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NU311EMJ30 - SNR

NU311EMJ30

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.

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Technical datasheet

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Specs

PRODUCT DIMENSIONS

Internal diameter (d) 55 mm
External diameter (D) 120 mm
Bearing/Inner ring width (B) 29 mm
Upper roller diameter E 106,5 mm
Under roller diameter F 70,5 mm
OR flange inner diameter D1 101,4 mm
Min fillet radius (rs) 2 mm
Min fillet radius r1s 2 mm
Radial clearance class C3
Mass 1,64 kg
Brand SNR
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PRODUCT PERFORMANCE

Dynamic load (C) 137 kN
Static load (C0) 143 kN
Fatigue limit load (Cu) 17,4 kN
Reference thermal speed (Nref) 5300 tr/min
Mechanical Limit Speed (Nlim) 9200 tr/min
Nlim (oil) 5600 tr/min
Nlim (grease) 4700 tr/min
Min operating temperature (Tmin) -40 °C
Max operating temperature (Tmax) 120 °C
Characteristic cage frequency, FTF 0,398 Hz
Characteristic rolling element frequency, BSF 4,713 Hz
Characteristic outer ring frequency, BPF0 5,178 Hz
Characteristic inner ring frequency, BPFI 7,822 Hz

ABUTMENT

Min shoulder diameter IR (da min) 64 mm
Small face shoulder max diameter da max 69 mm
Max shoulder diameter OR (Da max) 111 mm
Max fillet radius ra max 2 mm
Maxi fillet radius r1a 2 mm
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