HRC70 Thread Mill
In high-hardness thread machining, tooling requirements are extremely demanding. Tools must maintain stable cutting performance when machining materials up to HRC70 while also delivering excellent
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In high-hardness thread machining, tooling requirements are extremely demanding. Tools must maintain stable cutting performance when machining materials up to HRC70 while also delivering excellent
SAMHO’s HRC70 series represents the pinnacle of ultra-hard thread milling technology. Designed to conquer materials traditionally considered “forbidden zones” for threading—including HRC68 high-speed steel, ultra-high hardness quenched steel, and specialized mold steels—this tool redefines application boundaries. Featuring a precision 2-tooth design and high-performance wear-resistant coatings, it effectively solves the common industry pains of tool chipping and difficult one-pass formation in extreme-hardness workpieces.
Balanced Load & Chip Evacuation: Unlike multi-flute structures, our 2-tooth geometry distributes the cutting load more reasonably in ultra-hard materials. This results in a “gentler” cutting process with significantly reduced vibration. The ample chip space prevents adhesion and scratching, ensuring superior surface quality and process stability.
Reducing Per-Hole Machining Costs: By utilizing a highly wear-resistant substrate combined with an optimized coating, this cutter maintains a stable cutting state even under extreme stress. It significantly reduces the risk of micro-chipping compared to ordinary thread mills, making it an ideal choice for mass production and high-value workpiece processing where minimizing the “total cost per hole” is critical.
100% Go/No-Go Gauge Compliance: The cutting edge profile is engineered for high consistency with standard metric thread contours. Each machined hole delivers high dimensional consistency and a complete internal profile, effectively avoiding rework and scrap in precision mold and assembly industries.
Risk Mitigation for High-Value Parts: Thread milling offers far greater safety than tapping. A single tool can cover multiple thread sizes through programming, eliminating the risk of tap breakage. Even in the event of tool malfunction, the workpiece remains undamaged—a vital feature for high-hardness, high-cost components.
High-End Die & Mold: Specifically developed for threading in hardened mold bases and inserts where high-end imported tools were previously the only option.
Precision Aerospace Components: Reliable threading in high-strength, heat-treated alloys that demand zero-defect production.
High-Speed Steel Tooling: Capable of machining threads directly into HRC68 high-speed steel components, expanding design possibilities for tool manufacturers.
| Feature | Specification | User Benefit |
| Material Hardness | Up to 70 HRC | Machining in previous “forbidden zones” |
| Tool Structure | 2-Tooth Design | Reduced vibration and better chip flow |
| Thread Standards | Metric (M) | Global compatibility for precision parts |
| Coating Type | High-Performance Wear-Resistant | Extended tool life in mass production |
| Accuracy Standard | 6H / Go-Gauge Pass | Zero rework and high assembly reliability |
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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