In graphite and hard, brittle material machining, cutting tools must meet extremely high standards. They need to deliver micron-level precision while maintaining excellent wear resistance and stability. The SAMHO 4-flute long-neck corner radius end Mmill with Diamond Coating (D1R0.05–3R0.5 mm) is engineered to meet these demands. It is specifically designed for complex deep cavities and high-precision contour machining.
The long-neck design improves tool clearance and reduces interference. It performs especially well in deep slots, narrow cavities, and hard-to-reach areas. The corner radius strengthens the cutting edge by reducing stress concentration at the tip. This helps prevent chipping and significantly extends tool life.
Advanced Technical Features
In the precision machining of graphite and hard, brittle materials, cutting tools must deliver both high wear resistance and stable, high-accuracy performance under demanding conditions. The SAMHO 4-flute long-neck bull nose end mill with Diamond Coating is engineered based on extensive CNC machining experience. It is designed for deep-cavity machining and high-precision contouring in abrasive materials.
High-Adhesion Diamond Coating for Extended Tool Life
This tool uses a proprietary diamond coating that provides exceptional hardness and chemical stability.
- Excellent wear resistance: Maintains a sharp cutting edge during long periods of dry machining on graphite
- Strong anti-chipping performance: The coating bonds firmly to the carbide substrate, even under high-speed and high-friction conditions
- Stable machining behavior: Performs reliably in continuous machining of highly abrasive materials such as graphite and ceramics
Long-Neck Corner Radius Design for Complex Machining
The geometry is optimized to balance tool reach and structural strength.
- Long-neck design: Improves clearance and reduces interference in deep slots, narrow cavities, and complex mold features
- Corner radius edge: Reduces stress concentration at the cutting edge, helping prevent chipping and extending tool life
- Improved contouring performance: Ensures smooth and stable cutting in curved profiles and transition areas
4-Flute Design for Efficiency and Surface Quality
The 4-flute structure is optimized for finishing performance and machining stability.
- High-quality surface finish: Ideal for graphite electrodes and precision component finishing
- Reduced vibration: Multiple cutting edges improve balance and cutting stability
- Efficient chip evacuation: Maintains reliable chip removal in graphite dust-heavy environments
Ultra-Fine Grain Carbide for Strength and Accuracy
The tool is manufactured from high-strength ultra-fine grain carbide using precision grinding technology.
- Tight dimensional control: Tolerance is maintained within ±0.01 mm for consistent batch production
- Improved fracture resistance: Enhances tool durability in high-load and abrasive machining conditions
- Consistent machining performance: Ensures stable results over long production runs
This tool is specifically developed for graphite electrodes, ceramic components, and other abrasive materials. It provides a reliable balance of machining efficiency, surface quality, and tool life for demanding CNC applications.
Typical Applications
The SAMHO diamond-coated 4-flute long neck round corner end mill is engineered for high-precision machining of complex geometries and highly abrasive materials. It is designed for stable performance in demanding CNC applications.
Precision Machining of Graphite Electrodes:
Suitable for high-accuracy contouring, fine structural features, and complex curved surfaces in graphite electrode production.
Deep Cavity and Mold Machining:
Delivers stable cutting performance in deep slots, narrow cavities, and multi-level mold structures.
Ceramics and Hard, Brittle Materials Machining:
Improves resistance to edge chipping while maintaining consistent surface quality in abrasive materials.
High-Precision 3D Profiling:
Ideal for complex surface contouring, smooth radius transitions, and precision shaping of intricate components.
Why Source Wholesale from SAMHO?
Engineered for Difficult-to-Machine Materials
Designed for graphite, ceramics, and other hard, brittle materials. Provides stable performance in highly abrasive machining environments.
Excellent Deep-Cavity Machining Capability
The long-neck design improves tool reach and clearance. It is well-suited for deep slots, narrow cavities, and complex mold features.
High Wear Resistance with Diamond Coating
The diamond coating significantly improves abrasion resistance. It supports long-duration dry machining of graphite with consistent tool life.
Reliable Batch-to-Batch Consistency
Tight dimensional control and precision grinding ensure stable performance across production batches, supporting consistent machining results in mass production.
