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NU308 - NTN

NU308

Single row cylindrical roller bearing, floating, separable, pressed steel cage

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In the cylindrical roller bearing range, the single row roller bearing withstands high radial loads. The standard ISO ranges (NU, N, NJ, NF, NUP, NH, RNU, HJ) are available with different types of cage, bore diameters, shoulder rings.

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter40 mm
D - External diameter90 mm
B - Bearing/Inner ring width23 mm
E - Upper roller diameter77,5 mm
F - Under roller diameter53,5 mm
rs - Min fillet radius1,5 mm
r1s - Min fillet radius1,5 mm
Radial clearance classCN
Mass0,658 kg
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PRODUCT PERFORMANCE
C - Dynamic load65 kN
C0 - Static load57 kN
Cu - Fatigue limit load6,95 kN
N lim - Oil lubrication limit speed9400 tr/min
N lim - Grease lubrication limit speed8000 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR48 mm
da max - Small face shoulder max diameter51 mm
db min - Min inner ring GO diameter55 mm
Da max - Max shoulder diameter OR82 mm
ra max - Max fillet radius1,5 mm
r1a - Max fillet radius1,5 mm
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