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7200 Series > 7221A
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7221A
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Description
Bearing Numbers
Single row
:
7221A
DB
:
7221DB
DF
:
7221DF
DT
:
7221DT
Principal dimensions(mm)
d
:
105
D
:
190
B
:
36
r(min)
:
2.1
r1(min)
:
1.1
Basic load ratings(N)
Cr
:
157000
Cor
:
142000
Basic load ratings(kgf)
Cr
:
16000
Cor
:
14400
Value
fo
:
15
Limiting Speed (rpm)
Grease
:
3800
Oil
:
5000
Distance of action point(mm)
a
:
60.6
Abutment and fillet dimensions
da(min)
:
117
Da(max)
:
178
ra(max)
:
2
Weight
(kg)
:
3.84
Basic load ratings(duplex bearing) (N)
Cr
:
254000
Cor
:
283000
Basic load ratings(duplex bearing) (kgf)
Cr
:
25900
Cor
:
28900
Limiting Speed(duplex bearing) (rpm)
Grease
:
3000
Oil
:
4000
Distance of action point (duplex bearing)(a0)
back-to-back arrangement
:
121.2
face-to-face arrangement
:
49.2
Installation dimensions(duplex bearing)
db(min)
:
112
Db(max)
:
183
rb(max)
:
1
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