CNMAインサート

CNMA insert angle:0° Negative rake insert and no chipbreaker;

80° rhombic turning insert;

Primary workpiece material: Hard material; cast Iron; steel；

Primary workpiece material code: P; H; K

Insert holding method: Pin; Clamp;

Breaker application: Roughing, semi-finishing, finishing；

Matching cnma insert tool holder: PCBNR/L, PCLNR/L, MCLNR/L,MCBNR/L；

Grade: Both PVD and CVD；

Material : Tungsten Carbide；

CNMA insert tool holder

CNMA Carbide Inserts: The Essentials
- Shape: Rhombic (diamond) with an 80-degree included angle.
- Clearance Angle: 0 degrees
- Cutting Edges: Double-sided, offering two cutting edges per insert for cost-effectiveness.
- Chipbreaker Geometries: Diverse range of chipbreaker styles from various manufacturers are available. These are tailored to specific materials and machining operations (roughing, finishing, etc.).
- Key Uses: Primarily used for general turning operations and some facing work on a range of materials.
Common Materials CNMA Inserts are Used For
- Cast Iron: Suitable for many cast iron applications.
Advantages of CNMA Inserts
- Cost-effective: Due to their double-sided design, offering longer tool life per insert.
- Versatile: The range of grades and chipbreakers make them suitable for many machining applications.
- Strong Geometric Shape: The 80-degree diamond shape provides strength and rigidity for their size.
Important Considerations
- Match the Grade to Your Material: Choosing the right insert coating and substrate composition is crucial for optimal tool life and performance in the specific material you’re cutting.
- Select the Right Chipbreaker: The chipbreaker geometry significantly influences how chips are formed and broken. It should be chosen based on the material and type of machining operation.

- 12: Inscribed Circle (IC) of 12.7mm (approx. 0.5 inches)
- 04: Thickness of 4.76mm (approx. 0.187 inches)
- 08: Corner radius of 0.8mm (approx. 0.031 inches)

Key Dimensions

Inscribed Circle (IC): The diameter of the largest circle that fits within the insert. Common IC sizes include:
- 12.7mm (0.5″)
- 16mm (0.63″)
- 19.05mm (0.75″)
厚さ: Impacts insert strength and the number of usable cutting edges. Common thicknesses include:
- 3.18mm(0.125″)
- 4.76mm (0.187″)
- 6.35mm (0.25″)
Corner Radius: Affects surface finish and strength at the cutting edge. Common sizes include:
- 0.4mm (0.016″)
- 0.8mm (0.031″)
- 1.2mm (0.047″)