Forming taps – for more strength

Both taps and forming taps are used to produce internal threads. In contrast to taps, forming taps or have no cutting edges or flute - at most narrow oil grooves. They work with forming edges and polygonal profiles. Since thread forming leads to compression and deformation of the fiber course, this results in col work hardening. The result is increased material strength of the formed thread.

Especially if you do not want chips, such as in blind holes, the forming tap is the first choice. According to the material to be machined, the surface of the tool can be coated. 

Suitable materials for cold forming

The formin tap is used to produce internal threads by cold forming without producing chips. It requires that the material is suitable for this. For this purpose, it must have good flow properties and a minimum elongation at break of eight percent. These requirements are met by light metals, pure and precious metals, soft steels, long-chipping non-ferrous metals and soft bronze, zinc and die-cast alloys.

Unsuitable materials

Brittle, short-chipping materials with minimal elongation - such as gray cast iron - cannot be cold formed. This also applies to high-strength steels above 1200 N/mm² or AISI alloys with more than 12 percent Si content. Here, cold forming is only possible with coated carbide thread formers. The maximum thread pitch is 4 mm and the maximum outer diameter is 60 mm.

Advantages on one view

  • Higher cutting speed
  • Improved tool life time
  • No chip accumulation: no chip jamming, no chip disposal
  • Higher material strength
  • Better surface finish
  • No pitch errors
  • No unacceptable pre-widening
  • No over/undercutting

In most cases, thread production is at the end of the process chain. This makes the quality and reliability of the threading tools more important. Our experienced application engineers will be happy to advise you on the optimum technical and economic solution for thread production.

Forming taps without oil grooves

Forming taps without oil grooves are used when you machine thin and soft materials. They are suitable for less demanding forming applications up to 1.0 x diameter, as otherwise the lubricant film, due to the lack of lubrication grooves, no longer reaches the forming edges.

Forming taps with oversize

Oversize forming taps have a tolerance that is higher by the oversize and form the thread slightly larger. After a followed heat and surface treatment of the workpiece, a thread is results in the standard tolerance.  

Special Forming taps

Do you have a special requirement for your tool that we do not have in our standard range? Then talk to us about your application. We offer you special solutions that fit your requirements exactly - even in small batch sizes. In the same way, we work individually according to your drawings and manufacture the forming tap you need.

Forming taps with oil grooves

Forming Taps with oil grooves improve the contact between the machine tap and the surface of the material. This is necessary for through hole threads and horizontal operation. You need a reinforced lubricant supply for the production of larger thread depths above 1.5 x diameter and for dimensions from 8 mm.

HSSE-PM Forming taps

HSSE-PM is a powder metallurgy produced HSSE material, which is especially characterized by higher hardness, more toughness and better grinding pattern. BAER HSSE-PM forming taps with TiN-coating have higher surface hardness and excellent sliding properties for higher cutting performance and tool life time due to the coating.

BAER-UNI-products – all-rounders for best results

BAER's UNI-products are characterized by their universal application possibilities and, at the same time, long tool live time. We have developed material structures, geometries and coatings especially with our customers in order to produce threads flexibly and efficiently.

UNIForm – Forming taps for all applications

Fast and efficient - this is how easy it is to produce internal threads mechanically with the forming tap. You can use the UNIForm-forming taps for almost all materials. Your advantage: The application is uncomplicated and the result is excellent. You have little effort and save costs at the same time. 

UNITap – Taps for all applications

The unique cutting geometry combined with the TiAIN-coating makes the UNITap an all-rounder: It can be used in almost all materials and ensures optimum results. This means you only need one tap to machine all the materials you want. This saves time and costs - a real revolution in tapping.