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4-Flute Carbide End Mill VHM TiSiN Coated Roughing

Kortools

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€9.85

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Ø4x12x4Dx50L

Ø5x13x5Dx50L

Ø6x15x6Dx50L

Ø8x20x8Dx60L

Ø10x25x10Dx75L

Ø10x30x10Dx75L

Ø12x30x12Dx75L

Ø14x45x14Dx100L

Ø16x45x16Lx100L

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Ø6x24x6Dx75L

Ø8x25x8Dx75L

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Ø10x40x10Dx100L

Ø12x45x12Dx100L

Ø16x70x16Dx150L

Ø20x75x20Dx150L

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Product description

TiSiN-coated solid carbide roughing end mill, Z4

With chip breaker · for steel, stainless steel and cast iron · workpiece hardness up to 55 HRC

Solid carbide end mill with four flutes, a TiSiN coating and serrated cutting edges for rough machining. This rougher, also known as a ripper, removes stock when milling pockets, slots and contours, and in trochoidal milling operations.

Select the tool by comparing cutting diameter, cutting length, shank diameter and overall length. The range covers cutting diameters of Ø4–20 mm and overall lengths of 50–150 mm. The available dimension combinations are shown in the variant selector and on the corresponding dimension cards.

1. Roughing and chip breaking

The serrations along the cutting edges form a chip-breaking geometry. During milling, they help divide the chips into smaller pieces that are easier to evacuate from the cutting zone. This feature is useful when removing stock, particularly in pockets and slots.

2. Workpiece groups and milling operations

This end mill is intended for steel, stainless steel and cast iron. Select the cutting conditions for the specific grade and hardness of the workpiece. The up-to-55-HRC range refers to the workpiece, rather than to the hardness of the tool itself.

Operation	Intended use
Rough machining	Stock removal when preparing the shape of a component.
Pocket milling	Removing stock from a pocket along a programmed toolpath.
Contouring and side milling	Machining outlines, external profiles and component walls.
Slots and channels	Milling slots, including U-shaped channels, with a tool size suited to the geometry.
Trochoidal milling	Stock removal using a trochoidal toolpath prepared in the CNC program.
Helical interpolation	Milling holes along a helical path, with a suitable tool diameter and programmed path.

Different operations produce different levels of cutting-edge engagement. Cutting conditions suitable for side milling may not be suitable for full-width slotting.

3. Technical specification

Parameter	Specification
Tool substrate	VHM — solid carbide
Coating	TiSiN — titanium silicon nitride
Flute count	4 — Z4
Cutting edges	Serrated, with chip-breaking geometry
Shank	Cylindrical; diameter specified for the selected variant
Workpiece groups	Steel, stainless steel and cast iron
Workpiece hardness	Up to 55 HRC

4. Dimensions and size selection

Dimension	Range within the family	What to check
Cutting diameter	Ø4–20 mm	Suitability for the slot, pocket or contour to be machined.
Cutting length	12–75 mm	The length of the working part needed for the planned operation.
Shank diameter	Ø4–20 mm	Compatibility with the tool holder or clamping collet.
Overall length	50, 60, 75, 100 or 150 mm	Required reach, allowing for the length held inside the tool holder.

These ranges describe the tool family. Not every diameter and length combination is a separate size. The complete designations of selectable tools are listed in the variant selector.

Select the cutting diameter to suit the geometry being machined.
Check the cutting length required for the operation; it is separate from the overall tool length.
Verify the shank diameter before choosing the tool holder or collet.
Choose an overall length that provides the required reach with the shortest practical overhang.

5. Reading the size designation

Example: Ø4x12x4Dx50L. All dimensions in this designation are given in millimetres.

Part of the designation	Meaning	Value in the example
Ø4	Cutting diameter	4 mm
12	Cutting length of the working part	12 mm
4D	Shank diameter held by the tool holder	4 mm
50L	Overall tool length	50 mm

The sequence is cutting diameter × cutting length × shank diameter D × overall length L. The letter D after the third value refers to the shank, while L after the final value refers to the complete tool length.

Variant cards are illustrative diagrams, not to scale. Select the size using the numerical dimensions beside the dimension lines and in the card table. Do not measure diameter or length from the proportions of the illustration.

6. Clamping and cutting conditions

Before machining, inspect the cutting edges, correct seating of the shank and tool runout after clamping. Rigid workpiece and tool clamping remain part of process preparation when using an end mill with a chip breaker.

Keep overhang to the required minimum. The further the tool projects from the holder, the more significant the rigidity of the complete setup becomes.
Account for tool length when choosing cutting data. Select spindle speed, feed and depth of cut for the diameter, workpiece grade, operation and actual overhang.
Monitor chip evacuation. Choose coolant or air delivery to suit the workpiece and the capabilities of the machine.
Respond to unusual vibration or noise. Check clamping, cutting-edge condition and cutting conditions before continuing.

The tool is intended for CNC milling machines and machining centres with suitable clamping. It is not intended for use in a handheld drill or a drill press.

For cutting-data selection, identify the workpiece grade and hardness, full end-mill size, operation and planned overhang. There is no single spindle speed or feed setting suitable for every size and operation.

7. What the order includes

Item	Your selection
Sales unit	1 TiSiN-coated solid carbide roughing end mill, Z4
Tool size	The variant selected in the size selector, specified by four dimensions
Quantity	The number of pieces of the selected size entered for the order

Before adding the item to your basket, compare the full size designation with its dimension card. Selecting one diameter does not purchase a set of end mills or the other sizes displayed on the page.

8. Frequently asked questions

Is this end mill suitable for stainless steel?

Yes. Stainless steel, steel and cast iron are within its intended application range. Choose the cutting conditions for the specific workpiece grade, tool diameter and operation.

Does 55 HRC describe the hardness of the end mill?

No. In this description it refers to the workpiece hardness range. The tool itself is made of solid carbide and has a TiSiN coating.

Is overall length the same as cutting length?

No. Cutting length is the second dimension in the designation. Overall length is the final dimension, followed by L. Check both values before selecting a size.

Where can I check the exact dimensions?

Use the full size designation and the card displayed when you select a variant. Check all four dimensions; the image is an illustrative diagram rather than a drawing to scale.