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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Documentation
Product information
PRODUCT DEFINITION
Brand
SNR
d - Internal diameter
70 mm
D - External diameter
125 mm
B - Bearing/Inner ring width
31 mm
d2 - External diameter inner ring
84,1 mm
D1 - Inner diameter outer ring
112,7 mm
rs - Min fillet radius
1,5 mm
Number of lubrication holes
0
b - Groove width
0 mm
k - Hole diameter
0 mm
Radial clearance class
C3
Mass
1,63 kg
PRODUCT PERFORMANCE
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 ref - Reference thermal speed
4900 tr/min
N lim - Mechanical Limit Speed
6500 tr/min
Tmin - Min operating temperature
-40 °C
Tmax - Max operating temperature
200 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)
8,101 Hz
BPFI - Over rolling frequency on inner (60 rpm)
10,899 Hz
BSF - Over rolling frequency on rolling element (60 rpm)
6,573 Hz
BRF - Rotational frequency – rolling element (60 rpm)
