
Spherical roller bearing, pressed steel 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.
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PRODUCT DEFINITION | |
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Brand | SNR |
d - Internal diameter | 260 mm |
D - External diameter | 400 mm |
B - Bearing/Inner ring width | 140 mm |
d2 - External diameter inner ring | 286,2 mm |
D1 - Inner diameter outer ring | 353,9 mm |
rs - Min fillet radius | 4 mm |
Number of lubrication holes | 3 ou 8 |
b - Groove width | 19,3 mm |
k - Hole diameter | 8 mm |
Radial clearance class | CN |
Mass | 62,42 kg |
PRODUCT PERFORMANCE | |
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C - Dynamic load | 2520 kN |
C0 - Static load | 3820 kN |
Cu - Fatigue limit load | 325 kN |
e - Coefficient | 0.31 |
Y0 - Static axial load coefficient | 2.12 |
Y1 - Lower axial load coefficient | 2.16 |
Y2 - Upper axial load coefficient | 3.22 |
N ref - Reference thermal speed | 950 tr/min |
N lim - Mechanical Limit Speed | 1600 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) | 10,642 Hz |
BPFI - Characteristic inner ring frequency (60 rpm) | 13,358 Hz |
FTF - Characteristic cage frequency (60 rpm) | 0,443 Hz |
BSF - Characteristic rolling element frequency (60 rpm) | 8,537 Hz |
ABUTMENT | |
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da max - Max shoulder diameter IR | 0 mm |
da min - Min shoulder diameter IR | 275 mm |
Da max - Max shoulder diameter OR | 385 mm |
ra max - Max shaft & housing fillet radius | 3 mm |
