6980 - NTN


The single row deep-groove ball bearing is the most popular bearing. It is available in a wide range of sizes with several possible options: sealing with shields or seals, presence of a retaining ring, varied clearances, several cage types, etc.


3D file

Technical datasheet

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d - Internal diameter 400 mm
D - External diameter 540 mm
B - Bearing/Inner ring width 65 mm
d1 - External diameter inner ring 445,2 mm
D1 - Inner diameter outer ring 494,8 mm
rs - Min fillet radius 4 mm
Radial clearance class CN
Mass 42,1 kg
Brand NTN
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C - Dynamic load 370 kN
C0 - Static load 535 kN
Cu - Fatigue limit load 16,4 kN
f0 - Coefficient 16.5
Nlim - Oil lubrication limit speed 1200 tr/min
Nlim - Grease lubrication limit speed 990 tr/min
Tmin - Min operating temperature -40 °C
Tmax - Max operating temperature 120 °C


da min - Min shoulder diameter IR 416 mm
da max - Max shoulder diameter IR 445 mm
Da max - Max shoulder diameter OR 524 mm
ra max - Max shaft & housing fillet radius 3 mm
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