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BNK 08~
THK BNK Precision Ball Screws

   Material   

Nut hardness

Shaft hardness

SCM415

HRC22 - 34

Turning the face
HRC58 - 64
End of shaft end
HRC22 - 34
Video  3D view Specification of product PDF
  
BNK
 
 
 
 
 
 
 
 
      
※ Please refer to the specifications for details.
 2D drawing download  3D drawing download
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 How to order?
How to order

 

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Unit : mm

 

O.D.

Lead

No.

gasket

Clearance
symbol

L

Accuracy

Shaft

S

Threading
direction

Ball
diameter

No.

Circulation
method

Axial
clearance

Preload

Basic load rating

Mass

 

of

Designated

end

of

 torqe

Ca

Ca

Nut

Shaft

 

loop

units 1mm

Finish

circuits

Ncm

(Dynanic)kN

(Static state)kN

 

O8

O1

3

G0

115~225

C3

Y

L-49

Right

8.2

1 turn
X
3 rows

Deflector

0

1.8 or
less

0.64

1.4

0.024
kg/m

0.29
kg

 

C5

 

G2

C7

0.02 or less

 

O8

O2

3

RR

G0

125~235

C3

Y

L-50

Right

8.3

1 turn
X
3 rows

Deflector

0

2.0 or
less

1.4

2.3

0.034
 kg/m

0.27
kg

 

C5

 

G2

C7

0.02 or less

 

O8

10

3

GT

205~405

C5

Y

L-51

Right

8.4

1.5turn
X2 rows

Deflector

0.005 or less

2.16

3.82

0.049
kg/m

0.30
kg

 

G2

C7

0.02 or less

 

 

 

 

 

 

 

Lead angle accuracy

 

Unit : um

 

Effective length of screw

Lead accuracy (um)

 

(mm)

C3

C5

C7

 

Over

Less

±Ec      e 

±Ec      e 

±Ec

 

100

8         8

18     18

±50/300mm

 

100

200

10       8

20     18

 

Representative travel distance error (Use "±Ec" Stand for)

 

Fluctuation(Use "e" Stand for)