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Needle roller bearing, machined-ring, with inner ring

NA4903LL/3AS - NTN

NA4903LL/3AS

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter17 mm
D - External diameter30 mm
B - Bearing/Inner ring width14 mm
C - Width of bearing, drawn cup or outer ring13 mm
F - Under roller diameter22 mm
rs - Min fillet radius0,3 mm
Lubrication hole on outer ringOui/Yes
k - Hole diameter2,5 mm
Lubrication hole on inner ringOui/Yes
Radial clearance classCN
Precision classP0
Mass0,039 kg
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PRODUCT PERFORMANCE
Cr - Dynamic load rating8,5 kN
C0r - Static load rating11,9 kN
N lim - Grease lubrication limit speed9000 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature100 °C
ABUTMENT
da min - Min shoulder diameter IR19 mm
Da max - Max shoulder diameter OR24 mm
Db max - Max OR shoulder diameter28 mm
ras max - Max shaft & housing fillet radius0,3 mm