Download Digital Catalog

Call Us

0(212) 798-2855

Operating Hours

Mon-Fri 08:00-18:30

Write To Us

What is the broaching tool?

Broaching tool is the name given to the tools that process simple or complex forms in the hole or on the surface of the part by means of appropriate apparatus and machine systems by moving the single axis in series and precisely by machining them with their stepped teeth.
The broaching tool is specially designed for the piece to be machined. In the design of the broaching tool, the dimensional details of the part to be machined, material type and hardness, heat treatment conditions are taken into account.

A typical pull-type round broaching tool has front holder area, cutting area, and a rear holder area.
The front holder area is specially designed for every boraching tool in accordance with the holder head and the rear holder mechanism for the broaching machine. Pilot area is located just behind the front holder. This area undertakes the task of axising the precision turned part to the broaching tool teeth just before the broaching tool start to cut. Before broaching, it is desired that the part hole fits snugly to this front shaft. The broaching tool adapts to the axis of the part hole while creating a form by removing chips, and if the part hole is wider than necessary, the axis of the form may be formed a little off the desired axis. For this reason, precision turning of the hole before broaching is an important process. The design of the area where the teeth are located is very critical and the design must be made by a specialist. Fast chip removal takes place in the roughing area, depending on the material type, broaching length and the form to be created, the loads and chip storage zone values ​​that will come to the tool should be calculated properly and the design should be made in accordance with this calculation.

Design elements include many parameters, each of the dimensions used in the determination of tooth form has a critical importance. Results such as rapid blunting, short tool life, breakage of teeth, breakage of the tool, increased machine loads, and unwanted deformations on the part surface may occur in the wrongly designed broaching tool.
Before finishing, the teeth create the desired form in the part with high surface quality by cutting with light passes. Especially in internal gear forms, it is important to create precise tooth flank forms that assume function. The tooth flank forms will determine the quality, life and efficiency of the gear. The final form is formed in the finishing area and the calibrated teeth in the last part ensure that the broaching tool cuts in the desired form. It ensures that the final form after periodic sharpening is not affected by these operations.
The rear holder area, on the other hand, is used to automatically catch heavy broaches by the rear holder mechanism and lift them into the air. If the broach is placed and lifted by hand, the rear holder part is not needed, but if the broach is heavy or if multiple broaches are used at the same time, the broaching tools are manufactured with the rear holder to be used with the rear holder system to save time.

Advantages of Broaching Technique;

It is very fast compared to other techniques,
High precision, consistent and stable,
To provide high surface quality,
The application is simple, effortless and efficient,
The tool life is long; up to 150,000 pieces can be broached by paying attention to correct grinding periods of the broaching tool.

Areas where Broaching Tools used heavily;

Automotive industry
Aviation industry
Manufacture of hand tools
Production of racks
Weapon industry

Quality Focused

With its production understanding that does not compromise on quality, the solutions suitable for the demands of customers and after sales services; KESTAŞ has been successfully serving the machinery and manufacturing sector for many years.


We listen to you, we review your parts technical drawings, we decide together for the best solution for production with broaching tools.


We create efficient solutions for all internal hole and external surface profiling possible with broaching technology, both product-specific and multi-purpose use.


We design on broaching tools and broaching machines in accordance with DIN and ISO norms.


The informations required in the design of the broaches are;

A technical drawing of detailed measurements of your part,
Material type and heat treatment conditions,
How many units should be produced in which period.

Please send us an e-mail that indicates these informations and the technical drawing at the attachment, we will make an analysis of the conformity to the Broaching Technique within the same day and return to you.