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7909DF
Basic parameters
Angular contact ball bearings
Series
7909DF
Model
Main Size(mm)
45
d
68
D
12
B
24
2 B
0.6
r smin 2
0.3
r 1smin 2
Rated base load
15.7
Dynamic load Cr/kN
12.9
Static load Cor/kN
1,600
Dynamic load Cr/kgf
1,310
Static load Cor/kgf
Allowable speed(rpm)
10,000
Grease lubrication
14,000
Oil lubrication
7909
Bearing number
Point of action(mm)
22.5
a
Mass(kg)
0.15
Single column(about)
Rated base load
25.5
Dynamic load Cr/(双列) kN
25.7
Static load Cor/( Double column ) kN
2,600
Dynamic load Cr/( Double column ) kgf
2,620
Static load Cor/( Double column ) kgf
Allowable speed(rpm)( Double column )
8,100
Grease lubrication
11,000
Oil lubrication
Bearing number
DB
DB
DF
DF
DT
DT
Installation relationship size(mm)
49.5
da minmum
49.5
db minmum
63.5
Da maximum
65.5
Db maximum
0.6
r as maximun
0.3
r 1as maximun
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