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Inserts are used for different application like Boring, Turning, Curve, Grooving, Milling Etc. Every insert codes has its meaning  in itself , Now we will go step by step and understand the decoding.

Carbide Inserts are replaceable bit that is used in a Cutter for working on different alloys such as Cast Iron, Aluminium, Steel  in CNC Machines / Lathe Machines/ Milling Machines (Computerised Numerical Controlling Machine).  The main advantage of Carbide Insert is it works faster and that result in more finishing of the Components.

But people often get confused while choosing the correct carbide insert as it comes in different size, style, grade, geometry, angel, specification,  and these grade, specification , size are encoded in its Product Code kind of Random collection of Letters and Numbers.

The inscribed circle (IC) is not something you can readily measure on a triangular insert. But the height (H) is easy to measure (a flat against one jaw of your caliper and a point against the other). The diameter of the inscribed circle is 2/3 of that measurement. So if you measure the height of an insert to be 0.374 (the radius on the point makes it a little less than the true height), the calculated inscribed circle is 0.249, or 1/4".

These tables show the ANSI and ISO insert designations for indexable inserts for turning. A given insert can be specified in either ANSI (American) or ISO (metric) designations. Because many inserts are made in other countries, the ISO system is used frequently. Don't get hung up with spaces and hyphenation in insert designations. They are sometimes included for clarity, but there is little consistency among vendors.

What is Turning, Milling , Grooving, Threading insert Grade, Angel, Specification, Dimension, Full form, Geometry, chart.

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You must have heard of carbide insert comes with a unique code TNMG160408 CNMG120408 CCMT09t304 VBMT160404 , you must be thinking what are these codes to do with insert specification.

So, How was the Decoding, didn't you find it simple, even if you have any doubts , Please reach out to us at Hello@jaibros.com. Our Technical Team will assist you to make the selection easily.

The first digit (fifth character) of the ANSI designation is the size, described by the inscribed circle. This illustration shows what that means.

See also: Indexable inserts available at LittleMachineShop.com ANSI Turning Tool Designations ANSI Boring Bar Designations