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3mm End Mill

  • Solid Carbide 4 Flute Square End Mill

  • 4 Flute

  • Spiral

  • High Speed Cutting

  • Cast Iron, Alloy Steel, Tool Steel,Stainless Steel, High-temp Alloys, Titanium Alloys, Non-ferrous Alloys

  • TiAlN, TiSiN, Nano

  • 0.005-0.01

  • Stub, Standard, Extra-Long,38-330mm

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3mm End Mill Specifications


3mm End Mill Standard type

Model No. Flute Diameter (mm) Flute length (mm) Shank Diameter (mm) Overall length (mm)
D3*8*D4*50 3 8 4 50


3mm End Mill Features


1、High Heat Resistance:

Carbide end mills can withstand high temperatures generated during the milling process, allowing for faster cutting speeds and increased productivity.


2、Superior Cutting Performance:

The hardness and heat resistance of carbide square end mills contribute to their superior cutting performance.


3、Stability and Rigidity:

Carbide square end mills offer high rigidity and stability during cutting, minimizing tool deflection and vibrations.


4、Reduced Chatter:

The rigidity and stability of carbide square end mills help minimize chatter during the milling process.


3mm End Mill Advantages:


1、Exceptional Hardness:

Carbide square end mills are renowned for their exceptional hardness. This hardness allows them to maintain their cutting edge for longer periods, resulting in extended tool life and reduced tool replacement costs.


2、High Heat Resistance:

Carbide end mills exhibit high heat resistance, enabling them to withstand the elevated temperatures generated during the machining process. This feature allows for higher cutting speeds and increased productivity.


3、Superior Cutting Performance:

The combination of hardness and heat resistance in carbide square end mills contributes to their superior cutting performance. They can efficiently remove material and create precise square-shaped features with excellent surface finishes.


4、Increased Productivity:

With their exceptional cutting performance and heat resistance, carbide square end mills contribute to increased productivity. They allow for higher cutting speeds, reducing machining time and increasing overall efficiency.


5、Excellent Chip Evacuation:

Carbide end mills often feature multiple flutes, which aid in efficient chip evacuation. This helps prevent chip clogging and enhances the surface finish of the machined part.


6、Stability and Rigidity:

Carbide square end mills offer high levels of stability and rigidity during cutting. This characteristic minimizes tool deflection and vibrations, resulting in improved accuracy and dimensional precision.


7、Wide Range of Sizes and Configurations:

Carbide square end mills are available in a wide range of sizes, flute configurations, and cutting edge geometries. This allows for precise tool selection based on specific machining requirements.


3mm End Mill Coatings:


The purpose of applying a coating to a carbide end mill is to enhance its performance, durability, and overall effectiveness in various machining operations.


Titanium Nitride (TiN):

TiN is a popular coating choice for carbide square end mills. It offers excellent wear resistance and provides a protective layer on the tool's surface, reducing friction and extending tool life. TiN coatings are effective when machining non-ferrous materials and can enhance performance in general-purpose milling applications.


Titanium Carbonitride (TiCN):

TiCN coatings offer improved hardness and heat resistance compared to TiN. They are suitable for machining ferrous materials, including steel and cast iron. TiCN coatings provide excellent wear resistance, reduced friction, and increased tool life.


Aluminum Titanium Nitride (AlTiN):

AlTiN coatings are known for their exceptional hardness, high-temperature resistance, and excellent wear resistance. They are suitable for machining abrasive materials, such as hardened steels and stainless steels. AlTiN coatings provide extended tool life and enhanced performance in high-speed machining applications.


Diamond-Like Carbon (DLC):

DLC coatings offer excellent hardness, low friction, and high lubricity. They are effective when machining aluminum, copper, and non-ferrous materials. DLC coatings can reduce built-up edge and enhance the chip flow, resulting in improved surface finish and reduced cutting forces.


3mm End Mill Applications


A 3mm end mill, which has a cutting edge diameter of 3mm, is a versatile cutting tool commonly used in machining operations that require precision and versatility. Here are some typical applications of a 3mm end mill:


1、Slotting:

3mm end mills are frequently used for slotting operations, which involve cutting narrow, deep channels or grooves into a workpiece. This is essential in various industries for accommodating components, fasteners, or keyways.


2、Milling Small Pockets:

When you need to create small pockets or recesses in a workpiece, a 3mm end mill is an excellent choice. This is commonly seen in mold and die making, where precise pockets are necessary for components to fit correctly.


3、Profile Milling:

Profile milling involves cutting along the outline or perimeter of a workpiece to create specific shapes. 3mm end mills are used for detailed profile milling tasks in applications such as custom machining and production of small parts.


4、Engraving:

3mm end mills can be employed for engraving tasks, adding serial numbers, logos, or decorative patterns onto surfaces. This is useful in industries like jewelry making, product branding, and custom woodworking.


5、Micro-Machining:

In precision micro-machining applications, a 3mm end mill can create intricate details on small workpieces. This is valuable in industries like electronics, aerospace, and medical devices.


6、Prototype Development:

During the prototyping phase of product development, a 3mm end mill helps create small-scale models and prototypes with precision and fine details. This is common in industries ranging from automotive to consumer electronics.


7、Electronics Production:

In the manufacturing of electronic components, such as printed circuit boards (PCBs), 3mm end mills are used for precision machining, including creating tiny traces, drilling holes, and milling features.


8、Dental Prosthetics:

The dental industry utilizes 3mm end mills for machining dental prosthetics, including crowns, bridges, and dentures, which require precise shaping and detailing.


9、Tool and Die Making:

Tool and die makers use 3mm end mills for creating small features and details on molds, dies, and tooling used in various manufacturing processes.


10、Small Parts Manufacturing:

When producing small components, particularly those with fine details, a 3mm end mill is valuable. It's used in industries like watchmaking and precision engineering where accuracy is crucial.


11、Artistic and Custom Woodworking:

Woodworkers and artists use 3mm end mills for fine woodworking and carving intricate designs or patterns into wooden surfaces.


12、Automotive Components:

In the automotive sector, 3mm end mills are employed for machining smaller components like engine parts, brackets, and connectors, which require precision and intricate detailing.


13、Aerospace Components:

For machining aerospace components, 3mm end mills are used in applications where precision and small-scale features are essential, such as in aircraft structural parts and engine components.


In summary, the 3mm end mill's versatile size and precision cutting capabilities make it a valuable tool for creating intricate details, precise profiles, and accurate dimensions on various materials, from metals and plastics to wood and ceramics. Its wide range of applications makes it indispensable in many industries.


Video Of 3mm End Mill


FAQs for 3mm End Mill


1、What is a 3mm end mill?

A 3mm end mill is a cutting tool with a 3mm diameter cutting edge, commonly used for precision machining and shaping of various materials.


2、What materials can I cut with a 3mm end mill?

You can cut a wide range of materials with a 3mm end mill, including metals (aluminum, steel, brass), plastics, wood, ceramics, and composites. The choice of material will influence the specific type of end mill and cutting parameters.


3、What are the common applications for a 3mm end mill?

Common applications include slotting, milling small pockets, profile milling, engraving, micro-machining, prototype development, electronics production, dental prosthetics, and tool and die making.


4、How do I select the right 3mm end mill for my project?

Consider factors like the material you're working with, the type of cut you need (e.g., slotting, profiling, engraving), and the desired surface finish. Different end mills, such as ball nose or square end, are suited for specific applications.


5、What is the difference between a 2-flute and a 4-flute 3mm end mill?

A 2-flute end mill has two cutting edges, while a 4-flute end mill has four. 2-flute end mills are generally better for chip evacuation and are often used in softer materials, while 4-flute end mills provide more cutting edges for improved surface finish and are suitable for harder materials.


6、How do I calculate the cutting speeds and feeds for a 3mm end mill?

Cutting speeds and feeds depend on factors like material type, tool material, and machine capabilities. You can use cutting speed and feed rate formulas, or consult cutting tool manufacturers' recommendations for specific combinations.


7、What are the maintenance and care tips for 3mm end mills?

Keep them clean and free of debris, and store them properly. Regularly check for signs of wear, such as dull cutting edges, and replace as needed. Lubrication may be necessary, depending on the material and tool.


8、Can I use a 3mm end mill in a standard milling machine?

Yes, you can use a 3mm end mill in a standard milling machine, provided that the machine has the necessary spindle speed and rigidity to handle the cutting forces. Ensure your machine is properly calibrated for precision work.


9、What safety precautions should I take when using a 3mm end mill?

Always wear appropriate personal protective equipment, including safety glasses or a face shield. Secure your workpiece properly to prevent movement during machining, and be aware of the cutting tool's location at all times.


FAQs for the factory :


1、Are you a factory?

Yes, we are facotry. Founded in 2004,Ruiyu Tools has established itself as a trusted provider of high-quality drill bits, end mills, and other non-standard tools.


2、How to select models?

Before purchasing, please contact us to confirm model No. and drawings to avoid any misunderstanding.


3、Do you offer OEM & ODM service?

Yes.We can supply OEM&ODM and make customized design for any specific application.


4、How can we know the product quality?

We suggest you ording a sample. And you can also send us email with detailed photos and specifications for checking if you cannot get enough information in the product page.


5、What's the delivery time?

Non-standard tools 5-10 Working days,Standard tools usually 1-2 days.

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