Spherical roller bearing, pressed steel cage, groove and lubrication holes on outer ring, tapered bore 1:12, 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 DEFINITION | |
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Brand | SNR |
d - Internal diameter | 40 mm |
D - External diameter | 80 mm |
B - Bearing/Inner ring width | 28 mm |
d2 - External diameter inner ring | 47,8 mm |
D1 - Inner diameter outer ring | 73,8 mm |
rs - Min fillet radius | 1,1 mm |
Number of lubrication holes | 3 |
b - Groove width | 5,38 mm |
k - Hole diameter | 2,5 mm |
Associated sleeve reference | H2308E |
Radial clearance class | C3 |
Mass | 0,597 kg |
PRODUCT PERFORMANCE | |
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C - Dynamic load | 116 kN |
C0 - Static load | 105 kN |
Cu - Fatigue limit load | 12,8 kN |
e - Coefficient | 0.27 |
Y0 - Static axial load coefficient | 2.41 |
Y1 - Lower axial load coefficient | 2.47 |
Y2 - Upper axial load coefficient | 3.68 |
Nlim - Mechanical Limit Speed | 2300 tr/min |
Tmin - Min operating temperature | -20 °C |
Tmax - Max operating temperature | 120 °C |
BEARING FREQUENCIES | |
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BPFO - Characteristic outer ring frequency (60 rpm) | 6,641 Hz |
BPFI - Characteristic inner ring frequency (60 rpm) | 9,359 Hz |
FTF - Characteristic cage frequency (60 rpm) | 0,415 Hz |
BSF - Characteristic rolling element frequency (60 rpm) | 5,625 Hz |
ABUTMENT | |
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da max - Max shoulder diameter IR | 47,8 mm |
da min - Min shoulder diameter IR | 45,1 mm |
db - Min diameter for Sleeve | 45 mm |
Ce - Min length fro Sleeve | 10 mm |
Da max - Max shoulder diameter OR | 73,9 mm |
ra max - Max shaft & housing fillet radius | 1 mm |
