DNGA CBN Inserts PCBN Turning Inserts for Hardened Steel & Cast Iron CNC Machining

Short Description:

DNGA CBN Inserts are premium indexable cutting tools made of high‑grade Cubic Boron Nitride (CBN/PCBN), designed for high‑precision CNC turning of ferrous metals above 45 HRC, such as hardened steel, tool steel and cast iron. With 80° diamond shape for excellent chip control, they deliver stable performance, superior surface finish and extended tool life in finishing to semi‑roughing applications.

Model: DNGA Series
Material: CBN / PCBN
Shape: 80° Diamond (D‑type)
Application: Hard Turning, Finishing, Semi‑roughing
Hardness: >45 HRC
Suitable Materials: Hardened Steel, Tool Steel, Cast Iron
Edge Types: Single / Double / Four Edges
Cooling: Dry cutting / MQL preferred

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Product Detail

Product Tags

Key Advantages

Superior Material
High‑performance CBN/PCBN with extreme hardness, heat resistance and wear resistance, outperforming carbide inserts in hard turning.

Multiple Edge Options
Single‑edge: For ultra‑precision machining with tight tolerances.
Double‑edge: For mass production, lower cost per part.
Four‑edge: Max edge utilization, less wear, eco‑friendly and cost‑effective.

Outstanding Performance
Stable edge ensures high dimensional accuracy.
Mirror‑like surface finish reduces post‑processing.
Compatible with high‑speed CNC machining.

Strict Quality Control
Each cutting edge inspected under 100× magnification to avoid chipping.
Standard edge rounding 0.15 mm, customizable for different materials.

1.D-shaped single-edged tool tips are ideal for high-precision machining applications. With coatable CBN edges, these tools offer extended lifespan and enhanced durability—perfect for industries demanding tight tolerances and reliable performance in precision component production.；

2.D-type CBN inserts with double-edged tips are engineered for high-volume production. Featuring coatable cutting edges, these tools deliver extended tool life, reduced wear, and lower operational costs—ideal for mass manufacturing environments prioritizing efficiency and durability.

3.Four-edged tool tips are ideal for high-volume production, leveraging multiple cutting edges to drastically reduce tool wear and minimize environmental impact—making them a sustainable choice for eco-conscious manufacturing.

Notes: Edge rounding W=0.15mm; customizable for different workpiece materials.

Application Scenarios

Automotive：Engine parts, crankshafts, brake discs, transmission components.
General Machinery：Bearings, rollers, pumps, high‑precision components.
Aerospace：Turbine shafts, landing gear alloys, precision parts.
Mold & Die：Intricate cavities, high‑wear surfaces in hardened steel molds.