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21312V - SNR


Spherical roller bearing, pressed steel cage

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 60 mm
External diameter D 130 mm
Bearing/Inner ring width(B) 31 mm
External diameter inner ring d2 79,5 mm
Inner diameter outer ring D1 109,9 mm
Min fillet radius rs 2,1 mm
Number of lubrication holes 0
Groove width (b) 0 mm
Hole diameter (k) 0 mm
Coef e 0.24
Lower axial load coef (Y1) 2.82
Upper axial load coef (Y2) 4.19
Static axial load coef (Y0) 2.75
Radial clearance class CN
Mass 1,986 kg
Brand SNR
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Dynamic load, C 192 kN
Static load, C0 186 kN
Fatigue limit load, Cu 22,7 kN
Reference thermal speed (Nref) 4700 tr/min
Mechanical Limit Speed Nlim 6400 tr/min
Min operating temperature, Tmin -40 °C
Max operating temperature, Tmax 200 °C
Characteristic cage frequency, FTF 0,419 Hz
Characteristic rolling element frequency, BSF 5,915 Hz
Characteristic outer ring frequency, BPF0 6,281 Hz
Characteristic inner ring frequency, BPFI 8,719 Hz


Max shoulder diameter IR da max 0 mm
Min shoulder diameter IR da min 72 mm
Max shoulder diameter OR Da max 118 mm
Max shaft & housing fillet radius ra max 2 mm
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