4T-68462/68712 - NTN Single Row Taper Roller Bearing

  • £145.00

4T-68462/68712 bearing reference breakdown

Below we will break down the 4T-68462/68712 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) 117.48 d1 (mm) 145.5 D (mm) 180.98
B (mm) 31.75 C (mm) 25.4 T (mm) 34.92
a (mm) 40.32 rs min (mm) 3.5 r1s min (mm) 3.3
e 0.5 Y2 1.21 Y0 0.66
Mass (kg) 2.78
ra max (mm) 3.5
Dynamic load C (kN) 169 Rating life coefficient A2 1.4 Static load C0 (kN) 245
Fatigue limit load Cu (kN) 26.6 Nlim (oil) (Tr/min) 2500 Nlim (grease) (Tr/min) 1900
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) 9.52 Characteristic outer ring frequency BPF0 (Hz) 11.26 Characteristic inner ring frequency BPFI (Hz) 13.74

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