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Spherical roller bearings

22228EMW33C3 - SNR

22228EMW33C3
22228EMW33C3
22228EMW33C3
22228EMW33C3

Spherical roller bearing, one-piece machined cage, groove and lubrication holes on outer ring

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 diameter140 mm
D - External diameter250 mm
B - Bearing/Inner ring width68 mm
D1 - Inner diameter outer ring223,9 mm
rs - Min fillet radius3 mm
Number of lubrication holes3 ou 4
b - Groove width14,2 mm
k - Hole diameter7 mm
Radial clearance classC3
Mass14,4 kg
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PRODUCT PERFORMANCE
C - Dynamic load867 kN
C0 - Static load1010 kN
Cu - Fatigue limit load100 kN
e - Coefficient0.25
Y0 - Static axial load coefficient2.68
Y1 - Lower axial load coefficient2.74
Y2 - Upper axial load coefficient4.08
N ref - Reference thermal speed2500 tr/min
N lim - Mechanical Limit Speed3300 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature200 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)7,589 Hz
BPFI - Over rolling frequency on inner (60 rpm)10,412 Hz
BSF - Over rolling frequency on rolling element (60 rpm)6,137 Hz
BRF - Rotational frequency – rolling element (60 rpm)3,069 Hz
FTF - Rotational frequency - cage (60 rpm)0,422 Hz
ABUTMENT
da max - Max shoulder diameter IR0 mm
da min - Min shoulder diameter IR154 mm
Da max - Max shoulder diameter OR236 mm
ra max - Max shaft & housing fillet radius2,5 mm
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