4T-32209 - 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 45 mm
External diameter D 85 mm
Bearing/Inner ring width(B) 23 mm
Outer ring width (C ) 19 mm
Total width (T) 24,75 mm
External diameter inner ring d1 65 mm
Charge load application point a 20 mm
Min fillet radius rs 1,5 mm
Min fillet radius r1s 1,5 mm
Coef e 0.4
Upper axial load coef (Y2) 1.48
Static axial load coef (Y0) 0.81
Mass 0,604 kg
ISO 355 reference T3DC045
Brand NTN
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Dynamic load, C 91 kN
Rating life coefficient, A2 1.0
Static load, C0 100 kN
Fatigue limit load, Cu 12,2 kN
Nlim (oil) 5900 tr/min
Nlim (grease) 4400 tr/min
Min operating temperature, Tmin -40 °C
Max operating temperature, Tmax 120 °C
Characteristic cage frequency, FTF 0,426 Hz
Characteristic rolling element frequency, BSF 6,359 Hz
Characteristic outer ring frequency, BPF0 7,664 Hz
Characteristic inner ring frequency, BPFI 10,336 Hz


Max shoulder diameter IR da max 53 mm
Min IR shoulder diameter (db min) 53,5 mm
Min shoulder diameter OR Da min 73 mm
Max shoulder diameter OR Da max 76,5 mm
Min OR shoulder diameter Db min 81 mm
Min clearance Ca 3 mm
Min clearance Cb 5,5 mm
Max fillet radius ra max 1,5 mm
Maxi fillet radius r1a 1,5 mm
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