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NA4872 - NTN

NA4872

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

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Technical datasheet

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Specs

PRODUCT DEFINITION

d - Internal diameter 360 mm
D - External diameter 440 mm
C - Width of bearing, drawn cup or outer ring 80 mm
F - Under roller diameter 390 mm
rs - Min fillet radius 2,1 mm
s - Max axial offset 2 mm
Lubrication hole on outer ring Yes
k - Hole diameter 5 mm
Lubrication hole on inner ring No
Radial clearance class CN
Precision class P0
Mass 25,7 kg
Brand NTN
Product classification image

PRODUCT PERFORMANCE

Cr - Dynamic load rating 665 kN
C0r - Static load rating 2020 kN
Nlim - Grease lubrication limit speed 650 tr/min
Nlim - Oil lubrication limit speed 1000 tr/min
Tmin - Min operating temperature -20 °C
Tmax - Max operating temperature 120 °C

ABUTMENT

da min - Min shoulder diameter IR 371 mm
Da max - Max shoulder diameter OR 429 mm
ras max - Max shaft & housing fillet radius 2 mm