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Single row tapered roller bearings

4T-JM714249/JM714210PK - NTN

4T-JM714249/JM714210PK

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 diameter75 mm
D - External diameter120 mm
B - Bearing/Inner ring width29,5 mm
C - Outer ring width25 mm
T - Total width31 mm
a - Charge load application point29,1 mm
rs - Min fillet radius3 mm
r1s - Min fillet radius2,5 mm
Mass1,29 kg
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PRODUCT PERFORMANCE
C - Dynamic load145 kN
C0 - Static load197 kN
A2 - Rating life coefficient1
e - Coefficient0.44
Y0 - Static axial load coefficient0.74
Y2 - Upper axial load coefficient1.35
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 IR82,9 mm
db min - Min IR shoulder diameter88 mm
Da max - Max shoulder diameter OR115 mm
Db min - Min OR shoulder diameter108 mm
ra max - Max fillet radius3 mm
r1a - Max fillet radius2,5 mm
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