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> Cutting Tools > Miniature Indexable End Mills 3pcs/set,12mm,15mm,18mm,with TiN Coated Inserts 
• Shank: 12 mm straight shank with a single flat; high-strength alloy steel; overall length approx. 80–110 mm
• Flutes: Single-flute design → low cutting resistance, excellent chip evacuation; suitable for low-power machines
• Insert: Mini carbide indexable insert with TiN coating
◦ Gold finish
◦ Hardness ≈ HV 2300
◦ Heat resistance ≈ 580°C
◦ Low-friction, anti-built-up-edge
• Cutting Diameter: Typically φ12–φ18 mm (miniature class)
• Max Depth of Cut: ap ≈ 3–6 mm (depends on insert type)
• Recommended Spindle Speed: 8,000–25,000 rpm (higher for aluminum and non-ferrous materials)
2. Design Features & Advantages
Single-Flute Structure
• Small contact area → very low cutting forces
• Reduced vibration
• Ideal for thin-wall parts without deformation
• Large chip pocket → prevents chip welding in aluminum and copper machining
Indexable Inserts
• No resharpening required—just rotate or replace the insert
• Lower cost and higher machining uptime
TiN Coating
• General-purpose wear resistance
• Extends insert life by 1–3×
• Suitable for steel, cast iron, aluminum, stainless steel, and more
12 mm Standard Shank
• Single flat for stable clamping
• Compatible with most CNC mills and engraving machines using ER collets
3. Typical Applications
• Moldmaking: Small cavities, cores, inserts, engraving, lettering
• Non-ferrous Materials: High-speed milling of aluminum, copper, zinc alloys
◦ (≤20,000 rpm recommended)
• Precision Machining: Contour milling, side-wall finishing, shallow slotting, profile passes
