Flowdrill Process

The Flowdrill comes into contact with the material using relatively high axial pressure and rotational speed. The generated heat makes the material soft and malleable enough to be formed and perforated. As the Flowdrill pushes into the material, some of the displaced material forms a collar around the upper surface of the workpiece. The rest of the material forms a bushing in the lower surface of the workpiece. All this happens in a matter of seconds. The resulting collar and bushing can be up to 3 times the original material thickness. The diameter of the bush is accurately determined by the cylindrical part of the Flowdrill tool.

The process does not disturb the materialís internal structure. As a result; the formed bush is remarkably strong and can be used for bearing sleeves or, when threaded in a separate process, can provide high torque threaded surfaces with very high pull out strength specifications.



The Flowdrill process can be used in any application where the material thickness does not provide support for a threaded surface or a sleeve bearing application. When you need a welded or riveted nut or a special insert, ---think Flowdrill. You will improve quality and save a lot of time and money.

Flowdrill tools can be used on Standard Drilling Machines, NC or CNC Systems with motor capacities from 1.5 to 3.5 kW. Revolution speeds (RPM) required range from 1000 to 3500 RPM.



  • Strong Bush formed is up to 3 times the materialís thickness and provides high strength pull out and high torque specifications
  • Accuracy and Consistency ---Holes are exact with low tolerance divergences
  • Clean and Environmentally Safe , No material chips are produced
  • Fast Process, ---Cycle time 2 to 6 seconds
  • Flowdrilling is suitable for a wide range of materials including Mild and Stainless Steels, Copper, Brass, Aluminum, Titanium and most malleable materials
  • Will replace costly welded and riveted nut processes.
  • Flowdrill will improve your quality and save you a lot of time and money