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21317VMK - SNR


Spherical roller bearing, one-piece machined cage, tapered bore 1:12

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 EUROPE offers as standard, unsurpassed endurance and longevity.


3D file

Technical datasheet

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d - Internal diameter85 mm
D - External diameter180 mm
B - Bearing/Inner ring width41 mm
D1 - Inner diameter outer ring153,1 mm
rs - Min fillet radius3 mm
Number of lubrication holes0
b - Groove width0 mm
k - Hole diameter0 mm
Associated sleeve referenceH317
Radial clearance classCN
Mass5,16 kg
Product classification image
C - Dynamic load341 kN
C0 - Static load344 kN
Cu - Fatigue limit load38,4 kN
e - Coefficient0.23
Y0 - Static axial load coefficient2.93
Y1 - Lower axial load coefficient2.99
Y2 - Upper axial load coefficient4.46
Nref - Reference thermal speed3600 tr/min
Nlim - Mechanical Limit Speed4600 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature200 °C
BPFO - Characteristic outer ring frequency (60 rpm)6,705 Hz
BPFI - Characteristic inner ring frequency (60 rpm)9,295 Hz
FTF - Characteristic cage frequency (60 rpm)0,419 Hz
BSF - Characteristic rolling element frequency (60 rpm)5,949 Hz
da max - Max shoulder diameter IR0 mm
da min - Min shoulder diameter IR99 mm
db - Min diameter for Sleeve91 mm
Ce - Min length fro Sleeve7 mm
Da max - Max shoulder diameter OR166 mm
ra max - Max shaft & housing fillet radius2,5 mm
Product classification image
Calcul factors image

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