3-Flute End Mills for Aluminum
Solid Carbide 3 Flute End Mill for Aluminum | U-Shape High Polished CNC Router Bit
Boost your aluminum machining with our U-Shape 3 Flute Solid Carbide End Mills. Featuring a high-polished "U" design for superior chip evacuation and mirror finishes. Available in standard, long, and extra-long sizes (1mm-16mm). Factory direct pricing & free samples available!
Product Function
Designed specifically for non-ferrous materials, this 3 Flute Tungsten Carbide End Mill is the ultimate tool for high-speed machining of Aluminum Alloys (6061, 7075), Copper, Brass, and Plastics.
The unique geometry serves three main functions:
- High-Volume Slotting & Profiling: Capable of aggressive material removal rates (MRR) without clogging.
- Fine Finishing: The polished cutting edge produces a mirror-like surface finish on the workpiece, often eliminating the need for secondary polishing.
- Chip Management: The specialized U-Shape gullet ensures aluminum chips curl and evacuate immediately, preventing chip re-cutting and tool breakage.
Product Features
- Material: Premium Micro-Grain Tungsten Carbide (HRC55) for exceptional wear resistance and tool life.
- Geometry: U-Shape Design with a high helix angle (typically 45° or 55°). This deep valley design maximizes chip evacuation space.
- Surface Treatment: High Polished / Bright Finish. We grind the flutes to a mirror finish to reduce friction and prevent "Built-Up Edge" (aluminum sticking to the tool).
- Precision: Shank tolerance h6, ensuring tight run-out control for high-speed spindles (20,000+ RPM).
- Versatility: Suitable for Side Milling, End Milling, Slotting, and Ramp Milling.
Specifications
Below is our standard stock list ranging from micro-diameters to heavy-duty sizes, including standard, long, and extra-long reach options.
Cutter Dia (mm) | Shank Dia (mm) | Length of Cut (mm) | OAL (mm) |
|---|---|---|---|
Standard Length Series | | | |
1.0 | 4 | 1 / 2 / 3 | 50 |
1.5 | 4 | 2 / 3 / 4.5 | 50 |
2.0 | 4 | 2 / 3 / 4 / 6 | 50 |
2.5 | 4 | 3 / 4 / 5 / 7.5 | 50 |
3.0 | 3 / 4 / 6 | 3 / 4 / 6 / 9 | 50 |
4.0 | 4 / 6 | 4 / 6 / 8 / 12 | 50 |
5.0 | 5 / 6 | 15 / 20 | 50 / 60 |
6.0 | 6 | 6 / 8 / 10 / 12 / 18 | 50 |
6.0 | 6 | 20 | 60 |
6.5 | 8 | 19.5 | 60 |
7.0 | 8 | 21 | 60 |
7.5 | 8 | 22.5 | 60 |
8.0 | 8 | 8 / 10 / 12 / 14 / 24 | 50 |
10.0 | 10 | 10 / 12 / 14 / 16 / 18 / 20 | 60 |
10.0 | 10 | 30 | 75 |
11.0 | 12 | 33 | 75 |
12.0 | 12 | 12 / 14 / 16 / 18 / 20 | 60 |
12.0 | 12 | 36 | 75 |
Long & Extra Long Series | | | |
1.0 | 4 | 3 | 75 / 100 |
1.5 | 4 | 4.5 | 75 / 100 |
2.0 | 4 | 6 | 75 / 100 |
2.5 | 4 | 7.5 | 75 / 100 |
3.0 | 3 / 4 | 9 | 75 / 100 |
4.0 | 4 | 14 / 16 | 75 |
4.0 | 4 | 20 / 25 / 30 | 100 |
5.0 | 6 | 25 | 75 |
5.0 | 6 | 30 | 100 |
6.0 | 6 | 25 / 30 | 75 |
6.0 | 6 | 25 / 40 | 100 |
6.0 | 6 | 45 | 150 |
8.0 | 8 | 32 | 75 |
8.0 | 8 | 35 / 40 | 100 |
8.0 | 8 | 50 | 150 |
10.0 | 10 | 40 | 100 |
10.0 | 10 | 55 | 150 |
12.0 | 12 | 45 | 100 |
12.0 | 12 | 60 | 150 |
16.0 | 16 | 45 | 100 |
16.0 | 16 | 70 | 150 |
16.0 | 16 | 90 | 200 |
RPM/Feed Reference (General Aluminum Machining)
Note: These parameters are for reference. Adjust based on machine rigidity, cooling, and depth of cut.
Diameter (mm) | RPM (Speed) | Feed Rate (mm/min) |
|---|---|---|
1.0 - 2.0 | 15,000 - 24,000 | 300 - 600 |
3.0 - 4.0 | 10,000 - 18,000 | 800 - 1500 |
5.0 - 6.0 | 8,000 - 12,000 | 1200 - 2500 |
8.0 - 10.0 | 6,000 - 10,000 | 2000 - 3500 |
12.0+ | 4,000 - 8,000 | 2500 - 4500 |
Promotion Policy
We value our partnership and offer exclusive incentives for new and loyal customers:
- Free Sample: Free sample can be provided, if clients agree to pay for shipping cost.
- First Order Coupon: New clients can enjoy USD50 discount coupon for first order, if the total order amount is more than USD500.
- Big Order Discount: Clients can enjoy 2%~5% discount, if the total order amount is more than USD5000.
Clients Benefits
Why choose our Tungsten Carbide Tools?
- Factory Direct: No middleman. You get the best price-to-performance ratio in the market.
- Consistency: Our CNC grinding machines (Anca/Walter) ensure every batch meets the same strict tolerance.
- Inventory: We stock standard sizes (as listed above) for immediate shipment.
- Customization: Need a non-standard length or specific coating (like DLC)? We offer OEM/ODM services with low MOQs.
FAQ
Q1: Is this end mill suitable for steel?
A: No. This 3-flute U-shape design is optimized for Aluminum and Non-ferrous metals. For Steel, we recommend our 4-flute AlTiN coated series.
Q2: What is the advantage of the "U Shape"?
A: The U-shape flute provides a larger space for chip evacuation. Aluminum chips are sticky and voluminous; the U-shape prevents chips from packing inside the flute, which causes tool breakage.
Q3: Do you offer DLC (Diamond-Like Carbon) coating?
A: Yes! The standard version is Uncoated/Bright Finish (Polished), which is excellent for aluminum. However, for extended tool life in high-production environments, we can apply DLC coating upon request.
Q4: What is the shipping time?
A: Stock items ship within 24-48 hours. Large orders or custom specs typically take 7-10 days.
Q5: Can I mix sizes to reach the $500 coupon threshold?
A: Absolutely. You can mix any diameters or series (Standard/Long) to meet the promotion requirement.