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NA4876 - NTN


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


Technical datasheet

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Internal diameter (d) 380 mm
External diameter (D) 480 mm
Width of bearing, drawn cup or outer ring (C) 100 mm
Under roller diameter F 415 mm
Min fillet radius (rs) 2,1 mm
Max axial offset s max 2 mm
Lubrication hole on outer ring Yes
Hole diameter (k) 5 mm
Lubrication hole on inner ring No
Radial clearance class CN
Precision class P0
Mass 44,5 kg
Brand NTN
Product classification image


Dynamic load rating (Cr) 1000 kN
Static load rating (C0r) 2840 kN
Nlim (grease) 650 tr/min
Nlim (oil) 950 tr/min
Min operating temperature (Tmin) -20 °C
Max operating temperature (Tmax) 120 °C
Characteristic cage frequency, FTF 0,477 Hz
Characteristic rolling element frequency, BSF 21,704 Hz
Characteristic outer ring frequency, BPF0 20,989 Hz
Characteristic inner ring frequency, BPFI 23,011 Hz


Min shoulder diameter IR (da min) 391 mm
Max shoulder diameter OR (Da max) 469 mm
Max shaft & housing fillet radius (ras max) 2 mm