Graphite Ball Nose End Mill【2 Flutes R0.5-R6】

High-Quality Graphite Ball Nose End Mill【2 Flutes R0.5-R6】 Now Available for Procurement

SAMHO is your reliable partner for all your procurement needs. We specialize in finding the best suppliers and ensuring the highest quality products for your business. The Graphite Ball Nose End Mill【2 Flutes R0.5-R6】 is a must-have tool for precision machining, offering exceptional performance and long-lasting durability.

2-Flute Ball Nose Diamond-Coated End Mill – Engineered for High-Precision Machining of Graphite and Ceramics

Specifically designed for hard and brittle non-metallic materials such as graphite and electroceramics, this 2-flute ball nose end mill features a high-adhesion diamond coating. It delivers excellent wear resistance, thermal stability, and superior surface finish. Proven in-field tool life exceeds 18 hours, making it ideal for dry machining and MQL applications on CNC machining centers.

High-Adhesion Diamond Coating for Exceptional Wear Resistance
Engineered with a durable diamond coating that offers extreme hardness and chemical inertness. This coating effectively resists graphite particle abrasion and prevents edge micro-chipping under dry cutting conditions, significantly extending tool life.

Ball Nose Geometry – Ideal for 3D Contours and Mold Cavities
The spherical tip design is optimized for complex 3D profiles, internal corner transitions, and cavity milling. It ensures a smooth surface finish with minimal tool marks, ideal for fine detail work in graphite molds and ceramic components.

2-Flute Design Reduces Cutting Load and Heat Buildup
Sharp dual-flute geometry enables efficient chip evacuation, reduces cutting resistance, and minimizes heat accumulation—helping to prevent thermal cracking and maintain material integrity during high-speed machining.

Ultra-Fine Carbide Substrate – Superior Fracture and Thermal Resistance
Constructed from high-strength micro-grain carbide, the tool provides excellent toughness and crack resistance, making it suitable for extended use in abrasive environments like graphite and ceramics.

Precision CNC Ground – ±0.01mm Dimensional Tolerance
Manufactured using advanced 5-axis CNC grinding technology, ensuring exceptional dimensional accuracy and repeatability. Ideal for high-precision applications such as graphite electrodes, ceramic inserts, and complex mold geometry.

GRAR2-000【2 Flutes R0.5-R6】
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    Highly Recommend for Machining

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    Specialty

Specialty
End Mills

2 Flutes Ball Nose End Mill Catalog

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Total 20 Models-Unit(Mm)
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    GRAR 2-000 Milling Conditions

GRAR 2-000 Milling Conditions
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Frequently Asked Questions

Q1: What advantages do 2-flute graphite ball nose end mills have over 4-flute end mills in graphite machining?

A: In graphite machining, 2-flute ball nose end mills provide significantly more flute space for chip evacuation. This helps prevent graphite dust buildup and reduces re-cutting of fine particles.

Compared to 4-flute graphite ball nose end mills, 2-flute designs are more stable in dry, high-speed machining. They are especially effective in deep cavity milling and complex 3D surface finishing. Chip clogging risk is also much lower.

Q2: Why is a ball nose design recommended for graphite machining?

A: Ball nose geometry is ideal for 3D contouring and precision mold cavity finishing. It produces smooth tool paths and consistent surface quality.

In graphite, the rounded cutting edge reduces stress concentration. This helps lower edge chipping risk. It also improves electrode surface integrity, which is critical for EDM applications.

Q3: What are the typical applications for 2-flute graphite ball nose end mills?

A: These tools are mainly used for finishing and semi-finishing graphite electrodes. They are also used for complex 3D engraving and fine detailing in mold production.

Common applications include EDM electrode manufacturing, precision mold cavities, and micro-structure machining. They perform best on high-speed spindles operating around 20,000–60,000 RPM under dry cutting conditions.

Q4: How should you select coating for a 2  flute graphite ball nose end mill?

A: Graphite is highly abrasive, so tool coating is critical. Diamond coatings, especially Nano diamond, are strongly recommended.

Diamond coating significantly improves wear resistance and reduces material adhesion. It also minimizes carbon buildup on the cutting edge. Uncoated tools are only suitable for short runs or low-precision machining.

Q5: What are the most common failure modes in 2-flute graphite ball nose end mills?

A: The most common failure causes include:

  • Poor chip evacuation leading to localized heat and accelerated wear
  • Insufficient spindle speed causing excessive cutting load
  • Incorrect feed rate resulting in tip chipping
  • Failure to remove graphite dust, leading to secondary abrasion
  • Vibration caused by weak tool holding or low machine rigidity

Proper parameter tuning and a clean, stable dry-cutting environment are essential for maximizing tool life.

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