DEMARK (Beijing) Automation Technology Co., Ltd.
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Needle Roller Bearing
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NA Series
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Dimension and Parameters
Bearing Designation
Current Code :
NA4917
Original Code :
4544917
Shaft Diameter（mm） :
80
Weight(Kg) :
1250
Boundary Dimensions(mm)
d :
85
Fw :
100
D :
120
C :
B :
35
Basic Load Rating(N)
Dynamic :
111000
Static :
237000
Limiting Speed(rpm)
Oil :
4600
