Page 55 - Carmex - Tiny Tools 2025 (Metric)

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Tiny Tools

HK Broaching Tools for Hexagon Keys

The HK broaching system has been developed to machine internal keyways inside blind or
through hole, using CNC machines.

Working Demo

To use with Carmex standard SIM Bar Holders
The holder can be located directly in the turret or
the machine spindle
Holder with rear clamping screw for full support
during operation

Available in BMK Grade only

Cutting Data

2
Material Tensile Strength (N/mm ) Feed rate (mm/min) In-feed per stroke (mm)
400-650 7000-9000 0.06-0.09
700-850 5000-6500 0.04-0.07
900-1000 4000-5500 0.03-0.05
1100-1200 3000-4500 0.02-0.04

The cutting data above is an initial recommendation and depends on the machine condition, workpiece
profile and the application clamping

A relief groove is highly recommended, if not possible a gradual volume decrease should be made
at the end of the broaching groove

The HK tool must be positioned outside of the hole/groove before each stroke
After setup and first stroke, we recommend to observe the tool and the application to make sure no
collision occurred

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