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Needle roller bearing, machined-ring, with inner ring

NA4910R - NTN

NA4910R

Needle roller bearing, machined-rings, with inner ring, double-side ribs, lubrication hole

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter50 mm
D - External diameter72 mm
C - Width of bearing, drawn cup or outer ring22 mm
F - Under roller diameter58 mm
rs - Min fillet radius0,6 mm
s - Max axial offset1 mm
Lubrication hole on outer ringOui/Yes
k - Hole diameter3 mm
Lubrication hole on inner ringNon/No
Radial clearance classCN
Precision classP0
Mass0,276 kg
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PRODUCT PERFORMANCE
Cr - Dynamic load rating48 kN
C0r - Static load rating80 kN
N lim - Grease lubrication limit speed4700 tr/min
N lim - Oil lubrication limit speed7000 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR54 mm
Da max - Max shoulder diameter OR68 mm
ras max - Max shaft & housing fillet radius0,6 mm