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Single row deep groove ball bearings

6968 - NTN

6968

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.

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter340 mm
D - External diameter460 mm
B - Bearing/Inner ring width56 mm
d1 - External diameter inner ring377 mm
D1 - Inner diameter outer ring423 mm
rs - Min fillet radius3 mm
Radial clearance classCN
Mass26,2 kg
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PRODUCT PERFORMANCE
C - Dynamic load325 kN
C0 - Static load430 kN
Cu - Fatigue limit load14,4 kN
f0 - Coefficient16.5
N lim - Oil lubrication limit speed1400 tr/min
N lim - Grease lubrication limit speed1200 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR353 mm
da max - Max shoulder diameter IR377 mm
Da max - Max shoulder diameter OR447 mm
ra max - Max shaft & housing fillet radius2,5 mm
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