For UK customers only. Please choose the correct Shipment option when confirming order – Economy Express is for France orders only.


21308VKC3 - SNR


Spherical roller bearing, pressed steel 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

PLEASE LOGIN to add products to your basket
Contact us
d - Internal diameter40 mm
D - External diameter90 mm
B - Bearing/Inner ring width23 mm
d2 - External diameter inner ring53,5 mm
D1 - Inner diameter outer ring75,4 mm
rs - Min fillet radius1,5 mm
Number of lubrication holes0
b - Groove width0 mm
k - Hole diameter0 mm
Associated sleeve referenceH308
Radial clearance classC3
Mass0,705 kg
Product classification image
C - Dynamic load97,7 kN
C0 - Static load86,7 kN
Cu - Fatigue limit load10,6 kN
e - Coefficient0.26
Y0 - Static axial load coefficient2.5
Y1 - Lower axial load coefficient2.55
Y2 - Upper axial load coefficient3.8
Nref - Reference thermal speed6400 tr/min
Nlim - Mechanical Limit Speed9300 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature200 °C
BPFO - Characteristic outer ring frequency (60 rpm)5,797 Hz
BPFI - Characteristic inner ring frequency (60 rpm)8,203 Hz
FTF - Characteristic cage frequency (60 rpm)0,414 Hz
BSF - Characteristic rolling element frequency (60 rpm)5,561 Hz
da max - Max shoulder diameter IR0 mm
da min - Min shoulder diameter IR49 mm
db - Min diameter for Sleeve44 mm
Ce - Min length fro Sleeve5 mm
Da max - Max shoulder diameter OR81 mm
ra max - Max shaft & housing fillet radius1,5 mm
Product classification image
Calcul factors image

Equivalents Products