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4T-HM801349/HM801310 - NTN Single Row Taper Roller Bearing

4T-HM801349/HM801310 - NTN Single Row Taper Roller Bearing

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4T-HM801349/HM801310 bearing reference breakdown

Below we will break down the 4T-HM801349/HM801310 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.
HM - Indicates that the bearing is part of the heavy medium series
d (mm) 40.48 d1 (mm) 64 D (mm) 82.55
B (mm) 28.58 C (mm) 23.02 T (mm) 29.37
a (mm) 24.67 e 0.55 Y2 1.1
Y0 0.6 Mass (kg) 0.73
ra max (mm) 3.5
Dynamic load C (kN) 87 Rating life coefficient A2 1.4 Static load C0 (kN) 117
Fatigue limit load Cu (kN) 14.3 Nlim (oil) (Tr/min) 6200 Nlim (grease) (Tr/min) 4700
Min operating temperature Tmin (°C) -40 Max operating temperature Tmax (°C) 120 Characteristic cage frequency FTF (Hz) 0.43
Characteristic rolling element frequency BSF (Hz) 6.92 Characteristic outer ring frequency BPF0 (Hz) 7.8 Characteristic inner ring frequency BPFI (Hz) 10.2
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