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has expanded its DrillMeister exchangeable-head drilling tool system by adding 16 new modular drill bodies with chamfering inserts with a TungFlex connection.

Incorporating the performance of a solid-carbide drill with the efficiency of an indexable-insert drill, the DrillMeister exchangeable-head drill system now includes modular drills with chamfering inserts that enable drilling and chamfering in a single operation. These new drills are said to improve machining efficiency and offer versatility in operations like pre-thread drilling. Conventionally, this process requires either two separate tools — a drill and a chamfering tool — or a specially designed combination tool with integrated drilling and chamfering features. The new modular drills come with a TungFlex connection, which makes it possible to build an optimized, tailored drill assembly for a specific application using just standard items.

The new modular drills are designed to produce M8 to M18 ISO M standard pre-threads holes in diameters from 6.5 mm – 16.9 mm (from 0.256″ – 0.665″). For through-hole drilling, the drills are available with two different step sizes: 25 mm (0.984″) or 40 mm (1.575″), representing the distance from the drill corners to the chamfering edge.

The new modular body can hold all five styles of standard DrillMeister drilling heads, enabling greater flexibility for optimum performance across various materials and applications. The chamfering edges use Tungaloy’s standard AOMT06 double-edged inserts with chipbreaker for better chip control and cost-per-edge economy.