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NA4876 - NTN

NA4876

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

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Technical datasheet

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PRODUCT DEFINITION
BrandNTN
d - Internal diameter380 mm
D - External diameter480 mm
C - Width of bearing, drawn cup or outer ring100 mm
F - Under roller diameter415 mm
rs - Min fillet radius2,1 mm
s - Max axial offset2 mm
Lubrication hole on outer ringYes
k - Hole diameter5 mm
Lubrication hole on inner ringNo
Radial clearance classCN
Precision classP0
Mass44,5 kg
Product classification image
PRODUCT PERFORMANCE
Cr - Dynamic load rating1000 kN
C0r - Static load rating2840 kN
Nlim - Grease lubrication limit speed650 tr/min
Nlim - Oil lubrication limit speed950 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)20,989 Hz
BPFI - Characteristic inner ring frequency (60 rpm)23,011 Hz
FTF - Characteristic cage frequency (60 rpm)0,477 Hz
BSF - Characteristic rolling element frequency (60 rpm)21,704 Hz
ABUTMENT
da min - Min shoulder diameter IR391 mm
Da max - Max shoulder diameter OR469 mm
ras max - Max shaft & housing fillet radius2 mm