- Type I, Type II and Type III anodizing
- 3-axis, 4-axis and 5-axis CNC machining
- Machining tolerances down to ±0.01 mm
- Worldwide delivery support
Core Advantages of Our Anodized CNC Machining Parts
- Enhanced Hardness—The dense oxide layer can significantly improve the wear resistance of the CNC machining parts, making them more durable and long-lasting.
- Better Corrosion Resistance—By electrolytic treatment, a long-term, dense oxide layer is formed on the surface of your CNC-machined parts to offer better corrosion resistance, withstanding various harsh environments.
- Customizable Colors—No matter where you use the anodized CNC-machined parts, our customizable service can always meet your needs for diverse surface colors.
- Super Versatility—Anodizing is suitable for aluminum parts, titanium parts, magnesium parts, niobium parts, zinc parts, and more CNC-machined metal parts, and we support all the mentioned materials for anodized CNC machining parts.
Custom Anodized CNC Machined Parts — Type I, II & III
As a professional CNC manufacturer, DSR combines CNC milling, turning, drilling and tapping with anodizing project management. From rapid prototyping to mass production, DSR can provide you with custom aluminum alloy parts machining and anodizing services, while ensuring dimensional accuracy, consistent surface treatment, and complete quality inspection reports.
Professional Anodized CNC Machining Parts Manufacturer in China
As a professional anodized CNC machining parts supplier, we support three methods to anodize your CNC machining parts. Those are chromic acid anodizing, sulfuric acid anodizing, and hardcoat anodizing, which are suitable for different applications. Select wisely based on your needs.
Our factory is equipped with advanced CNC machining centers, which can automatically process your parts, no matter how complex they are, with fewer setups. This enables us to promise you a quick turnaround time and very tight tolerance, making room for the anodizing layers.
DSR also provides a wide range of customizable services. Please send your drawings of the parts and your expectations for materials, quantity, delivery time, and any other requirements. Our team of engineers will review your drawings for manufacturability, materials, and processing difficulty, and provide you with a formal quote and delivery estimate within 24 hours.
| Category | Details |
| Anodizing Types | Type I, Type II and Type III hardcoat |
| Common Materials | 6061, 6063, 7075, 5052 and selected 2000-series aluminum |
| CNC Processes | Milling, turning, drilling, tapping and 3/4/5-axis machining |
| Machining Tolerance | Down to ±0.01 mm on selected features before anodizing |
| Surface Options | Clear, black, red, blue, gold and custom colors |
| Inspection | Dimensional inspection and reports available on request |
| RFQ Response | Formal quotation within 24 hours |
Various Types of Anodized CNC Machining Parts
Over the past decade, we have provided customized anodized CNC machining services to customers in more than 50 countries worldwide. If you have any customized requirements for anodized CNC-machined parts, please let us know in advance. Click the button below to get your quote!
Anodized Aluminium Bushings
Support machining aluminum alloys 2000 series,6000 series, 7075, 5052, etc. Diverse color options.
Anodized Aluminium Connectors with Thread
Type II anodized surface. Green, red, silver, and more customized colors. High precision CNC drilling, tapping, and milling.
Black Anodized Brackets for Precision Equipment
Matte black anodized finish. We support engraving the brand logo and the specific model on the parts.
Adnoized Precision 5-Axis CNC Milled Turbine Blades
High precision 5-axis CNC machining. Complete multiple processes within a single clamp. Matte gold surface color.
Switch Box Anodized Aluminum CNC Machined Housing
IP54 dust-proof and waterproof. Outside size: 600 x 400 x 200 mm. Designed for an outlet box. Black and green are available.
CNC Machining Anodized Dental Implant Guide Drill
Drill diameter: 3.5 mm. 11.5 mm in length. We support laser engraving the customized brand logo.
CNC Machined Anodized Orthopedic Implants Bone Nails
Material: made of aluminum alloy. Excellent biocompatibility. Nail diameter: 1.5 mm. Customizable color, reusable.
Blue Anodizing Aluminum Lathe Spare Parts
Universal spare parts for multiple purposes. Polished surface. High precision 3-axis CNC machining.
Red Color Anodized Aluminum CNC Machining Bushing
High precision 5-axis CNC machining. Inner bore diameter: 12 mm. Total length: 18 mm. High strength and excellent corrosion resistance.
CNC-Machined Anodized Violet Aluminum Bolts
Made of 6063 aluminum alloy. Inner bore diameter: 1.2 mm. Outer bore diameter: 1.5 mm. High precision CNC turning and tapping. Purple anodized surface.
CNC-Machined Anodized Aluminum Clamp Parts
Made of 6063 aluminum alloy. High strength, high rigidity, and lightweight. High precision 5-axis CNC machining.
CNC-Machined Anodized Aluminum Tubes
Made of 6061 aluminum alloy. Thin, blue anodized surface. Tolerance: ≤ ± 0.01 mm. High precision 3-axis CNC turning, milling, and drilling.
CNC-Machined Anodized Water Cooling Blocks Part
Made of 6061 aluminum alloy. Lightweight, high-strength. Available in a wide range of colors, such as blue, silver, brass, matte black, etc.
CNC-Machined Anodized Aluminum Shaft Collar
High precision 3-axis CNC machining. 3/4 bore ring. Tolerance: ≤ ± 0.01 mm. Bore diameter: 12 mm. Various customizable colors.
Anodized CNC-Machined Adjustable Shafts for Photography Accessories
Made of 6063 aluminum alloy, high strength, high rigidity, light weight. Green, orange, or pink anodized surface. High precision 3-axis CNC machining.
CNC-Turned Black Anodized Flexible Drive Shaft
Universal 90-degree joints drive shaft. High precision 4-axis CNC milling and turning. Made of 6061 aluminum alloy. High rigidity, high strength, lightweight.
Choose the Right Anodizing Type for Your Part
The best anodizing process depends on corrosion resistance, wear requirements, appearance and dimensional tolerance. Our engineers review these factors before recommending a finish.
Type I — Chromic Acid
Thin coating with corrosion protection and limited dimensional change. Commonly considered for aerospace and precision applications.
Type II — Sulfuric Acid
Type II is suitable for decorative colors, corrosion resistance, and general industrial applications.
Type III — Hardcoat
Thicker and harder coating for parts requiring improved wear resistance and durability. Critical dimensions may require compensation or masking.
Typical Applications of Anodized CNC Machining Parts
AerospaceLightweight aluminum alloy parts (such as 7075, 6061) can maintain high strength and excellent corrosion resistance in harsh environments after anodizing. They are used in aircraft internal brackets, instrument panel housings, sensor housings, drone structural parts, etc.
AutomotiveHard anodizing is usually used for specific CNC-machined parts that require high hardness and wear resistance. It can also resist corrosion caused by oil, moisture, salt, etc., in the automotive operating environment.
ElectronicsAnodized CNC-machined parts offer excellent wear resistance, a stylish and beautiful metal texture, a wide range of color options, and are not prone to fading. They are widely used in consumer electronics such as laptop cases, mobile phone holders, wearable device cases, and high-end stationery.
Medical DevicesBiocompatible aluminum alloy and titanium alloy CNC-machined parts have a highly inert surface after anodizing, making them easy to disinfect and sterilize. They are commonly used in surgical instruments, medical equipment components, etc.
Architectural and ConstructionDecoration companies or designers may choose anodized aluminum CNC parts to make some interior decorations, such as handrails, brackets, etc.
Color Consistency Starts Before Anodizing
Material Control
For batch parts, we use the same alloy materials and temper conditions as much as possible to reduce appearance differences.
Surface Preparation
We provide CNC machining, blasting, polishing, and brushing. These processes will change the gloss and color visual effects after anodizing.
Sample Approval
A physical standard sample provides more reliable reference standards.
Batch Inspection
Under unified lighting conditions, we will compare mass-produced anodized parts.
Why Choose DSR's Anodizing Process?
Successful anodizing starts before the part enters the anodizing line. We review material, machining allowances, critical dimensions and appearance requirements as one complete project.
Dimensional Control
We review coating buildup on bores, threads, mating faces and other critical features before machining. Masking and machining allowances are planned according to your drawing requirements.
Consistent Appearance
Alloy composition, tempering conditions, and surface texture can all affect the final color of the part. We will control these variables to ensure that the part appearance meets your requirements.
Prototype to Production
From single prototype manufacturing to mass production, we provide full support for every manufacturing stage of your project.
Machining & Anodizing Under One Team
Our team can provide you with machining and anodizing processing services. This can help you effectively reduce the handover and communication risks between suppliers.
Repeatable Results for Future Orders
The approved processing, surface treatment and inspection requirements have all been documented. This ensures that for subsequent orders, your parts can maintain consistency in quality and appearance.
Inspection Before Shipment
Parts are checked for dimensions, surface condition and finish requirements before shipment. Additional inspection documentation can be provided based on your project.
Quality Control From Machining to Final Anodizing
After anodizing, precision machined parts rely on our strict quality control process to ensure excellent surface finish and specifications. Our quality inspectors check the specifications of parts both before and after oxidation to ensure their tolerance specifications meet customer requirements. They also use film thickness gauges to detect whether the oxide layer thickness of the parts meets standards.
For parts that require coloring, to ensure these parts achieve uniform and consistent color surface effects, quality inspectors also use color cards for comparison to avoid color difference issues in parts.
Meanwhile, we also have a comprehensive quality control system, including incoming material inspection, in-process machining checks, pre-anodizing preparation, and post-anodizing inspection. We are committed to providing our customers with high-quality anodized parts.
A Wide Range of Color Options
The color of anodized CNC machining parts is determined by many factors, including the type of anodizing, the material, and the dyeing methods. Below are the common options for surface colors:
Clear Anodizing: It retains the metallic sheen of the CNC-machined parts,
Dark Anodizing: Hardcoat anodized finish creates a darker, matte finish
Custom Colors: Black, gold, red, blue, green, and various other colors available in DSR.
Brushed Finish: It brings a brushed texture to the surface of your CNC-machined parts and is done before the anodizing.
Choose the Right Aluminum Alloy for Machining and Anodizing
Different aluminum alloys exhibit varying colors, luster, and surface uniformity after anodization. When selecting materials, you should consider both mechanical properties and the final surface appearance of the parts.
DSR can manufacture aluminum alloy parts of different grades for you. We can formulate the most suitable surface treatment solutions according to your requirements. Below are several commonly used aluminum alloy grades. This table helps you quickly make appropriate selections based on part applications.
| Material | Suggestion |
| 6061 | A common choice for machined parts requiring a good balance of strength, machinability and anodizing response. |
| 6063 | This grade of aluminum alloy is commonly used for decorative parts with high requirements for surface appearance and color. |
| 7075 | This grade of aluminum alloy is suitable for high-strength parts, but the alloy composition may affect the consistency of color and surface finish. |
| 5052 | This material has good corrosion resistance and formability. If you have strict requirements for appearance consistency, I suggest you confirm the final appearance effect of the parts through samples. |
| 2024 | This material has high strength, but its copper content may affect the appearance and corrosion resistance of anodized parts. |
From Drawing Review to Production
1. Upload Your Drawings
Send us your drawing files (STEP, STP, IGES or PDF). You can also specify requirements such as part quantity, material, surface treatment, etc.
2. Engineering Review and Quote
Our engineers will evaluate the manufacturability of anodized parts, including critical tolerances of the parts and anodizing requirements.We typically provide quotes within 24 hours.
3. Sample Production
For standard projects, prototype samples are usually completed within 7 days. The final timeline will be confirmed after drawing review.
4. Inspection and Mass Production
After the sample is approved, we will arrange production according to the confirmed drawings and surface treatment standards.
5. Final Inspection and Shipment
Parts are inspected, protected against scratches and packed according to project and shipping requirements.
What is the anodizing of CNC machining parts?
Anodizing is a surface treatment method for metal CNC-machined parts. By placing the machined parts in an electrolyte to react, a dense oxide layer is formed on their surface, making the parts have better wear resistance, corrosion resistance, and various colors of appearance.
What material suits anodizing best? Why?
Aluminum. Here are the reasons:
First, aluminum can form a natural oxide layer when exposed to air, and after electrolysis, it can form a denser, more uniform, and more stable oxide film.
Aluminum and aluminum alloys are lightweight and have excellent specific strength, making them ideal materials for parts in consumer electronics, automobiles, architectural decoration, and other fields, where anodizing is widely needed.
Will anodizing affect the accuracy after CNC machining?
Yes. This is unavoidable, especially when using Type III anodizing.
Anodizing, especially Type III anodizing (hard anodizing), forms a layer of aluminum oxide on the surface of the part. This layer increases the overall dimensions of the part. The oxide layer grows approximately 50% inward and 50% outward, meaning it affects both the exterior and interior dimensions of the part.
Tight tolerances, especially those less than ±0.005 inches, can be significantly affected by anodizing. For example, after hard anodizing, a reamed hole may become too small, or a threaded hole may become unusable.
In addition, hard anodizing can reduce the roughness of CNC-machined parts.
How can you ensure consistent color for large-scale production?
When anodizing CNC-machined parts from the same production batch, we use standardized current parameters to achieve a consistent oxide layer on the surface.
Our dyes are also managed by batch, ensuring that the same dye is used for each dyeing process.
After dyeing, we perform optical inspection on the CNC-machined parts to ensure consistent coloring.
Can you do partial anodizing for my parts?
Yes, we can do partial anodizing for CNC-machined parts by mechanical masking, laser ablation, or chemical masking, based on your specific needs.
