
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 | 190 mm |
D - External diameter | 320 mm |
B - Bearing/Inner ring width | 104 mm |
D1 - Inner diameter outer ring | 283,8 mm |
rs - Min fillet radius | 3 mm |
Number of lubrication holes | 3 ou 8 |
b - Groove width | 16,55 mm |
k - Hole diameter | 8 mm |
Associated sleeve reference | H3138 |
Radial clearance class | C4 |
Mass | 32,45 kg |
PRODUCT PERFORMANCE | |
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C - Dynamic load | 1670 kN |
C0 - Static load | 2250 kN |
Cu - Fatigue limit load | 206 kN |
e - Coefficient | 0.29 |
Y0 - Static axial load coefficient | 2.26 |
Y1 - Lower axial load coefficient | 2.32 |
Y2 - Upper axial load coefficient | 3.45 |
N ref - Reference thermal speed | 1500 tr/min |
N lim - Mechanical Limit Speed | 2000 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) | 9,579 Hz |
BPFI - Characteristic inner ring frequency (60 rpm) | 12,421 Hz |
FTF - Characteristic cage frequency (60 rpm) | 0,435 Hz |
BSF - Characteristic rolling element frequency (60 rpm) | 7,471 Hz |
ABUTMENT | |
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da max - Max shoulder diameter IR | 0 mm |
da min - Min shoulder diameter IR | 204 mm |
db - Min diameter for Sleeve | 202 mm |
Ce - Min length fro Sleeve | 9 mm |
Da max - Max shoulder diameter OR | 306 mm |
ra max - Max shaft & housing fillet radius | 2,5 mm |
