The ninth and final part of the Turning Tool ISO code is the length of the cutting insert. The figure is measured in mm, so a 10 would mean the cutting insert has a 10mm cutting edge length.

As one of leading tungsten carbide inserts manufacturers, with a variety of inserts and insert configurations specifically designed for different metals including steels, stainless steel, cast iron and aluminum alloy, DOHRE offers the best cutting tool solution for almost any application or machining process.  Whether you're roughing, grooving, finishing, or other machining processes. You're sure to find your solution and tungsten carbide insert products you like in the wide selection we provide. Click below and get high quality turning inserts and milling inserts today!

If you know the identification code of your insert, we can provide a replacement for you. Even if you don’t have all the information to hand, we can use our expert knowledge gained from over 45 years in business to help you to narrow down your choice of tool.

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Finishing machiningAK form designed for ISO N  finishing machinninng ALH form designed for semi finishing to roughing for N ISO

Finishing machining: DMF/DTF chip breaker is suitable for ISO M  finishing machiningSemi-finishing machining DMM/DMA chip breaker is suitable for ISO M medium finishingRoughing machining DTR chip breaker is suitable for ISO P roughing machining

The sheer variety of carbide inserts available and their precision use means that there needed to be a simple system devised to categorise them. Carbide turning inserts, like all other metal cutting tools, are identified with a series of letters and numbers. These refer to the Turning Tool ISO code system that provides a (relatively) simple way to identify carbide inserts. In this article, we describe what the Turning Tool ISO code system is and how you can use it to identify your carbide inserts.

Tungsten carbide insert are mainly made of solid carbide and the carbide inserts are based multiple production processes. Cemented carbide has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, etc. Tungsten carbide is widely used as tool materials, such as turning tools, milling cutters, planers, drill bits, boring tools, etc. As the teeth of modern industry, cemented carbide tools play a fundamental role in promoting the development of the manufacturing industry. High value-added products such as precision carbide CNC tools are popular in the tungsten carbide tool market.

Every carbide insert has an identification code attached to it. This isn’t a random collection of letters and numbers, but a comprehensive system that can help you identify the correct tool.

By understanding the Turing Tool ISO system, you can quickly identify carbide inserts. Let’s look in a little more detail at each part of the coding system.

K series carbide inserts are made of an abrasion-resistant carbide designed for turning cast iron, these kind of carbide insert tool life is longer than inserts for other materials. With a positive rake, the K series inserts can stick out in front of the holder to reach tight spaces on the workpiece. Built for semi-interrupted cutting conditions, they're commonly used to machine imperfectly round workpieces, such as shafts with a keyway. Install inserts into a matching holder.Dohrecnc offers different kinds of carbide inserts for cast iron. DZT/GHB chip breaker is suitable for ISO K medium finishing and flat form(no chip breaker ) is suitable for ISO K roughing machining. Learn more information below and find the correct types for your needs.

Knowing the length of the holder is essential in selecting the right carbide insert. Each letter refers to a different length. While the differences may seem small, selecting the right part – or a suitable part if your chosen length isn’t available to use – is crucial.

DPF/DTF chip breaker is suitable for ISO P finishing machiningSemi-finishing machiningDPM/DPMK/TM chip breaker is suitable for ISO P medium finishingRoughing machining DPR/DTR chip breaker is suitable for ISO P roughing machining

Carbide inserts can be used at high speeds, which enables faster machining, which results in better finishes. It’s crucial that you select the correct carbide insert for the material that you are cutting or you could risk damaging the insert, the machine and the workpiece.

Every carbide insert can be identified using the Turning Tool ISO code system. This straightforward shorthand system covers everything you need to know, and need to tell us, when ordering your new carbide insert.

R.D. Barrett was established in 1975 by Ron Derek Barrett, an ex employee of both DS & G Lathes and Ford Motor Company. We hold one of the UK largest stock of engineering tooling.

The ISO code is based on the metric system, with measurements made in millimetres. In America, they use a different system called the American National Standard ANSI B212.4-2002 system that uses inches. We don’t cover that in this guide.

Similar to the width above, the seventh number refers to the complete width of the shank. Again, if the figure is 20, the shank width would be 20mm.

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This code is used to describe the style of turning tool. There are 14 different holder styles, with each differentiated by the approach angle of the tool.

► Machine adopted ： Swiss HUASER coordinate grinder;  Swiss Ostwald press machine ; Swiss GF Low Speed Wire Cutting; Germany SEISS inspection machine; Automatic water spray passivation;

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Carbide inserts are used to accurately machine metals, including steels, carbon, cast iron, high-temperature alloys and other non-ferrous metals. Carbide inserts are replaceable and indexable and come in a huge variety of styles, sizes and grades.

There are five different types of clamping methods used for tuning tools. The various methods describe how the carbide insert is clamped, the tool’s shape and the force and rigidity of clamping.

At R.D. Barrett, we hold the UK’s largest selection of professional turning tools, including carbide inserts. We have a huge range of carbide inserts suitable for all applications in various sizes, shapes and grades.

The fourth letter defines the clearance angle of the insert. There are seven different clearance angles of between 0 degrees and 25 degrees.

The sixth code refers to the height of the shank. If the sixth number is 20, for example, that would mean the shank is 20mm high.

The system provides a universal framework for identifying the carbide insert that you are using, or need to purchase. If you know the identification code, selecting a replacement part is simple and straightforward.

There are ten different insert shapes, but it’s quite a loose classification. There are variations within the classification system which means they should be taken as an identifier.