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4T-HM212049/HM212010 - NTN

4T-HM212049/HM212010

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 diameter66,675 mm
D - External diameter122,238 mm
B - Bearing/Inner ring width38,354 mm
C - Outer ring width29,718 mm
T - Total width38,1 mm
d1 - External diameter inner ring91,5 mm
a - Charge load application point27 mm
Mass1,84 kg
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PRODUCT PERFORMANCE
C - Dynamic load208 kN
C0 - Static load244 kN
Cu - Fatigue limit load29,8 kN
A2 - Rating life coefficient1
e - Coefficient0.34
Y0 - Static axial load coefficient0.98
Y2 - Upper axial load coefficient1.78
N lim - Oil lubrication limit speed4100 tr/min
N lim - Grease lubrication limit speed3100 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR75 mm
db min - Min IR shoulder diameter82 mm
Da max - Max shoulder diameter OR110 mm
Db min - Min OR shoulder diameter116 mm
ra max - Max fillet radius3,5 mm
r1a - Max fillet radius1,5 mm
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