y0 0.53 Mass (kg) 1.54
ra max (mm) 3.5
Dynamic load C (kN) 130 Rating life coefficient A2 1.4 Static load C0 (kN) 153
Fatigue limit load Cu (kN) 18.7 Nlim (oil) (Tr/min) 4400 Nlim (grease) (Tr/min) 3300
Min operating temperature Tmin (°C) -40 Max operating temperature Tmax (°C) 120 Characteristic cage frequency FTF (Hz) 0.42
Characteristic rolling element frequency BSF (Hz) 5.74 Characteristic outer ring frequency BPF0 (Hz) 6.75 Characteristic inner ring frequency BPFI (Hz) 9.25
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