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4T-LM300849/LM300811 - NTN

4T-LM300849/LM300811

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 diameter41 mm
D - External diameter67,975 mm
B - Bearing/Inner ring width18 mm
C - Outer ring width13,5 mm
T - Total width17,5 mm
d1 - External diameter inner ring54,5 mm
a - Charge load application point13,9 mm
Mass0,239 kg
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PRODUCT PERFORMANCE
C - Dynamic load46 kN
C0 - Static load62,5 kN
Cu - Fatigue limit load7,6 kN
A2 - Rating life coefficient1
e - Coefficient0.35
Y0 - Static axial load coefficient0.95
Y2 - Upper axial load coefficient1.72
N lim - Oil lubrication limit speed7000 tr/min
N lim - Grease lubrication limit speed5300 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR45 mm
db min - Min IR shoulder diameter52 mm
Da max - Max shoulder diameter OR61 mm
Db min - Min OR shoulder diameter65 mm
ra max - Max fillet radius3,94 mm
r1a - Max fillet radius1,5 mm
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