This Sandvik Coromant Top-Lok grooving insert is carbide GC1125 grade and has one cutting edge, a right-hand neutral cutting angle, and a positive-rake TLGP chipbreaker for internal and external grooving operations on all materials at low feeds. GC1125 grade is carbide with a coating of titanium aluminum nitride (TiAlN) and chromium oxide (Cr2O3) applied through physical vapor deposition (PVD) that provides a balance of hardness and toughness for resistance to shock and wear in average machining conditions. A PVD coating maintains a sharper cutting edge than a chemical vapor deposition (CVD) coating.
This right-hand, single-edged insert has a TLGP chipbreaker, which has a positive rake for evacuating chips during internal and external grooving operations at low feed rates. It is used with Sandvik Coromant Top-Lok toolholders, which lock the insert against both the back and side of the insert pocket for secure clamping. Tolerance of the cutting width of the insert is + or - 0.001".
Grooving inserts are coded according to their specific cutting and application capability (e.g., N123M1-0900-0008-GM). Each section of the code represents details of the insert: hand, compatible toolholder series, seat size, number of edges, insert width, lead angle, corner radius, and chipbreaker. Generally, as the insert size becomes larger, the maximum cutting depth increases. Cutting depth influences the material removal rate, the number of cuts, and chip evacuation efficiency when using the insert. Indexable inserts are small cutting tools designed to remove material in external and internal cutting applications such as turning, milling, drilling, parting, and grooving. They are held by an insert holder and usually have multiple cutting edges that can be rotated when one edge wears down. Multiple inserts can accomplish a variety of cuts in one operation.
Sandvik Coromant produces tools for turning, milling, and drilling. Headquartered in Sweden, the company manufactures tools used throughout the metalworking field, including the automotive and aerospace, die and mold, and general engineering industries.
Matching Inserts to Holders
These inserts are used with the Sandvik Coromant Top-Lok, an indexable holding system for grooving and parting. The Top-Lok design of the toolholder provides secure clamping.