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6311ZZC4/5K - NTN Single Row Deep Groove Ball Bearing

6311ZZC4/5K - NTN Single Row Deep Groove Ball Bearing

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6311ZZC4/5K bearing reference breakdown

Below we will break down the 6311ZZC4/5K 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:


ZZ - Denotes a steel shield
C4 - Indicates a radial internal clearance, C4 class
5K - Denotes universal grease for sealed and shielded bearings (-40°C up to +150°C)

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


63 - Metric, Light Series Deep Groove Ball Bearing
11 - 55mm Bore Size

d (mm) 55 D (mm) 120 B (mm) 29
rs min (mm) 2 Mass (kg) 1.37
da min (mm) 64 Da max (mm) 111 ra max (mm) 2
Dynamic load C (kN) 71.5 Static load C0 (kN) 45 Fatigue limit load Cu (kN) 2.05
f0 13.2 Nlim (grease) (Tr/min) 5800 Min operating temperature Tmin (°C) -20
Max operating temperature Tmax (°C) 120 Characteristic cage frequency FTF (Hz) 0.38 Characteristic rolling element frequency BSF (Hz) 4.08
Characteristic outer ring frequency BPF0 (Hz) 3.07 Characteristic inner ring frequency BPFI (Hz) 4.93
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