
Spherical roller bearing, pressed steel cage, groove and lubrication holes on outer ring, tapered bore 1:30, non ISO width, contact seals on both sides
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 | 180 mm |
D - External diameter | 280 mm |
B - Bearing/Inner ring width | 100 mm |
d2 - External diameter inner ring | 202,5 mm |
D1 - Inner diameter outer ring | 249 mm |
rs - Min fillet radius | 2,1 mm |
Number of lubrication holes | 3 ou 4 |
b - Groove width | 11,8 mm |
k - Hole diameter | 5 mm |
Associated sleeve reference | H24036 |
Radial clearance class | C3 |
Mass | 21,2 kg |
PRODUCT PERFORMANCE | |
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C - Dynamic load | 1270 kN |
C0 - Static load | 1830 kN |
Cu - Fatigue limit load | 173 kN |
e - Coefficient | 0.31 |
Y0 - Static axial load coefficient | 2.16 |
Y1 - Lower axial load coefficient | 2.21 |
Y2 - Upper axial load coefficient | 3.29 |
N ref - Reference thermal speed | 1500 tr/min |
N lim - Mechanical Limit Speed | 2200 tr/min |
Tmin - Min operating temperature | -40 °C |
Tmax - Max operating temperature | 200 °C |
BEARING FREQUENCIES | |
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BPFO - Over rolling frequency on outer ring (60 rpm) | 10,648 Hz |
BPFI - Over rolling frequency on inner (60 rpm) | 13,352 Hz |
BSF - Over rolling frequency on rolling element (60 rpm) | 8,586 Hz |
BRF - Rotational frequency – rolling element (60 rpm) | 4,293 Hz |
FTF - Rotational frequency - cage (60 rpm) | 0,444 Hz |
ABUTMENT | |
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da min - Min shoulder diameter IR | 190,2 mm |
Da max - Max shoulder diameter OR | 269,8 mm |
ra max - Max shaft & housing fillet radius | 2 mm |