In todayʼs modern manufacturing landscape, exceptional precision and efficiency are at the very core of every production process. MEGA Tech is proud to present ISCAR , a leader in the cutting tools industry, consistently pushes the boundaries of innovation, particularly with its Polycrystalline Diamond (PCD) and Cubic Boron Nitride (CBN) tools. These advanced materials are transforming how industries approach machining, offering significant advantages in cutting performance and tool longevity.
Polycrystalline Diamond (PCD) tools are renowned for exceptional hardness and wear resistance, excelling in non-ferrous metals, composites, and abrasive materials. ISCARʼs PCD solutions are engineered for high accuracy and premium surface finishes, crucial to aerospace, automotive, and electronics applications where tight tolerances and consistent quality are mandatory.
The benefits of ISCAR’s PCD tools are:
- Extended Tool Life: PCDʼs exceptional hardness means that tools maintain their cutting edge for longer periods, reducing the frequency of tool changes and downtime.
- Enhanced Surface Finish: The fine-grain structure of PCD allows for superior surface finishes, essential for high-performance components where precision is critical.
- Increased Cutting Speeds: With PCD tools, manufacturers can operate at higher cutting speeds, leading to improved productivity and reduced cycle times.
ISCARʼs innovations in PCD tooling include specialized geometries that improve chip control and heat dissipation, optimizing performance and stability in challenging, high-speed machining environments.

ISCARʼs Cubic Boron Nitride (CBN) tools are another cornerstone of ISCARʼs cutting-edge solutions, specifically designed for machining hardened steels, cast iron, and superalloys. CBN ranks second only to diamonds in hardness, making it an ideal material for hard turning and finishing operations in sectors such as automotive and aerospace.
A key advantage of CBN inserts is the ability to replace many slow and expensive grinding operations of hardened parts. Turning with CBN inserts lowers cost per component and enables higher metal removal rates, dry machining, faster setup, and shorter cycle times. While the tightest size tolerances and finest finishes can still favor grinding, CBN hard turning often achieves required accuracy and enables inner and outer diameter machining on one machine.
Compared to PCD, CBN is chemically passive in ferrous materials, contributing to thermal stability and reduced tool degradation.
The key advantages of CBN tools are:

- Superior Hardness and Strength: CBN tools withstand high temperatures and maintain sharpness even when cutting hard materials, which is essential for industries like automotive and aerospace where hard turning is common.
- Improved Productivity: The durability of CBN tools allows for higher cutting speeds and feeds, translating to faster machining processes and increased throughput.
- Reduced Tool Wear: With exceptional resistance to thermal and chemical wear, CBN tools last longer than conventional carbide tools, leading to cost savings in the long run.
ISCAR’s commitment to innovation is evident in its development of multi-tipped CBN inserts with enhanced edge preparation, ensuring optimal performance in the toughest machining environments.
ISCAR’s insert types are designated as:

- MT Type – Mini-Tipped Turning Inserts, Multi-Cornered /One-Use Inserts: Smaller, economical CBN tips mounted on each usable corner maximize cutting edges per insert. Single-sided versions use top corners; double-sided use top and bottom. Available in various shapes, square and diamond-shaped inserts, known as “Quadro,” offer 4 corners, whereas triangular inserts, referred to as “Triple,” provide 3 corners.
- MM, MF, MR Chipbreakers Type CBN Inserts: Application-tuned chipbreakers provide consistent chip control in hard machining, preventing long chips and workpiece damage. MF suits fine- to-medium cutting, MM targets medium cuts, and MR focuses on roughing, ensuring stable, predictable production.
- L Full Edge Tipped Inserts: Triangular and square formats with full-edge CBN tipping (right- or left-hand options for square) enhance stability and productivity, supporting continuous, reliable turning.
- HS Type Half Solid CBN Inserts: Inserts with a top layer of CBN with a carbide base offers multiple cutting edges, excellent wear resistance, impact resistance, thermal stability, and chemical stability. They enable turning instead of grinding, deliver excellent surface quality, save 30‒50% versus carbide, and achieve 5‒10× higher efficiency than carbide and ceramic inserts
- Solid CBN inserts are versatile across diverse industries such as automotive parts, roll, gear, bearing, and air conditioning compressors. They excel on cast iron and hardened steel parts such as engine components, brake discs, brake drums, pulleys, cylinder blocks, cylinder liners, pumps, and cast-iron rolls.
- S Type Full Solid CBN Inserts are built for aggressive, high-speed machining and roughing. They deliver excellent wear and impact resistance, thermal stability, and corrosion resistance, enabling turning instead of grinding with strong cost performance-saving 30‒50% versus carbide—and 5‒10× efficiency gains versus carbide and ceramic inserts. S Type Full Solid CBN Inserts are suitable for machining cast iron components in the automotive industry and other industrial hardened steel applications.
In conclusion, ISCAR’s PCD and CBN cutting tools are at the forefront of machining technology, offering solutions that meet the highest standards of precision, efficiency, and durability. As industries continue to demand more from their machining processes, ISCAR’s dedication to research and development ensures that their tools remain at the cutting edge, driving productivity and performance across the globe.
Article by: MEGATech & ISCAR (Thailand) Ltd.<< Click here