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Spherical roller bearings

22308EG15KW33C3 - SNR

22308EG15KW33C3

Spherical roller bearing, polyamide cage, groove and lubrication holes on outer ring, 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 offers as standard, unsurpassed endurance and longevity.

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter40 mm
D - External diameter90 mm
B - Bearing/Inner ring width33 mm
d2 - External diameter inner ring52,5 mm
D1 - Inner diameter outer ring77 mm
rs - Min fillet radius1,5 mm
Number of lubrication holes3
b - Groove width6 mm
k - Hole diameter3 mm
Associated sleeve referenceH2308
Radial clearance classC3
Mass0,98 kg
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PRODUCT PERFORMANCE
C - Dynamic load169 kN
C0 - Static load152 kN
Cu - Fatigue limit load18,5 kN
e - Coefficient0.36
Y0 - Static axial load coefficient1.83
Y1 - Lower axial load coefficient1.87
Y2 - Upper axial load coefficient2.79
N ref - Reference thermal speed5800 tr/min
N lim - Mechanical Limit Speed7400 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)5,672 Hz
BPFI - Over rolling frequency on inner (60 rpm)8,328 Hz
BSF - Over rolling frequency on rolling element (60 rpm)4,943 Hz
BRF - Rotational frequency – rolling element (60 rpm)2,472 Hz
FTF - Rotational frequency - cage (60 rpm)0,405 Hz
ABUTMENT
da max - Max shoulder diameter IR0 mm
da min - Min shoulder diameter IR49 mm
db - Min diameter for Sleeve45 mm
Ce - Min length fro Sleeve5 mm
Da max - Max shoulder diameter OR81 mm
ra max - Max shaft & housing fillet radius1,5 mm
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