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Single row cylindrical roller bearings

N228 - NTN

N228

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 diameter140 mm
D - External diameter250 mm
B - Bearing/Inner ring width42 mm
E - Upper roller diameter221 mm
F - Under roller diameter169 mm
d1 - IR flange outer diameter179,5 mm
rNs - Min fillet radius3 mm
rs - Min fillet radius3 mm
Radial clearance classCN
Mass7,72 kg
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PRODUCT PERFORMANCE
C - Dynamic load345 kN
C0 - Static load400 kN
Cu - Fatigue limit load39,5 kN
N lim - Oil lubrication limit speed3100 tr/min
N lim - Grease lubrication limit speed2700 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR153 mm
dc min - Min inner ring GO diameter171 mm
Da max - Max shoulder diameter OR237 mm
Db min - Small face shoulder min diameter225 mm
ra max - Max fillet radius2,5 mm
r1a - Max fillet radius2,5 mm
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