NU330C4 - NTN Single Row Cylindrical Roller Bearing

  • £1,035.37

NU330C4 bearing reference breakdown

Below we will break down the NU330C4 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:


NU - Denotes an NU type single row cylindrical roller bearing

The suffix can be found at the end of the bearing number:


C4 - Indicates a radial internal clearance of the C4 class

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


3 - Medium Duty Series
30 - 150mm Bore Size

d (mm) 150 D (mm) 320 B (mm) 65
E (mm) 277 F (mm) 193 rs min (mm) 4
r1s min (mm) 4 Mass (without HJ ring) (kg) 24.7
da min (mm) 166 Da max (mm) 304 ra max (mm) 3
r1a max (mm) 3 db min (mm) 195 da max (mm) 190
Dynamic load C (kN) 665 Static load C0 (kN) 805 Fatigue limit load Cu (kN) 76
Nlim (oil) (Tr/min) 2500 Nlim (grease) (Tr/min) 2100 Min operating temperature Tmin (°C) -40
Max operating temperature Tmax (°C) 120 Characteristic cage frequency FTF (Hz) 0.41 Characteristic rolling element frequency BSF (Hz) 5.42
Characteristic outer ring frequency BPF0 (Hz) 5.75 Characteristic inner ring frequency BPFI (Hz) 8.25

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