In high-hardness material thread machining, tooling requirements are significantly more demanding than in standard milling applications. Tools must maintain stable cutting performance in hardened steels,
In the field of thread milling for high-hardness materials, tool requirements are extremely demanding. Tools must maintain stable cutting performance in HRC65 hardened steel and
In high-hardness material machining, cutting tool performance requirements are extremely demanding. Tools must maintain stable cutting in hardened steel up to HRC65. At the same
In the mold and die industry, threading after heat treatment requires tools with extreme hardness and stability. The SAMHO HRC65 Three-Tooth Series is designed to
In the competitive world of mold and die manufacturing, reducing cycle time without sacrificing thread accuracy is critical. The SAMHO HRC65 Full-Tooth Metric Series is
In the manufacturing of high-pressure fittings and precision molds, threading after heat treatment is a critical challenge. The SAMHO HRC65 Full-Tooth NPT Series is designed
SAMHO’s HRC65 Full-Tooth Thread Mills are engineered specifically for the most demanding threading operations in ultra-hard materials. By combining a sub-micron grain carbide core with advanced variable helix geometry, these tools deliver micron-level accuracy for RC (PT/BSPT) tapered pipe threads. Designed for high-performance CNC machining, they excel in dry cutting or MQL environments, ensuring a flawless thread finish even in materials up to HRC 68.
Specialized Sub-Micron Carbide Substrate: Specifically designed for quenched steels, hardened die steels, and high-strength alloys. The ultra-fine grain carbide core provides the perfect balance of hardness and fracture toughness, resisting edge chipping under the intense mechanical loads of high-hardness milling.
Accurate Internal & External Threading: The full-profile cutting edge allows for complete thread formation in a single pass. This significantly reduces cycle times compared to single-point tools and ensures superior thread quality for both larger diameters and deep-hole applications.
Variable Helix Design for Chatter Suppression
Anti-Vibration Geometry: Featuring an unequal helix geometry, this tool dampens harmonic vibrations and chatter. This ensures a stable cutting process, resulting in improved surface finishes, better dimensional consistency, and a 20–30% extension in tool life—critical when machining hardened metals.
Extreme Heat and Wear Resistance: Our proprietary nano-coating increases thermal stability and surface hardness. This enables stable performance during high-speed dry cutting or in low-lubrication (MQL) environments, acting as a thermal shield for the tool’s cutting edge.
Hydraulic & Pneumatic Systems: Perfect for processing RC (PT) tapered pipe threads in high-pressure fittings and valve bodies.
Die & Mold Industry: Essential for threading hardened mold bases and inserts (HRC 50+) without the need for additional heat treatment.
Aerospace & Energy: Precision threading for high-strength fasteners and high-pressure containers where thread integrity is a safety-critical requirement.
| Feature | Specification | User Benefit |
| Material Hardness | 46 – 68 HRC | Direct milling of hardened steels |
| Thread Type | RC / PT / BSPT (Tapered) | Standardized pipe thread compatibility |
| Tolerance Control | Micron-Level ($\pm 0.005mm$) | High-repeatability in precision parts |
| Surface Finish | $Ra < 0.4\mu m$ | Reduces leakage risks in fluid systems |
| Machining Method | One-Pass Milling | 40% reduction in cycle time vs. single-point |
From HRC70 super-hard thread mills to diamond-coated graphite cutters, access our complete technical catalog with detailed dimensions and application charts.
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