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4T-72212C/72487 - NTN

4T-72212C/72487

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 diameter53,975 mm
D - External diameter123,825 mm
B - Bearing/Inner ring width32,791 mm
C - Outer ring width25,4 mm
T - Total width36,512 mm
d1 - External diameter inner ring89,5 mm
a - Charge load application point38,012 mm
Mass2,03 kg
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PRODUCT PERFORMANCE
C - Dynamic load171 kN
C0 - Static load188 kN
Cu - Fatigue limit load22,9 kN
A2 - Rating life coefficient1
e - Coefficient0.74
Y0 - Static axial load coefficient0.45
Y2 - Upper axial load coefficient0.81
N lim - Oil lubrication limit speed3900 tr/min
N lim - Grease lubrication limit speed2900 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR67 mm
db min - Min IR shoulder diameter79 mm
Da max - Max shoulder diameter OR102 mm
Db min - Min OR shoulder diameter116 mm
ra max - Max fillet radius3,5 mm
r1a - Max fillet radius3,3 mm
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