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CNMA Series Turning Insert

Attribute Specification / Description
Shape Code (C) 80° Rhombic (Diamond): Balances cutting versatility with high tip strength.
Clearance Angle (N) 0° Negative: Provides superior support and resistance to edge breakage.
Tolerance Class (M) M-Class: Ensures high repetitive clamping precision for mass production.
Hole/Fixing (A) Cylindrical Hole: Designed for top-clamp or pin-lock tool holders for maximum stability.
Application Range Roughing to semi-finishing; specifically for interrupted or heavy-load cuts.
Workpiece Materials Cast Iron (K), Hardened Steel (H), Alloy Steel (P), and Superalloys (S).
Popular Sizes 1204,1606, 1906

 

Key Words:

Turning insert, Lathe insert,CNC turning insert, External turning insert, Internal turning insert, Threading insert

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Description

Product Information:

The CNMA is a high-performance, double-sided 80° rhombic (diamond-shaped) negative turning insert. Known for its exceptional edge strength and structural stability, this series is specifically engineered for medium to heavy-duty machining applications.

Unlike the common CNMG series, the CNMA typically features a flat-top (plain) design without a chipbreaker. This makes it the ideal choice for machining cast iron, hardened steels, and performing interrupted cuts where maximum resistance to chipping is required. Its double-sided configuration provides up to 4 effective cutting edges, offering excellent cost-efficiency for high-volume production.

 

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