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4T-02872/02820 - NTN

4T-02872/02820

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.

This kit contains the following reference(s)

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter28,575 mm
D - External diameter73,025 mm
B - Bearing/Inner ring width22,225 mm
C - Outer ring width17,462 mm
T - Total width22,225 mm
d1 - External diameter inner ring54,2 mm
a - Charge load application point18,325 mm
Mass0,481 kg
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PRODUCT PERFORMANCE
C - Dynamic load62,5 kN
C0 - Static load68 kN
Cu - Fatigue limit load8,3 kN
A2 - Rating life coefficient1
e - Coefficient0.45
Y0 - Static axial load coefficient0.73
Y2 - Upper axial load coefficient1.32
N lim - Oil lubrication limit speed7000 tr/min
N lim - Grease lubrication limit speed5300 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR37 mm
db min - Min IR shoulder diameter37,5 mm
Da max - Max shoulder diameter OR62 mm
Db min - Min OR shoulder diameter68 mm
ra max - Max fillet radius0,8 mm
r1a - Max fillet radius3,3 mm
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