4T-30205 - 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.


3D file

Technical datasheet

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d - Internal diameter25 mm
D - External diameter52 mm
B - Bearing/Inner ring width15 mm
C - Outer ring width13 mm
T - Total width16,25 mm
d1 - External diameter inner ring38 mm
a - Charge load application point12,5 mm
rs - Min fillet radius1 mm
r1s - Min fillet radius1 mm
Mass0,155 kg
ISO 355 referenceT3CC025
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C - Dynamic load35 kN
C0 - Static load34 kN
Cu - Fatigue limit load4,15 kN
A2 - Rating life coefficient1
e - Coefficient0.37
Y0 - Static axial load coefficient0.88
Y2 - Upper axial load coefficient1.6
Nlim - Oil lubrication limit speed9800 tr/min
Nlim - Grease lubrication limit speed7300 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
da max - Max shoulder diameter IR31 mm
db min - Min IR shoulder diameter30,5 mm
Da min - Min shoulder diameter OR44 mm
Da max - Max shoulder diameter OR46,5 mm
Db min - Min OR shoulder diameter48 mm
Ca - Min clearance2 mm
Cb - Min clearance3 mm
ra max - Max fillet radius1 mm
r1a - Max fillet radius1 mm
Product classification image
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