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N238 - NTN


Single row cylindrical roller bearing, floating, separable, brass cage

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.


3D file

Technical datasheet

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d - Internal diameter190 mm
D - External diameter340 mm
B - Bearing/Inner ring width55 mm
E - Upper roller diameter299 mm
F - Under roller diameter231 mm
d1 - IR flange outer diameter244,5 mm
rs - Min fillet radius4 mm
r1s - Min fillet radius4 mm
Radial clearance classCN
Mass20,8 kg
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C - Dynamic load615 kN
C0 - Static load770 kN
Cu - Fatigue limit load70 kN
Nlim - Oil lubrication limit speed2200 tr/min
Nlim - Grease lubrication limit speed1900 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
da min - Min shoulder diameter IR206 mm
Da max - Max shoulder diameter OR324 mm
Db min - Small face shoulder min diameter303 mm
Dc max - Max outer ring GO diameter296 mm
ra max - Max fillet radius3 mm
r1a - Max fillet radius3 mm
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