Z5 ⌀12.0mm L

Z5 ⌀12.0mm L is a five-flute solid carbide end mill from the Z5 series, supplied in the extended overall length. Its published geometry — ⌀12.0 mm cutting diameter on a 12mm shank, 22mm flute length within 125mm overall, with a 0.75mm corner radius — is published in full in the specification table above.

Everything stated about this tool on this page is either a published catalogue dimension or general machining reference that applies to the operation rather than to the tool.

Five cutting edges, 0.75mm corner radius, flute length 1.8× the cutting diameter, overall length 10.4× the cutting diameter.

Helix angle, rake and relief geometry, core diameter and edge preparation are awaiting manufacturer documentation and remain unpublished.

The manufacturer tabulates this geometry for slot milling and side milling across ISO P · M · K · S: non alloy steels, low alloy steels, high alloy steels, tool steels, stainless steels, ferritic/martensitic, annealed, austenitic, grey cast iron, nodular cast iron, malleable cast iron, heat resistant super alloys and titanium alloys.

Speeds, feeds and engagement differ by operation and by material, and the full recommendation for ⌀12.0 mm is published in Cutting data below. Pocketing, ramping, plunging and helical interpolation are not covered by the data sheet and no parameter is published for them.

ISO 513 sorts workpiece materials into six groups — P, M, K, N, S and H — by machining behaviour. This tool is tabulated for P · M · K · S: steels, stainless steels, cast irons and the heat-resistant and titanium alloys.

N (non-ferrous) and H (hardened) carry no row in the manufacturer’s data. That is an absence of guidance, not a statement of unsuitability, and neither is published as one.

ISO Material Classification →

Published: the ISO application range (P · M · K · S), the named workpiece materials, their hardness bands and a AlTiN coating — all from the manufacturer’s data sheet.

Still DATA_REQUIRED: substrate and carbide grade. The data sheet names the coating and says nothing about what is underneath it, and a grade is not inferred from a coating.

The manufacturer states a workpiece hardness band per material group, from 125 HB for annealed non-alloy steel up to 350 HB in low-alloy steel and the heat-resistant alloys. Each band is published beside the parameters it belongs to in Cutting data; two rows — annealed ferritic/martensitic stainless, and titanium alloys — carry no band at all.

These are Brinell figures for the workpiece, not a hardness claim for the tool. The general scale, the typical bands and the work-hardening trap are covered separately.

Hardness Guide (HRC) →

At five flutes, chip space is reduced and evacuation rather than edge strength is usually the limit. The manufacturer’s own data reflects that: side milling is tabulated at a light radial engagement with deep axial cuts, while slotting takes the full width at a reduced depth — down to 0.3× the diameter in heat-resistant alloys.

Both are published, with the engagement stated per material, in Cutting data.

Step-Over Guide →

The 12mm shank is a published dimension. Holder concentricity divides the work unevenly between five edges, so runout matters more at this flute count than at three.

Tool holding and runout →

The manufacturer’s data sheet makes no coolant recommendation — not flood, not through-spindle, not minimum-quantity lubrication, and not dry. The speeds and feeds published below are stated without one, and none is inferred from them here.

In general terms, coolant strategy is a property of the material and the operation rather than of the tool, and thermal cycling from an intermittent supply damages edges in its own right.

Material Guide →

Chatter, poor finish, burr formation, edge chipping, rapid wear and dimensional drift each map to a specific cause and a specific parameter change.

Machining Troubleshooting Guide →