What is a Diamond End Mill?
Diamond end mills are ultra-precision cutting tools designed for machining extremely hard and abrasive materials. Unlike traditional carbide tools, they feature diamond coatings (CVD or PVD) or polycrystalline diamond (PCD) tips, enabling efficient milling of non-ferrous super-hard materials like carbon fiber reinforced polymers (CFRP), graphite, ceramics, and hardened steel (>HRC60).
Key Features
Why choose diamond over carbide?
✅ Extreme Wear Resistance: Diamond is the hardest material (10/10 Mohs scale), ideal for CFRP and ceramics.
✅ High Thermal Conductivity: Dissipates heat faster than carbide, preventing workpiece damage.
✅ Mirror-Like Finishes: Achieve Ra <0.2μm surface quality in graphite and copper alloys.
✅ Long Tool Life: 5x longer lifespan than carbide in abrasive materials.
✅ Advanced Coatings: PVD diamond coatings for high-temperature applications (up to 800°C).
Technical Specifications：
| Attribute |
Details |
| Material |
PCD tip / Tungsten carbide body with diamond coating |
| Coating Options |
CVD diamond, PVD diamond, hybrid coatings |
| Shank Diameters |
3mm–16mm (metric) / 1/8″–5/8″ (imperial) |
| Flute Count |
2-4 flutes (variable helix for vibration control) |
| Helix Angle |
30°–45° (customizable) |
| Surface Finish |
Mirror-polished (Ra <0.4μm) |
| Max RPM |
25,000–40,000 (depending on diameter) |
Applications & Industries
Where diamond end mills excel:
✅ Aerospace: Milling CFRP airframe components and turbine blades.
✅ Automotive: Machining carbon fiber driveshafts and brake rotors.
✅ Medical: Precision cutting of ceramic dental implants and surgical tools.
✅ Electronics: Drilling holes in graphite electrodes for EDM.
✅ Energy: Manufacturing silicon carbide nozzles for solar panels.
Why Choose Our Diamond End Mills?
✅ Custom Coatings: Tailored for your material (e.g., hybrid diamond + TiAlN).
✅ Fast Delivery: Standard tools ship in 72 hours; custom orders in 10 days.
✅ Technical Support: Free milling parameter optimization by our engineers.
✅ Quality Guarantee: 100% inspected for runout, edge integrity, and coating adhesion.
Our company specializes in manufacturing and customizing a wide array of cutting tools, dedicated to boosting clients' production efficiency and slashing manufacturing costs. We offer comprehensive tool solutions tailored for various cutting materials, encompassing carbon steel (approx. HB225 hardness), alloy steel (HB225~325 hardness), pre-hardened steel (up to HRC45 hardness), quenched steel (HRC40~61 hardness), and cast iron. These solutions cater to diverse cutting needs, including straight cuts, curved cuts, L-shaped cuts, groove cuts, internal arc cuts, external arc cuts, T-shaped cuts, drilling, and threading.
Our carbide cutting tools excel in processing the aforementioned steel types, delivering exceptional performance with a precision tolerance of just ±0.02mm. This ensures that our customers can effortlessly achieve professional-grade cutting quality, making us your ideal partner for milling tool solutions.
We can provide customized OEM production services. If our standard carbide milling cutters do not meet your requirements, you can customize the diameter within 0.2mm-25mm, the total length from 50mm to 200mm, and choose flutes of 4F, 5F, 6F, or 8F. You can also add your own logo. Please feel free to contact us for any needs.
| Specification |
Shank
Diamter(D) |
Flute
Length(Lc) |
Full
Length (L) |
Diamter
(D) |
Flutes
(F) |
| 1/2"1"3"1/2"4F |
1/2" |
1" |
3" |
1/2" |
4F |
| 1/4"3/4"2-1/2"1/4"4F |
1/4" |
1/4" |
2-1/2" |
1/4" |
4F |
| 1/8"3/8"1-1/2"1/8"2F |
1/8" |
3/8" |
1-1/2" |
1/8" |
2F |
| 1/16"3/16"1-1/2"1/8"2F |
1/16" |
3/16" |
1-1/2" |
1/8" |
2F |
| 3/8"1"2-1/2"3/8"4F |
3/8" |
1" |
2-1/2" |
3/8" |
4F |
| 3/16"5/8"2"3/16"2F |
3/16" |
3/16" |
3/16" |
3/16" |
2F |
| 3/32"9/32"1-1/2"1/8"2F |
3/32" |
9/32" |
9/32" |
1/8" |
2F |
| 5/8"1-1/4"3-1/2"5/8"4F |
5/8" |
1-1/4" |
3-1/2" |
5/8" |
4F |
| 5/16"13/16"2-1/2"5/16"4F |
5/16" |
13/16" |
2-1/2" |
5/16" |
4F |
| 5/64"3/16"1-1/2"1/8"2F |
5/64" |
3/16" |
1-1/2" |
1/8" |
2F |
| 7/64"3/8"1-1/2"1/8"2F |
7/64" |
3/8" |
1-1/2" |
1/8" |
2F |
Q1: Are you a trading company or a manufacturer?
A: We are a manufacturer, specializing in this field of cutting tools for over 15 years.
Q2: What kinds of products do you provide?
A: We make carbide end mills, drills for drilling, reamers, milling cutters, forming drills, turning tools, thread mills, inserts, and we also cover various non-standard cutting tools.
Q3: Do you provide OEM or ODM services?
A: Yes, indeed. We offer both OEM and ODM services to cater to our clients' specific needs.
Q4: Do you have free samples or discounts?
A: Free samples can be provided if clients agree to pay the shipping cost. For the first order, new clients receive a USD50 coupon for orders over USD500, and enjoy a 5% discount for orders exceeding USD5000.
Q5: How do you ensure cutting tool quality?
A:We guarantee materials & workmanship, use top-quality carbide, and conduct rigorous ISO-compliant inspections from raw material to final product, with 100% key dimension checks before shipping.
Q6: Can I specify my own freight forwarder?
Of course, we can deliver the goods to the shipping agent designated by the customer.
Just 4 steps to process your order:
1.Drawing:You can send existing regular product images or 3D drawings of the product to our sales manager.
2.Quote:Based on the product specifications, requirements, and processing technology, we will provide a quotation. Please confirm the final requirements with our sales manager.
3.Produce:After confirming the contract and delivery schedule without any issues, we will arrange production upon receipt of payment to ensure timely delivery.
4.Delivery:Once the goods have passed quality inspection, they will be dispatched in accordance with the agreed upon timeline and logistics arrangements specified in the contract
Payment:
For the principles of transaction security and long-term cooperation, we generally adopt bank transfers and Western Union as payment methods, or we negotiate further based on the specific order.
Delivery:
Considering the product's weight, volume, transportation timeline, and freight costs, we provide multiple shipping solutions to fulfill your transportation requirements.
Express shipping:
EMS and DHL international express are commonly used, and deliveries typically arrive within 3 to 10 days,If your place is remote , need to pay more for remote place , or change to ship by EMS
Air Freight:
Air freight is safe and fast, suitable for urgent shipments and large items exceeding 100kg. It generally takes 3-10 business days, with varying transit times for different countries.
Sea Freight:
Sea Freight is suitable for large orders due to its low cost, but with slower delivery times, typically ranging from 30 to 50 days
