
Spherical roller bearing, one-piece machined 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.
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PRODUCT DEFINITION | |
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Brand | SNR |
d - Internal diameter | 150 mm |
D - External diameter | 225 mm |
B - Bearing/Inner ring width | 56 mm |
D1 - Inner diameter outer ring | 206,6 mm |
rs - Min fillet radius | 2,1 mm |
Number of lubrication holes | 3 ou 4 |
b - Groove width | 9,96 mm |
k - Hole diameter | 4,5 mm |
Associated sleeve reference | H3030 |
Radial clearance class | C4 |
Mass | 7,5 kg |
PRODUCT PERFORMANCE | |
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C - Dynamic load | 660 kN |
C0 - Static load | 893 kN |
Cu - Fatigue limit load | 89,7 kN |
e - Coefficient | 0.21 |
Y0 - Static axial load coefficient | 3.13 |
Y1 - Lower axial load coefficient | 3.2 |
Y2 - Upper axial load coefficient | 4.77 |
N ref - Reference thermal speed | 2600 tr/min |
N lim - Mechanical Limit Speed | 3100 tr/min |
Tmin - Min operating temperature | -40 °C |
Tmax - Max operating temperature | 200 °C |
BEARING FREQUENCIES | |
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BPFO - Characteristic outer ring frequency (60 rpm) | 11,63 Hz |
BPFI - Characteristic inner ring frequency (60 rpm) | 14,37 Hz |
FTF - Characteristic cage frequency (60 rpm) | 0,447 Hz |
BSF - Characteristic rolling element frequency (60 rpm) | 9,295 Hz |
ABUTMENT | |
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da max - Max shoulder diameter IR | 0 mm |
da min - Min shoulder diameter IR | 160,2 mm |
db - Min diameter for Sleeve | 158 mm |
Ce - Min length fro Sleeve | 8 mm |
Da max - Max shoulder diameter OR | 214,8 mm |
ra max - Max shaft & housing fillet radius | 2 mm |
