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Single row tapered roller bearings

4T-302/28 - NTN

4T-302/28

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 diameter28 mm
D - External diameter58 mm
B - Bearing/Inner ring width16 mm
C - Outer ring width14 mm
T - Total width17,25 mm
a - Charge load application point13 mm
rs - Min fillet radius1 mm
r1s - Min fillet radius1 mm
Mass0,203 kg
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PRODUCT PERFORMANCE
C - Dynamic load42 kN
C0 - Static load44,5 kN
A2 - Rating life coefficient1
e - Coefficient0.35
Y0 - Static axial load coefficient0.93
Y2 - Upper axial load coefficient1.7
N lim - Oil lubrication limit speed8900 tr/min
N lim - Grease lubrication limit speed6700 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR33,5 mm
db min - Min IR shoulder diameter34,5 mm
Da min - Min shoulder diameter OR49 mm
Da max - Max shoulder diameter OR52,5 mm
Db min - Min OR shoulder diameter55 mm
ra max - Max fillet radius1 mm
r1a - Max fillet radius1 mm
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