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30214U - NTN

30214U

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.

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Technical datasheet

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Specs

PRODUCT DIMENSIONS

Internal diameter d 70 mm
External diameter D 125 mm
Bearing/Inner ring width(B) 24 mm
Outer ring width (C ) 21 mm
Total width (T) 26,25 mm
External diameter inner ring d1 95 mm
Charge load application point a 25,5 mm
Min fillet radius rs 2 mm
Min fillet radius r1s 1,5 mm
Coef e 0.42
Upper axial load coef (Y2) 1.43
Static axial load coef (Y0) 0.79
Mass 1,26 kg
ISO 355 reference T3EB070
Brand NTN
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PRODUCT PERFORMANCE

Dynamic load, C 131 kN
Rating life coefficient, A2 1.0
Static load, C0 162 kN
Fatigue limit load, Cu 19,8 kN
Nlim (oil) 3900 tr/min
Nlim (grease) 2900 tr/min
Min operating temperature, Tmin -40 °C
Max operating temperature, Tmax 120 °C
Characteristic cage frequency, FTF 0,429 Hz
Characteristic rolling element frequency, BSF 6,626 Hz
Characteristic outer ring frequency, BPF0 8,576 Hz
Characteristic inner ring frequency, BPFI 11,424 Hz

ABUTMENT

Max shoulder diameter IR da max 81 mm
Min IR shoulder diameter (db min) 80 mm
Min shoulder diameter OR Da min 110 mm
Max shoulder diameter OR Da max 116,5 mm
Min OR shoulder diameter Db min 118 mm
Min clearance Ca 4 mm
Min clearance Cb 5 mm
Max fillet radius ra max 2 mm
Maxi fillet radius r1a 1,5 mm
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