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BNK 2520
THK BNK Precision Ball Screws

  Name  

Material

Hardness

Nut Part

SCM415

22~34HRC

Shaft Part

Rotate the face : HRC58~64

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

 

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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

 

25

20

3.6

G0

751~1851

C5

Y

L-141

Right

26

1.8 turn

Deflector

0

4.9~22

10.5

19

0.53

3.03kg/m

 

G2

C7

X 2 rows

0.02 or less

16.7

38

kg

 

 

 

 

 

 

 

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

 

1000

1250

24 16

46 30

 

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

 

●Fluctuation(Use "e" Stand for)