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63 Series > 638
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638
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Description
Designation
With shiled
:
638
Open type
:
638ZZ1
With seal VV
:
638VV
With seal DD
:
638DD
Principal dimensions（mm）
d
:
8
D
:
28
B
:
9
B1
:
9
r(min)
:
0.3
Basic load ratings(N)
Cr
:
4550
Cor
:
1970
Basic load ratings{kgf}
Cr
:
465
Cor
:
201
Speed ratings(rpm)
Grease
ZZ
:
28000
D·D
:
22000
Oil
Z
:
34000
Abutment and fillet dimensions (mm)
da(min)
:
10
db(max)
:
12.8
Da(Max)
:
26
Db(min)
:
22.8
ra(max)
:
0.3
rb(max)
:
0.3
Weight(g)
Open type
:
28.3
With shiled
:
28.6
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0086 166 7811 8242
info@jfzbearing.com
