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4T-LM12749/LM12711 - NTN

4T-LM12749/LM12711

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 diameter21,986 mm
D - External diameter45,974 mm
B - Bearing/Inner ring width16,637 mm
C - Outer ring width12,065 mm
T - Total width15,494 mm
d1 - External diameter inner ring34 mm
a - Charge load application point10,094 mm
rs - Min fillet radius1,3 mm
r1s - Min fillet radius1,3 mm
Mass0,123 kg
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PRODUCT PERFORMANCE
C - Dynamic load29,6 kN
C0 - Static load34 kN
Cu - Fatigue limit load4,15 kN
A2 - Rating life coefficient1
e - Coefficient0.31
Y0 - Static axial load coefficient1.08
Y2 - Upper axial load coefficient1.96
N lim - Oil lubrication limit speed11000 tr/min
N lim - Grease lubrication limit speed8400 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR26 mm
db min - Min IR shoulder diameter27,5 mm
Da max - Max shoulder diameter OR40 mm
Db min - Min OR shoulder diameter42,5 mm
ra max - Max fillet radius1,3 mm
r1a - Max fillet radius1,3 mm
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