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Single row tapered roller bearings

4T-3872/3820 - NTN

4T-3872/3820

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 diameter34,925 mm
D - External diameter85,725 mm
B - Bearing/Inner ring width30,162 mm
C - Outer ring width23,812 mm
T - Total width30,162 mm
d1 - External diameter inner ring63,5 mm
a - Charge load application point22,062 mm
Mass0,902 kg
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PRODUCT PERFORMANCE
C - Dynamic load116 kN
C0 - Static load132 kN
Cu - Fatigue limit load16,1 kN
A2 - Rating life coefficient1
e - Coefficient0.4
Y0 - Static axial load coefficient0.82
Y2 - Upper axial load coefficient1.49
N lim - Oil lubrication limit speed6000 tr/min
N lim - Grease lubrication limit speed4500 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR46 mm
db min - Min IR shoulder diameter53 mm
Da max - Max shoulder diameter OR73 mm
Db min - Min OR shoulder diameter81 mm
ra max - Max fillet radius3,5 mm
r1a - Max fillet radius3,3 mm
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