Aluminum U-Type Slot Cutter 3 Flute Solid Carbide Flat End Mill with Color Coating for CNC Router Milling

Introduction:

Our 3-flute U-type slot end mill is precision-engineered for high-speed aluminum machining, featuring a vibrant multi-layer color coating that reduces friction and prevents material adhesion. Designed with a flat nose geometry and optimized U-groove flute design, this solid carbide cutter delivers exceptional chip evacuation and mirror-like surface finishes in CNC routing and milling applications.

Ideal for aluminum alloys (6061, 7075), copper, and soft plastics, it outperforms standard end mills in tool life, cutting speed, and finish quality.

Features:

3-Flute U-Groove Design – Balanced for efficient chip clearance in aluminum

Multi-Layer Color Coating (Rainbow PVD) – Reduces heat buildup and material adhesion.
Flat Nose Geometry – Enables precise flat-bottom slotting and contouring.

Ultra-Fine Grain Carbide – German-grade substrate for maximum durability

High Helix Angle (45°) – Improves surface finish and reduces cutting forces.
Diameter Range – 1/8" to 1/2" (3mm–12mm) with custom sizes available.

Advantages Over Competitors

✅ 50% Faster Machining – Optimized for high-RPM CNC routers (up to 30,000 RPM).
✅ Anti-BUE Design – Coating prevents aluminum buildup on cutting edges.
✅ Superior Finish – Achieves Ra < 0.3μm (near-mirror quality).
✅ Extended Tool Life – 3X longer than uncoated tools in abrasive alloys.
✅ Reduced Vibration – Stable cutting in deep slots and thin-wall machining.

Typical Applications

• Aluminum Slotting – U-grooves for frames, heat sinks, and enclosures.

• Aerospace Components – Lightweight structural parts.

• Signage & Decorative Engraving – Clean edges in soft metals.

• PCB Milling – Precision routing of aluminum substrates.

• Prototyping – Fast material removal in 6061/7075 aluminum.

Detailed Picture

Our workshop:

Why Choose This End Mill?

Proven in Industry – Trusted by aerospace and automotive manufacturers.
Color-Coated Technology – Visual wear indicator (coating fade = resharpening time).
Custom Options – Special lengths, corner radii, or coatings (DLC, TiCN).
OEM Support – Private labeling and bulk discounts available.

Ideal for: CNC shops, aluminum fabricators, and high-volume production.

(Contact us for custom configurations or technical guidance!)

Promotion policy:

To help you experience our premium products, we’re excited to offer the following exclusive promotions for first-time buyers:

1.Free Test Samples

Get free samples (total value ≤ $20 USD) when you cover the international shipping cost.

Perfect for evaluating our product quality and performance risk-free.

2.$50 USD Discount on First Order

New customers can enjoy a $50 discount on the first order of $500 or more.

A great way to start our partnership with extra value!