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.
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PRODUCT DEFINITION | |
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Brand | SNR |
d - Internal diameter | 25 mm |
D - External diameter | 52 mm |
B - Bearing/Inner ring width | 18 mm |
D1 - Inner diameter outer ring | 45,5 mm |
rs - Min fillet radius | 1 mm |
Number of lubrication holes | 3 |
b - Groove width | 3 mm |
k - Hole diameter | 1,5 mm |
Radial clearance class | C3 |
Mass | 0,16 kg |
PRODUCT PERFORMANCE | |
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C - Dynamic load | 54,2 kN |
C0 - Static load | 42,8 kN |
Cu - Fatigue limit load | 5,2 kN |
e - Coefficient | 0.34 |
Y0 - Static axial load coefficient | 1.96 |
Y1 - Lower axial load coefficient | 2 |
Y2 - Upper axial load coefficient | 2.98 |
Nref - Reference thermal speed | 14000 tr/min |
Nlim - Mechanical Limit Speed | 17000 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) | 5,241 Hz |
BPFI - Characteristic inner ring frequency (60 rpm) | 7,759 Hz |
FTF - Characteristic cage frequency (60 rpm) | 0,403 Hz |
BSF - Characteristic rolling element frequency (60 rpm) | 4,85 Hz |
ABUTMENT | |
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da max - Max shoulder diameter IR | 0 mm |
da min - Min shoulder diameter IR | 30,6 mm |
Da max - Max shoulder diameter OR | 46,4 mm |
ra max - Max shaft & housing fillet radius | 1 mm |