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Single row cylindrical roller bearings

NU.318.EG15 - SNR

Single row cylindrical roller bearing, floating, separable, polyamide 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
BrandSNR
d - Internal diameter90 mm
D - External diameter190 mm
B - Bearing/Inner ring width43 mm
E - Upper roller diameter169,5 mm
F - Under roller diameter113,5 mm
D1 - OR flange inner diameter161,6 mm
rs - Min fillet radius3 mm
r1s - Min fillet radius3 mm
Radial clearance classCN
Mass5,39 kg
PRODUCT PERFORMANCE
C - Dynamic load320 kN
C0 - Static load360 kN
Cu - Fatigue limit load39,6 kN
N ref - Reference thermal speed3500 tr/min
N lim - Mechanical Limit Speed4400 tr/min
N lim - Oil lubrication limit speed3500 tr/min
N lim - Grease lubrication limit speed3000 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)5,214 Hz
BPFI - Over rolling frequency on inner (60 rpm)7,786 Hz
BSF - Over rolling frequency on rolling element (60 rpm)4,856 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,428 Hz
FTF - Rotational frequency - cage (60 rpm)0,401 Hz
ABUTMENT
da min - Min shoulder diameter IR103 mm
da max - Small face shoulder max diameter111 mm
Da max - Max shoulder diameter OR177 mm
ra max - Max fillet radius2,5 mm
r1a - Max fillet radius2,5 mm

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