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4T-3780/3720 - NTN

4T-3780/3720

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 diameter50,8 mm
D - External diameter93,264 mm
B - Bearing/Inner ring width30,302 mm
C - Outer ring width23,812 mm
T - Total width30,162 mm
d1 - External diameter inner ring71,5 mm
a - Charge load application point21,862 mm
Mass0,846 kg
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PRODUCT PERFORMANCE
C - Dynamic load113 kN
C0 - Static load134 kN
Cu - Fatigue limit load16,3 kN
A2 - Rating life coefficient1
e - Coefficient0.34
Y0 - Static axial load coefficient0.97
Y2 - Upper axial load coefficient1.77
N lim - Oil lubrication limit speed5300 tr/min
N lim - Grease lubrication limit speed4000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR58 mm
db min - Min IR shoulder diameter64 mm
Da max - Max shoulder diameter OR82 mm
Db min - Min OR shoulder diameter88 mm
ra max - Max fillet radius3,5 mm
r1a - Max fillet radius3,3 mm
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