1220KC3 - SNR Double Row Self-Aligning Ball Bearing

  • £100.61

1220KC3 bearing reference breakdown

Below we will break down the 1220KC3 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:


C3 - Denotes a radial internal clearance of the C3 class
K - Which indicates a tapered bore, taper 1:12

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


12 - Extra Narrow Series
20 - 100mm Bore Size

d (mm) 100 D (mm) 180 B (mm) 34
d1 (mm) 127.2 D1 (mm) 153.4 rs min (mm) 2.1
e 0.17 Y1 3.64 Y2 5.63
Y0 3.81 Mass (kg) 3.73
da min (mm) 111 Da max (mm) 169 da max (mm) 124
db min (mm) 106 Ce min (mm) 7 ra max (mm) 2
Dynamic load C (kN) 68.4 Static load C0 (kN) 29.7 Nref (Tr/min) 4600
Nlim (Tr/min) 4800 Min operating temperature Tmin (°C) -40 Max operating temperature Tmax (°C) 120
Characteristic cage frequency FTF (Hz) 0.44 Characteristic rolling element frequency BSF (Hz) 7.93 Characteristic outer ring frequency BPF0 (Hz) 8.77
Characteristic inner ring frequency BPFI (Hz) 11.23

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