Horn Expands Slot Broaching Portfolio with New Type 117 Inserts

Inserts Horn expands slot broaching system with new type 117 inserts

2026-02-17 Source: Horn Cutting Tools 1 min Reading Time

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German toolmaker Horn has expanded its slot broaching portfolio with new type 117 inserts for internal diameters from 9 mm, targeting higher tool life and lower cost per cutting edge.

Horn is expanding its slot broaching system with new type 117 inserts, which are suitable for internal diameters from 9 mm.(Source: Horn) — Horn is expanding its slot broaching system with new type 117 inserts, which are suitable for internal diameters from 9 mm.
(Source: Horn)

German tooling manufacturer Horn has expanded its slot broaching system with a large range of new type 117 inserts, which are suitable for internal diameters from 9 mm. The company has developed a new carbide blank specifically for the insert family. The tool system is sustainable thanks to the low carbide content and it has an advantageous price per cutting edge. The tools are suitable for numerous processes including gear broaching, polygonal broaching and the broaching of keyways.

Horn Product Manager Andreas Härle said, “Development of the new carbide blank required new approaches in production and metrology. Due to the small size of the inserts, we had to make significant adjustments in handling, fixture grinding and measuring.”

Gallery

Close-up of a type 117 broaching insert.(Source: Horn)

The new system has an advantage over solid carbide broaching tools in that the tool shanks enable the broaching of longer and deeper grooves. Tool lengths are 20 mm, 30 mm and 40 mm. The shank diameters of the tool holders are 16 mm and 20 mm. All types offer internal coolant supply directly to the cutting zone. Horn also offers special holders for mounting in broaching units from various manufacturers.

The portfolio of broaching tools has already demonstrated its capability during initial applications. One user previously achieved a tool life of 120 pieces when broaching a serration in a component made of hardened steel. By switching to the new Horn system, tool life increased to 1,040 parts, while maintaining the same cutting parameters. In addition to the significantly higher tool life, production costs fell due to the lower cost per cutting edge compared to that of the previously used carbide inserts.

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