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21308V - SNR

21308V

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 EUROPE offers as standard, unsurpassed endurance and longevity.

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Technical datasheet

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Specs

PRODUCT DEFINITION

d - Internal diameter 40 mm
D - External diameter 90 mm
B - Bearing/Inner ring width 23 mm
d2 - External diameter inner ring 53,5 mm
D1 - Inner diameter outer ring 75,4 mm
rs - Min fillet radius 1,5 mm
Number of lubrication holes 0
b - Groove width 0 mm
Radial clearance class CN
Mass 0,715 kg
Brand SNR
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PRODUCT PERFORMANCE

C - Dynamic load 97,7 kN
C0 - Static load 86,7 kN
Cu - Fatigue limit load 10,6 kN
e - Coefficient 0.26
Y0 - Static axial load coefficient 2.5
Y1 - Lower axial load coefficient 2.55
Y2 - Upper axial load coefficient 3.8
Nref - Reference thermal speed 6400 tr/min
Nlim - Mechanical Limit Speed 9300 tr/min
Tmin - Min operating temperature -40 °C
Tmax - Max operating temperature 200 °C

ABUTMENT

da max - Max shoulder diameter IR 0 mm
da min - Min shoulder diameter IR 49 mm
Da max - Max shoulder diameter OR 81 mm
ra max - Max shaft & housing fillet radius 1,5 mm
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