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21311VW33 - SNR


Spherical roller bearing, pressed steel cage, groove and lubrication holes on outer ring

The spherical roller bearing withstands significant loads and misalignments. This type of roller bearing is well adapted to harsh operating conditions: impacts or vibrations (crushers, vibrating screens, heavy handling, etc.). With the ULTAGE design, NTN-SNR offers as standard, unsurpassed endurance and longevity.


CAD file

Technical datasheet

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Internal diameter d 55 mm
External diameter D 120 mm
Bearing/Inner ring width(B) 29 mm
External diameter inner ring d2 73,6 mm
Inner diameter outer ring D1 102 mm
Min fillet radius rs 2 mm
Number of lubrication holes 3 or 4
Groove width (b) 10,18 mm
Hole diameter (k) 3 mm
Coef e 0.24
Lower axial load coef (Y1) 2.83
Upper axial load coef (Y2) 4.21
Static axial load coef (Y0) 2.76
Radial clearance class CN
Mass 1,537 kg
Brand SNR
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Dynamic load, C 172 kN
Static load, C0 164 kN
Fatigue limit load, Cu 20 kN
Reference thermal speed (Nref) 5000 tr/min
Mechanical Limit Speed Nlim 6900 tr/min
Min operating temperature, Tmin -40 °C
Max operating temperature, Tmax 200 °C
Characteristic cage frequency, FTF 0,417 Hz
Characteristic rolling element frequency, BSF 5,81 Hz
Characteristic outer ring frequency, BPF0 6,26 Hz
Characteristic inner ring frequency, BPFI 8,74 Hz


Max shoulder diameter IR da max 0 mm
Min shoulder diameter IR da min 66 mm
Max shoulder diameter OR Da max 109 mm
Max shaft & housing fillet radius ra max 2 mm
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