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4T-30304 - NTN

4T-30304

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.

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter20 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 ring35 mm
a - Charge load application point11,5 mm
rs - Min fillet radius1,5 mm
r1s - Min fillet radius1,5 mm
Mass0,169 kg
ISO 355 referenceT2FB020
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PRODUCT PERFORMANCE
C - Dynamic load39 kN
C0 - Static load34 kN
A2 - Rating life coefficient1
e - Coefficient0.3
Y0 - Static axial load coefficient1.1
Y2 - Upper axial load coefficient2
N lim - Oil lubrication limit speed11000 tr/min
N lim - Grease lubrication limit speed8000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR28 mm
db min - Min IR shoulder diameter28,5 mm
Da min - Min shoulder diameter OR42,5 mm
Da max - Max shoulder diameter OR43,5 mm
Db min - Min OR shoulder diameter47 mm
Ca - Min clearance2 mm
Cb - Min clearance3 mm
ra max - Max fillet radius1,5 mm
r1a - Max fillet radius1,5 mm
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