Graphite Corner Radius End Mill【4 Flutes Φ 3-12】

Enhance Your Manufacturing Process with Graphite Corner Radius End Mill【4 Flutes Φ 3-12】

SAMHO is your trusted partner in procurement solutions. We are excited to offer you the opportunity to enhance your manufacturing process with the Graphite Corner Radius End Mill【4 Flutes Φ 3-12】.

4-Flute Corner Radius Diamond Coated End Mill — Optimized for High-Precision Machining of Graphite and Ceramics

Engineered specifically for high-hardness, brittle non-metallic materials such as graphite and technical ceramics, this 4-flute corner radius end mill features a high-adhesion diamond coating that delivers outstanding wear resistance and thermal stability. Designed for high-efficiency applications in CNC machining centers, this tool excels in both dry cutting and MQL environments. Verified tool life exceeds 18 hours in continuous cutting scenarios.

Premium Diamond Coating for Extended Tool Life
Utilizes a high-adhesion diamond coating that offers extreme surface hardness and chemical stability. Effectively resists abrasion from graphite dust and impact damage when machining ceramics, delivering long-lasting performance under harsh conditions.

Corner Radius Geometry for Superior Edge Strength & Finish Quality
Rounded cutting edges minimize stress concentration and enhance edge strength, helping to prevent micro-chipping and cracks—ideal for precision contouring, cavity finishing, and fine-detail machining of brittle materials.

4-Flute Design for Rigidity and High-Efficiency Cutting
The multi-flute layout increases tool stiffness and reduces vibration, enabling higher feed rates and improved surface finish. Perfect for side milling, face milling, and finishing operations on graphite electrodes and ceramic components.

Ultrafine Carbide Substrate for Toughness and Crack Resistance
Made from ultrafine-grain solid carbide, the tool offers a balanced combination of hardness and toughness. It resists thermal cracking and edge failure during prolonged exposure to abrasive materials.

Precision Ground to ±0.01mm Tolerance on 5-Axis CNC
Manufactured with advanced 5-axis CNC grinding technology to ensure tight dimensional control and consistency. Ideal for applications requiring high geometric accuracy and repeatability, including graphite molds, ceramic inserts, and structural parts.

GRASR4-000【4 Flutes Φ 3-12】
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    Highly Recommend for Machining

Graphite end mill processing recommendation
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    Specialty

Specialty
End Mills

4 Flutes Corner Radius End Mill Catalog

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Total 42 Models-Unit(Mm)
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    SHGLSR 4 Milling Conditions

GRASR 4-000 Milling Conditions
For OEM Customization, Please Contact Us
Whatsapp: 8613316909493, Email: zane@samhotool.com

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FAQ: Optimizing Graphite Machining with 4-Flute Corner Radius End Mills

Q1: What are the primary machining applications for 4 flute graphite corner radius end mills?

A: These tools are engineered for high-precision graphite electrode manufacturing, mold profiling, and finishing 3D curved surfaces. They perform exceptionally well on medium-to-high density graphite. Choose a 4 flute end mill when your project demands strict surface finishes and high tool rigidity.

Q2: What advantages do 4 flute end mills offer over 2 flute versions in graphite machining?

A: The 4-flute design boosts material removal rates (MRR) during roughing and semi-finishing. By adding a corner radius, you redistribute cutting forces away from the fragile tip, which prevents premature tool failure. In high-speed dry machining, 4 flutes provide a more stable cutting path. This stability makes them ideal for flat faces, shallow cavities, and high-feed toolpaths.

Q3: Why is a corner radius recommended for graphite instead of a sharp square corner?

A: Graphite is highly abrasive and causes rapid tool wear. Sharp square corners chip easily under these conditions. A corner radius strengthens the tool tip, minimizes micro-chipping, and improves the surface finish of the workpiece. For mold and die applications, this radius eliminates secondary benchwork (polishing) and ensures better dimensional consistency.

Q4: Can I use a 4-flute graphite end mill to finish complex 3D surfaces?

A: Yes, but you must control your cutting parameters. The 4-flute configuration offers excellent stability during 3D profiling. However, because 4-flute graphite endmills have smaller chip gulleys (flute space), they require optimized toolpaths like Z-level contouring or helical interpolation. For deep cavities or tight corners where dust packing is an issue, we recommend switching to a 2 flute tool.

Q5: How does a corner radius impact tool life during high-speed graphite milling?

A: Field data shows that corner radius tools outlast square end mills by up to 40% in high-speed dry milling (typically 20,000 to 60,000 RPM). To maximize this wear resistance, always pair the corner radius geometry with a premium Nano diamond coating over a micro-grain carbide substrate. This combination effectively repels abrasive graphite dust.

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