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Self aligning ball bearing
1221-M Self-aligning Ball Bearings
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Spherical Roller Bearings
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Housed Units
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Main Dimensions & Performance Data
d
105 mm
D
190 mm
B
36 mm
Cr
75000 N
Cor
32500 N
Cur
1690 N
Reference speed
4350 rpm
Limiting speed
5700 rpm
Mounting dimensions
da min
117 mm
Shaft shoulder minimum diameter
r min
2.1 mm
Minimum chamfer size
D1
155.2 mm
Inner ring rib diameter
Da max
178 mm
Maximum diameter of housing shoulder
d1
133.9 mm
Inner ring rib diameter
ra max
2.1 mm
Maximum pocket radius
Temperature range
T min
-30 °C
Minimum operating temperature
T max
150 °C
Maximum operating temperature
Calculation coefficient
e
0.18
Fa\/Fr corresponds to different X and Y coefficients
Y1
3.52
Axial dynamic load factor
Y2
5.45
Axial dynamic load factor
Y0
3.69
Axial static load factor