Kyocera GBA Shallow Grooving Inserts
The Kyocera GBA external and internal shallow grooving insert series is engineered to deliver superior chip control, smooth surface roughness, and extended tool life across steel, stainless steel, and cast iron turning applications. Developed by Kyocera, this specialized grooving lineup incorporates the next-generation PR20 insert grade series with MEGACOAT NANO EX PVD coating technology to eliminate chipping and optimize machining stability.
Proprietary PR20 Grade Series & MEGACOAT NANO EX Technology
The Kyocera GBA insert family introduces advanced material grades specifically designed to withstand the thermal and mechanical stresses of continuous and interrupted grooving:
- MEGACOAT NANO EX Coating: Multi-layer nano-coating structure rich in aluminum provides exceptional high-temperature hardness, oxidation resistance, and crater wear protection.
- PR2015 Grade: First recommendation for steel and cast iron, offering an optimal balance of hardness, toughness, and superior wear resistance for continuous cuts.
- PR2025 Grade: Stability-oriented grade for steel and first recommendation for stainless steel, featuring maximum fracture resistance during heavy interrupted grooving.
- GM Chipbreaker: Molded chipbreaker geometry provides smooth chip curl and evacuation, preventing surface clouding and groove wall scratches.
Machining Performance & Material Applications
Internal evaluations demonstrate that Kyocera GBA inserts maintain a flat, mirror-like groove bottom finish and significantly outperform competitor tools in side flank wear and impact resistance (withstanding over 60,000 impacts in interrupted SCM440 steel testing).
Technical Specifications
| Grade Name | ISO Range | Coating Technology | Primary Workpiece Materials | Key Advantage |
|---|---|---|---|---|
| PR2015 | P10 – P20 / K10 – K20 | MEGACOAT NANO EX PVD | Steel & Cast Iron | 1st Recommendation for Continuous & High-Speed Wear Resistance |
| PR2025 | P20 – P30 / M20 – M30 | MEGACOAT NANO EX PVD | Stainless Steel & Interrupted Steel | 1st Recommendation for Stainless Steel & High Fracture Resistance |
Conclusion
Implementing Kyocera GBA shallow grooving inserts in your turning processes ensures flawless surface finish quality, reduced insert changes, and reliable chip control. For authentic Kyocera cutting tools and expert technical guidance, please Contact – LORIOT INDUSTRIAL.

