4T-33110 - NTN


Tapered roller bearing, pressed steel cage

The single row tapered roller bearing is available in metric dimensions (ISO 355 and JIS B 1512 standards) and in inches (ABMA standard, metric series including J). The single row in tapered roller bearing range, is the most widely used and is generally mounted in opposition.


Technical datasheet

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Internal diameter d 50 mm
External diameter D 85 mm
Bearing/Inner ring width(B) 26 mm
Outer ring width (C ) 20 mm
Total width (T) 26 mm
External diameter inner ring d1 68 mm
Charge load application point a 20,5 mm
Min fillet radius rs 1,5 mm
Min fillet radius r1s 1,5 mm
Coef e 0.41
Upper axial load coef (Y2) 1.46
Static axial load coef (Y0) 0.8
Mass 0,583 kg
ISO 355 reference T3CE050
Brand NTN
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Dynamic load, C 96 kN
Rating life coefficient, A2 1.0
Static load, C0 121 kN
Fatigue limit load, Cu 14,8 kN
Nlim (oil) 5600 tr/min
Nlim (grease) 4200 tr/min
Min operating temperature, Tmin -40 °C
Max operating temperature, Tmax 120 °C
Characteristic cage frequency, FTF 0,439 Hz
Characteristic rolling element frequency, BSF 7,8 Hz
Characteristic outer ring frequency, BPF0 9,66 Hz
Characteristic inner ring frequency, BPFI 12,34 Hz


Max shoulder diameter IR da max 56 mm
Min IR shoulder diameter (db min) 58,5 mm
Min shoulder diameter OR Da min 74 mm
Max shoulder diameter OR Da max 76,5 mm
Min OR shoulder diameter Db min 82 mm
Min clearance Ca 4 mm
Min clearance Cb 6 mm
Max fillet radius ra max 1,5 mm
Maxi fillet radius r1a 1,5 mm
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