
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 information
PRODUCT DEFINITION | |
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Brand | SNR |
d - Internal diameter | 75 mm |
D - External diameter | 125 mm |
B - Bearing/Inner ring width | 38 mm |
d2 - External diameter inner ring | 81,2 mm |
D1 - Inner diameter outer ring | 117,1 mm |
rs - Min fillet radius | 1,5 mm |
Number of lubrication holes | 3 |
b - Groove width | 7,37 mm |
k - Hole diameter | 3,5 mm |
Radial clearance class | CN |
Mass | 1,89 kg |
PRODUCT PERFORMANCE | |
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C - Dynamic load | 235 kN |
C0 - Static load | 240 kN |
Cu - Fatigue limit load | 29,3 kN |
e - Coefficient | 0.22 |
Y0 - Static axial load coefficient | 2.94 |
Y1 - Lower axial load coefficient | 3.01 |
Y2 - Upper axial load coefficient | 4.48 |
N lim - Mechanical Limit Speed | 1400 tr/min |
Tmin - Min operating temperature | -20 °C |
Tmax - Max operating temperature | 120 °C |
BEARING FREQUENCIES | |
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BPFO - Over rolling frequency on outer ring (60 rpm) | 8,103 Hz |
BPFI - Over rolling frequency on inner (60 rpm) | 10,897 Hz |
BSF - Over rolling frequency on rolling element (60 rpm) | 6,578 Hz |
BRF - Rotational frequency – rolling element (60 rpm) | 3,289 Hz |
FTF - Rotational frequency - cage (60 rpm) | 0,426 Hz |
ABUTMENT | |
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da max - Max shoulder diameter IR | 81,2 mm |
da min - Min shoulder diameter IR | 79 mm |
db - Min diameter for Sleeve | 0 mm |
Da max - Max shoulder diameter OR | 117,1 mm |
ra max - Max shaft & housing fillet radius | 1,5 mm |