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Single row tapered roller bearings

4T-LM78349/LM78310APX2 - NTN

4T-LM78349/LM78310APX2

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.

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter35 mm
D - External diameter62 mm
B - Bearing/Inner ring width17 mm
C - Outer ring width13,6 mm
T - Total width16,7 mm
d1 - External diameter inner ring49 mm
a - Charge load application point14,4 mm
rs - Min fillet radius3,5 mm
r1s - Min fillet radius1,5 mm
Mass0,206 kg
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PRODUCT PERFORMANCE
C - Dynamic load33 kN
C0 - Static load29,2 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 speed7900 tr/min
N lim - Grease lubrication limit speed5900 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR40 mm
db min - Min IR shoulder diameter46 mm
Da max - Max shoulder diameter OR54 mm
Db min - Min OR shoulder diameter59 mm
ra max - Max fillet radius2,5 mm
r1a - Max fillet radius1,5 mm
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