Centerdrill

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Pull-out forces

Centerdrill Technig

 

The DIN thread which you want to produce with Centerdrill tool and Centertap threadformer will provide a extraction force of 2,2 up to 2,7 tons (example: M8 in 2mm steel).

In the first working step you will form a high-strength Centerdrill bush. In the second step you will form (no cutting!) the DIN thread with the corresponding Centertap threadformer.

Your benefit:
Production of bushes with threads in only two steps! Get bushes out of the original material, with high extraction forces! No more wobbling, loosening or twisting!

In the following table you will find information about the extraction forces from M4 up to M20 in combination with most common material thicknesses.

Pull-out forces of formed threads

Determined pull-out forces in kN for material S235JR (ST37/2)

The stated values are empirical values and vary depending on the type of former, material, and material thickness. For stainless steel the value is slightly higher. For aluminum it is much lower.

 

thread material thickness
(mm)
kN   thread material thickness
(mm)
kN
             
M4 1.0 5 - 6   M10 3.0 46 - 53
  2.0 8 - 9     4.0 68 - 72
M5 1.0 8 - 10   M12 3.0 50 - 72
  1.5 11 - 13     4.0 84 - 91
  2.0 14 - 15     5.0 84 - 106
M6 1.5 12 - 16   M16 3.0 94 - 97
  2.0 16 - 17     4.0 94 - 115
  3.0 23 - 24     5.0 126 - 141
M8 2.0 22 - 27   M20 3.0 122 - 142
  3.0 36 - 42     4.0 147 - 162
  4.0 43 - 45     5.0 196 - 200
             

 More information are available on request. Contact

Contact

Centerdrill GmbH
Valterweg 19
D-65817 Eppstein

Tel. +49 (0) 6198/5858-97
Fax. +49 (0) 6198/5858-99
Mail: info@centerdrill.de

Hotline:

Tel. +49 (0) 6198/5858-97

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Mail: support@centerdrill.de

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