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All sizes in this series (16)
Order code: WDN2004ATH ToolsOn order

Square Carbide End Mill WDN (standard length)D1 Ø20 mm × D2 Ø20 mm × L1 38 mm × L 100 mm

D1 — Cutting diameter
Ø20mm
D2 — Shank diameter
Ø20mm
L1 — Flute length
38mm
L — Overall length
100mm
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Starting cutting values for WDN2004

Calculated for a Ø20 mm cutting diameter and 4 flutes. Radial engagement is taken as ae = 0.5×D and axial depth of cut as ap = 1×D. Values assume a carbide tool and medium duty conditions; machine rigidity and workholding change the result. These are calculated reference values. They change considerably with the machine, tool holder, clamping and the result you need; applying them remains the responsibility of the user.

Workpiece materialVc (m/min)n (rpm)fz (mm/tooth)vf (mm/min)Suggested coating
Alaşımlı çelik (42CrMo4)1151,8300.115842TiAlN, AlTiN
Ostenitik paslanmaz (304/316)851,3530.092498AlCrN, AlTiN
Alüminyum, dövme (6061/7075)5508,7540.2177,616Kaplamasız cilalı, DLC
Sertleştirilmiş çelik 45–55 HRC851,3530.056303nACo/AlTiSiN, AlCrN
Calculator for other materials and depths of cut →

About this size

  • Square end mill; used for side milling, slotting and square shoulders. The cutting corner is sharp, so stress concentrates there and edge chipping usually starts at the corner.
  • At 20 mm spindle power and torque start to be the limit. Required power should be calculated before programming, otherwise the machine reduces feed on its own and chip thickness drops below target.
  • Length of cut to diameter ratio 1.9; the most rigid configuration in this series. Axial engagement can be increased comfortably.

These notes are derived from the geometry and ratios of this size and are general in nature. Machine, holder, clamping and coolant conditions change the outcome considerably.

Nearby sizes in this series

Related Technical Guides

For choosing the right tool and working with the right parameters

All guides →
Cutting Parameter CalculatorOnce material, diameter and flute count are entered, speed (n), feed (vf) and the chip thinning correction are calculated.