Thread Turning Tool with many Advantages

FourCut has the following advantages compared to the conventional triangular insert.
  • Cost-effective
  • Strength
  • Accessibility
  • Optimal Clearance

Read below why you should use FourCut as the first choice for external thread turning. See also the video about FourCut.

FourCut - Thread Turning from SmiCut

Click here if you have trouble watching the video

Cost-effective

FourCut threading insert with four numbered cutting edges.Four Cutting Edges – for the price of Three

As the price for the inserts are the same, the FourCut threading insert is 25% cheaper as it has four cutting edges instead of three.

Strength

Cutting-force directions on a vertically mounted FourCut thread turning insert.Strong and Stable Machining

FourCut is a vertical insert. This gives a very strong insert. The cutting forces go in to the insert and you don ́t need any anvil as the carbide insert take up the forces.

No problem with the side forces as the at surface of the insert take up these forces. No weak point on the toolholder.

Accessibility

FourCut inserts machining external threads close to shoulders and a tailstock centre.Minimum Waste of Material

With a vertical insert the accessibility gives you two main advantages.

  • Less waste of material as you don´t need to turn away material to be able to make the thread.
  • As you have more space you can use a live center when you are turning small diameters. This will give you a stable machining and a better quality of thread.

SmiCut has also developed a FourCut toolholder with extra accessibility. Read more about it here.

Optimal Clearance

FourCut threading insert with a 7° clearance angle around the thread profile.Perfect Cutting Conditions

The inserts are ground on all sides with a complex grinding technology on 6-axis grinding machines to get a 7° clearance angle all around the thread profile which gives the following advantages:

  • Extra clearance on the flanks gives better cutting conditions.
  • Same toolholder for different helix angles as the extra clearance allow you to have bigger difference in helix angle.
  • Less clearance on the radius gives stronger cutting edge and longer tool life.

Use same toolholder for Grooving

FourCut insert cutting a groove beside a shoulder.FourCut is also available for Grooving. Same holder is used for threading and grooving. The grooving inserts are available for widths up to 3,5 mm.

Improve Productivity: Choose from Two FourCut Insert Grades

All FourCut inserts are available in two grades: LC and HC. We recommend LC as the first choice for many different materials such as steel, cast iron and aluminium. HC is best for harder materials such as hardened steel and stainless steel.

Consult our catalogue or visit the FourCut grades page to help you select the most suitable grade.FourCut insert grades: HC with AlTiSiN coating and LC with AlCrN coating.

Documents

SmiCut Main Catalogue

Links

Choose the Right Carbide Grade for FourCut Inserts
FourCut - Toolholders with Extra Accessibility
FourCut CAD Drawings
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