31307.A - SNR Single Row Taper Roller Bearing

  • £29.95

31307.A bearing reference breakdown

Below we will break down the 31307.A 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 suffix can be found at the end of the bearing number:


A - Indicates the bearing conforms to ISO and optimized capacity

The body of the bearing reference is what is left after removing the suffix and the prefix:


3 - Tapered Rollers
13 - Medium Duty, Steep Contact Angle
07 - 35mm Bore Size

d (mm) 35 D (mm) 80 B (mm) 21
C (mm) 15 T (mm) 22.75 d1 (mm) 59.1
a (mm) 25.8 rs min (mm) 2 r1s min (mm) 1.5
e 0.83 Y2 0.73 Y0 0.4
Mass (kg) 0.52
db min (mm) 45 Da min (mm) 62 Da max (mm) 71.5
Db min (mm) 76.5 Ca min (mm) 3 Cb min (mm) 7.5
ra max (mm) 2 r1a max (mm) 1.5 da max (mm) 44
Dynamic load C (kN) 69.1 Rating life coefficient A2 1 Static load C0 (kN) 77.2
Fatigue limit load Cu (kN) 9.4 Nref (Tr/min) 5500 Nlim (Tr/min) 9600
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) 5.32 Characteristic outer ring frequency BPF0 (Hz) 6.72 Characteristic inner ring frequency BPFI (Hz) 9.28

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