Clean, Formed Thread Without Seams

SL-TAflet

SL-Taflets solve the problem of the lobes
created by the forming process on
the thread crests.

SL-Taflet

Technical Features

• SL-Taflet forming taps feature a unique combination of thread forming and removing the seams typical for thread forming.

• After forming the threads (Pictures 1.1/1.2) SL-Taflet’s side reamer cuts the crests of the formed thread thus partially or fully removing the two seams created during the forming process (Pictures 2.1/2.2).

• Compared to conventional forming taps the forming torque is reduced by approximately 20%.

Advantages in Production

• By removing the seams on the thread a smooth thread crest is created.

• The internal thread diameter is constant according to the diameter of the side reamer. This process also achieves improved concentricity of the hole and the thread.

•Since the seams are removed plating or other fluids cannot remain between the seams thus avoiding rust or other problems.

•No burrs or chips from the thread seams remain in the thread making it safe for applications in the hydraulic or medical fields.

Application

• SL-Taflets require special consideration when choosing the drill hole diameters depending on the degree of thread engagement SL-Taflets can only remove the thread crest if a minimum of thread engagement is reached.

• Therefore the drill hole diameter should be chosen to be at least 95% of thread engagement. This ensures full removal of the thread seams by the side reamer. Please refer to the table 3.1 to choose the appropriate drill hole diameter.

• It is possible to choose lower thread engagements than 95%. In such a case some thread seams may remain on the threads crest because they are lower than the internal diameter of the required thread. However, choosing low thread engagements reduces tapping torque and increases tool life.

• Choosing thread engagements above 95% increases cutting torque but also creates better compacted threads making the produced thread stronger.

Type 1.153.323-SL

SL-Taflets are available in standard sizes from M2 to M10. Upon request sizes up to M20 are possible. The side reamer can be made to manufacture different minor diameters of internal threads

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