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6321ZZC3/5K - NTN


Deep groove ball bearing, radial contact, pressed steel cage, shields on both sides

The single row deep-groove ball bearing is the most popular bearing. It is available in a wide range of sizes with several possible options: sealing with shields or seals, presence of a retaining ring, varied clearances, several cage types, etc.


CAD file

Technical datasheet

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Internal diameter d 105 mm
External diameter D 225 mm
Bearing/Inner ring width(B) 49 mm
Min fillet radius rs 3 mm
Radial clearance class C3
Mass 8,05 kg
Brand NTN
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Dynamic load, C 204 kN
Static load, C0 153 kN
Fatigue limit load, Cu 9,35 kN
Coefficient f0 13.2
Nlim (grease) 3000 tr/min
Min operating temperature, Tmin -40 °C
Max operating temperature, Tmax 150 °C
Characteristic cage frequency, FTF 0,385 Hz
Characteristic rolling element frequency, BSF 4,1 Hz
Characteristic outer ring frequency, BPF0 3,076 Hz
Characteristic inner ring frequency, BPFI 4,924 Hz


Min shoulder diameter IR da min 118 mm
Max shoulder diameter OR Da max 212 mm
Max shaft & housing fillet radius ra max 2,5 mm
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