Mikron Tool introduced CrazyDrill Non-Ferrous and CrazyDrill µm-SP in a September 8 announcement. The former targets copper, aluminium, lead-free brass and other non-ferrous materials; the latter addresses precision holes in lead-free brass, including watchmaking applications.
The deep-hole part of the announcement is the Non-Ferrous range. Its headline diameter range of 0.2–6.35 mm and maximum depth of 12×D describe the family, rather than a single combination available throughout the range.
Where the 12×D tools sit
The release and its German counterpart distinguish three configurations:
| Variant | Diameter | Drilling depth | Coolant supply | Regrinding |
|---|---|---|---|---|
| Non-Ferrous NK | 0.2–2.0 mm | 8×D or 12×D | Channels through the shank | Not suitable |
| Non-Ferrous NN | 0.2–2.0 mm | 8×D or 12×D | External | Not suitable |
| Non-Ferrous NN | 2.0–6.35 mm | 5×D | External | Suitable |
That split matters when considering a replacement tool. A drawing calling for a hole deeper than 5×D at a diameter above 2 mm cannot be matched merely by reading the largest diameter and deepest length in the headline range.
Two products with different jobs
CrazyDrill µm-SP is listed separately at 0.35–3 mm, with depths of 1–3×D on request and external coolant. Its precision positioning should not be transferred to the deeper Non-Ferrous variants.
Mikron attributes chip-control and cycle-time benefits to the new designs. The announcement does not establish a controlled comparison for a reader’s component. For process planning, the useful distinction is the published configuration: coolant access and regrinding eligibility change with the chosen variant.
Our editorial reading is to compare the exact diameter and usable depth first, then assess the proposed cycle against the component’s hole requirements. The tooling overview provides context for other deep-hole tool arrangements; the bore inspection worksheet helps define what a trial must measure.