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BNK 15~
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.
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 How to order?
How to order

 

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Unit : mm

 

O.D.

Lead

No.

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

 

15

10

5.6

G0

321~971

C5

Y

L-82

Right

15.75

2.8 turn

Deflector

0

2~9.8

9

14.3

0.22

0.76

 

G2

C7

X 2 rows

0.02 or less

-

13.9

27.9

kg

kg/m

 

15

20

3

G0

321~971

C5

Y

L-85

Right

15.75

1.5 turn

Deflector

0

2~8.8

5.1

7.9

0.32

1.05

 

G2

C7

X 2 rows

0.02 or less

-

8

15.8

kg

kg/m

 

 

 

 

 

 

 

Lead angle accuracy

 

 

Unit : um

 

Effective length of screw

Lead accuracy (um)

 

(mm)

C3

C5

C7

 

Over

Less

±Ec e

±Ec e

±Ec

 

200

315

12 8

23 18

±50/300mm

 

315

400

13 10

25 20

 

400

500

15 10

27 20

 

500

630

16 12

30 23

 

630

800

18 13

35 25

 

800

1000

21 15

40 27

 

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

 

Fluctuation(Use "e" Stand for)