What is a Ccmt insert?

Description. CCMT-21.51 carbide insert is a 80° diamond with a 7° relief. The center hole is a 40°-60° single countersink, and a single-sided chipbreaker. It has an inscribed circle (IC) of 0.25″ (1/4″), a thickness of 0.094″ (3/32″), and a corner (nose) radius of 0.0156″ (1/64″).

How do I know what size carbide insert to use?

A two-digit number designates the sizes of these inserts. The first digit indicates the number of eighths of an inch in the width and the second digit indicates the number of fourths of an inch in the length of the insert.

How do I know if I have carbide inserts?

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. The ISO code is based on the metric system, with measurements made in millimetres.

What is TNMG?

Acronym. Definition. TNMG. The New Message from God.

How do I choose my insert grade?

How to choose correct turning insert

Select insert geometry based on selected operation, for example finishing.
Select the largest possible nose angle on the insert for strength and economy.
Select the insert size depending on the depth of cut
Select the largest possible nose radius for insert strength.

What makes a carbide insert indexable?

Indexable tools do have some drawbacks. Inserts are usually made by pressing carbide powder and binding materials into a die under high pressure. After forming, the inserts are heated to high temperatures and sintered, binding the powder and other materials together and giving the insert its strength.