What is a milling insert

A milling insert, also known as an indexable insert, is a replaceable cutting tool component used in milling machines and machining processes. It consists of a specially designed cutting edge made from hard materials such as carbide, cermet, or various cutting tool materials. Milling inserts are mounted onto the cutting tool holder, typically with screws or clamps, and they are used for various milling operations, including face milling, shoulder milling, slot milling, and more.

These inserts come in various shapes and sizes, each with specific geometries and coatings tailored for different machining applications and materials. The primary advantage of milling inserts is their replaceability. When the cutting edge becomes dull or worn, the insert can be easily replaced, reducing downtime and cost compared to regrinding or replacing an entire milling tool.

Milling inserts are versatile tools used in metalworking, woodworking, and other industries where precision cutting is required. The choice of the right milling insert depends on factors like the material being machined, the type of milling operation, cutting speeds, feeds, and the desired surface finish.