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Products3 Flute Extra Long Reach End Mills for Aluminum (Up to 200mm) | Wholesale Factory
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3-Flute End Mills for Aluminum In-StockReady to ShipRecommended

3 Flute Extra Long Reach End Mills for Aluminum (Up to 200mm) | Wholesale Factory

Direct China factory for 3-flute extra long reach carbide end mills. Specialized for deep cavity aluminum milling (6061/7075). ISO certified, free samples, and wholesale discounts. Reach up to 200mm with zero chatter. Inquire now!

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3 Flute Extra Long Reach Carbide End Mill for Aluminum | China Factory Direct

🚀 High-Performance Deep Cavity Machining Solutions

The 3 Flute Tungsten Carbide End Mill for Aluminum is the "Goldilocks" tool for non-ferrous machining, bridging the gap between 2-flute and 4-flute designs.
Our Extra-Long Series is specifically engineered with a reinforced core diameter to minimize deflection and vibration during deep-reach aluminum milling, ensuring a superior surface finish even at extended lengths up to 200mm.

Why Choose Our 3-Flute Extra Long Series?

  • Vibration Reduction: The 3-flute geometry provides superior core strength compared to 2-flute mills, significantly reducing chatter and vibration during high-speed machining.
  • Superior Surface Finish: With more cutting edges per revolution, it delivers a finer wall and floor finish, often eliminating the need for a separate finishing pass.
  • Deep Pocketing & Slotting: Our Extra Long Reach (up to 200mm) allows for deep cavity machining where standard tools cannot reach, maintaining rigidity without rubbing.
  • Efficient Chip Evacuation: Large, mirror-polished gullets ensure rapid chip removal, preventing re-cutting or clogging even in deep slots.

Optimized for High-Grade Aluminum Alloys:
Our 3-flute series is specifically calibrated for high-speed milling in Aluminum 6061-T6, 7075-T6, and 2000 series alloys. The 45° helix angle is optimized to handle the high ductility of these materials, ensuring that chips are sliced cleanly rather than torn.

🛠️ Product Features

  • Premium Material: Ultra-Fine Micro Grain Tungsten Carbide (HRC55) for extreme wear resistance.
  • Uncoated & Mirror Polished: Specialized high-polish flutes minimize friction and prevent Built-Up Edge (BUE)—the common issue of aluminum sticking to the tool.
  • High Helix Angle: 45° / 55° design for smooth shearing action and efficient vertical chip ejection.
  • Precision Shank: Standard straight shank with h6 tolerance for high-precision collets and shrink-fit holders.


📊 Technical Specifications

As a leading carbide end mill factory in China, we provide specialized extra long reach tools for precision mold making and aerospace components.
Cutter Diameter (D)
Shank Diameter (d)
Flute Length (L2)
Overall Length (L1)
Series Type
1.0 - 2.0 mm
4 mm
1 - 6 mm
50 mm
Standard
3.0 - 5.0 mm
3 / 4 / 6 mm
3 - 12 mm
50 mm
Standard
6.0 - 12.0 mm
6 - 12 mm
6 - 36 mm
50 / 60 / 75 mm
Standard
1.0 - 5.0 mm
3 / 4 / 6 mm
3 - 30 mm
75 / 100 mm
Long Reach
6.0 - 16.0 mm
6 - 16 mm
25 - 45 mm
75 / 100 mm
Long Reach
6.0 - 16.0 mm
6 - 16 mm
45 - 70 mm
150 mm
Extra Long
16.0 mm
16 mm
90 mm
200 mm
Extra Extra Long
💡 Custom Service: Custom neck diameters, reach lengths, and OAL are available. Contact our engineering team for OEM/ODM services. 💡 Pro Engineering Tip: Managing L/D Ratio：When using our Extra Extra Long (200mm)series, the Length-to-Diameter (L/D) ratio can exceed 12:1. To maintain a T.I.R < 0.005mm, we recommend using high-precision hydraulic or shrink-fit chucks. This setup maximizes the vibration-dampening properties of our reinforced carbide core.




📈 Recommended Cutting Parameters (Aluminum Alloys)

Note: 3-Flute mills allow for higher feed rates. Adjust based on machine rigidity and cooling.
Diameter (D)
RPM (min⁻¹)
Feed (mm/min)
Slotting (ap)
Side Milling (ae)
3.0 mm
15,000 - 30,000
600 - 1,500
0.2D
0.1D
6.0 mm
10,000 - 18,000
1,500 - 3,000
0.5D
0.2D
10.0 mm
8,000 - 12,000
2,500 - 4,500
1.0D
0.3D
16.0 mm
5,000 - 8,000
3,000 - 5,000
1.0D
0.5D
  • Coolant: Flood coolant is strongly recommended to flush chips.
  • Long Reach Note: For tools with OAL > 100mm, reduce RPM and Feed by 30-50% to ensure stability.


💰 B2B Promotion & Factory Policy

  • Free Samples: Available for quality testing (client covers shipping).
  • First Order Coupon: **USD
    50OFF∗∗fornewclients(orders>USD50 OFF** for new clients (orders > USD
    
    500).
  • Bulk Discount: 2% - 5% OFF for wholesale orders (> USD $5,000).



Looking for Hardened Steel Solutions?

If your project involves materials harder than HRC50, explore our [HRC70 Square Carbide End Mill Series]—engineered for extreme heat resistance and precision in die steel.


❓ FAQ

Q1: Why choose 3-flute over 2-flute for Aluminum? A: 3-flute offers a stronger core and better balance, allowing for higher feed rates and smoother finishes in peripheral milling while still maintaining excellent chip clearance.
Q2: Are these tools coated? A: Our standard is Uncoated High Polish to prevent aluminum sticking. However, we offer DLC (Diamond-Like Carbon) or ZrN coatings for abrasive high-silicon aluminum alloys upon request.
Q3: Can I use 200mm long end mills at full speed? A: For Extra Extra Long tools, we recommend starting at 50% of standard speed/feed to identify the vibration limit of your setup, then ramping up.