Customized CNC Milling Services
Precision CNC milling for prototypes and production parts in aluminum, steel, titanium, and engineering plastics. 3-axis, 4-axis, and 5-axis machining centers from Haas, DMG MORI, and Mazak run at our 9,800 m² facility in Shenzhen with ISO 9001, AS9100, and ISO 13485 quality systems.
● Upload your STEP, IGES, or SLDPRT file to receive a DFM review and quote within 24 hours.
● General tolerances ±0.05 mm; precision tolerances down to ±0.01 mm
● 50+ metals and plastics in stock with material certificates, applied for EU and U.S.A market
● No minimum order, 1~20pcs is possible. Prototype through serialized production
● Faster delivery time within 3~5 days for samples
What is the CNC Milling ?
CNC milling is an advanced subtractive manufacturing process that uses computer-controlled rotating cutting tools to precisely remove material from metal and plastic workpieces. By following programmed toolpaths generated from CAD models, CNC milling machines produce complex components with tight tolerances, excellent repeatability, and consistent quality.
Using multi-axis CNC milling technology, including 3-axis, 4-axis, and 5-axis machining, we manufacture precision parts such as brackets, housings, manifolds, enclosures, and custom mechanical components. Common milling operations include face milling for flat surfaces and peripheral milling for slots, pockets, threads, contours, and intricate geometries.
As part of our complete CNC machining services, CNC milling works alongside CNC turning and Swiss-type machining to provide a full range of manufacturing solutions. We machine 50+ metals and engineering plastics, including aluminum, stainless steel, titanium, brass, PEEK, and other high-performance materials.
With integrated in-house secondary processes such as deburring, anodizing, plating, and polishing, we maintain full control over quality, lead times, and production consistency. The same validated machining processes support both rapid prototypes and high-volume production, ensuring a seamless transition from product development to scalable manufacturing.
CNC Milling Manufacturing Capabilities
These specifications apply across our milling centers. Specific tolerances and part envelopes depend on material, geometry, and setup. Engineering review is available on request.
|
Feature |
Description |
|
Precision Tolerance |
±0.01 mm |
|
Standard Tolerance |
±0.05 mm |
|
Standard Lead Time |
10–15 days; as fast as 5 days for small orders |
|
Maximum Part Size |
Up to 3000 mm in length |
CNC Milling Materials
We machine & stock 50+ aluminum, steel, specialty metal and engineering plastic grades. All stock bars/plates come with mill certificates and full lot traceability. Our expert material selection service aligns with your project's load, operating environment, budget and compliance rules.
CNC Milling Surface Finishes
We apply surface finishes in-house to control quality and lead time. Each finish below improves the corrosion resistance, wear performance, and appearance of the machined part.
Ra 3.2 µm (125 µin), standard mill finish for non-cosmetic parts
Uniform matte/satin texture, Ra 1.6–6.3 µm
10–25 µm oxide layer on aluminum, multiple colors available
25–75 µm dense coating, up to 70 HRC, for aerospace/military
50–100 µm, wide color range, corrosion protection
Unidirectional satin grain, Ra 0.8–1.6 µm
High-gloss reflective, Ra 0.1–0.4 µm, for optical/medical parts
This surface treatment fits consumer electronics housings, automotive interior components, medical equipment casings, aerospace small structural parts, communication enclosures, household appliance accessories, precision instrument shells and cosmetic hardware parts. It covers aluminum, ABS, PC, POM, steel and alloy workpieces, ideal for parts exposed to air or daily wear requiring customized matte, glossy or textured color finishes.
Types of Milling Processes at Xinyeda Solution
We run production-grade CNC milling under one roof with vertical and horizontal machining centers plus in-house finishing. Below are the main process variants and the scenarios each is suited for.
Haas and DMG MORI vertical machining centers move the cutting tool along X, Y, and Z linear axes. Handles flat faces, pockets, slots, and simple 3D contours. The cost leader for 80% of machined parts. Typical spindle speeds 8,000 to 12,000 RPM on aluminum; work envelopes to 2,000 × 1,000 × 1,000 mm.
Adds an A-axis rotary table to the 3-axis platform, letting the cutter reach features on multiple sides in one setup. Reduces repositioning error for parts with holes, slots, or pockets on three or four faces. Standard on complex brackets, manifolds, and prismatic parts.
DMG MORI and Mazak 5-axis centers add B and C rotary axes, enabling continuous tool orientation changes during the cut. Used for turbine blades, aerospace impellers, medical implants, and complex geometries with undercuts that 3-axis cannot reach. Holds ±0.05 mm across multiple surfaces without refixturing.
Applications of CNC Milling
Airframe brackets, structural components, turbine blade roots, engine housings, and landing gear parts in aluminum 7075, titanium Ti6Al4V, and Inconel. AS9100-certified production with material traceability and FAI documentation.
Surgical instruments, orthopedic implants, diagnostic equipment housings, and dental components in 316L stainless steel, titanium, and PEEK. ISO 13485-certified with passivated surfaces and biocompatible materials.
Engine blocks, cylinder heads, transmission casings, suspension arms, and custom mechanical parts. IATF-compliant production with PPAP Level 3 documentation on request.
End-effector mounts, articulated joints, structural frames, and sensor housings in aluminum and PEEK for humanoid, mobile, and industrial robotics platforms.
Wellhead components, downhole tooling, valve bodies, and renewable energy brackets in duplex stainless steel, Inconel, and aluminum. Corrosion-resistant finishes for offshore and high-temperature applications.
Custom gears, shafts, bushings, pump housings, and tooling components for manufacturing, mining, and process equipment. Tool steels, cast iron, and hardened alloys handled routinely.
Heat sinks, device enclosures, connector housings, and PCB mounting brackets in anodized aluminum 6061. Tolerances to ±0.05 mm for snap-fit assemblies and thermal management.
High-strength steel and titanium components for defense-adjacent applications, including communications systems, UAV structures, and support equipment. MIL-SPEC compliance with full material traceability on request.
How CNC Milling Works
CNC milling is a computer-controlled machining process that converts a digital design into a precision-finished component by removing material from a solid workpiece. The machine uses rotating cutting tools that move along programmed axes to create complex features with high accuracy and repeatability.
CAD Design → CAM Programming → Machine Setup → CNC Milling → Inspection → Surface Finishing → Final Delivery
1. CAD Design & CNC Programming
The process begins with a 3D CAD model that defines the part geometry and dimensions. CAM software converts the CAD file into CNC programs (G-code), which control tool paths, cutting speeds, feed rates, and machining sequences.
Key steps:
Import CAD model (STEP, IGES, SLDPRT, etc.)
Analyze part geometry and manufacturability
Generate optimized toolpaths
Create CNC machining instructions
Why Choose Xinyeda Solution for CNC Milling
We manage full in-house CNC milling workflows: programming, machining, deburring, surface finishing and quality inspection. Our complete vertical manufacturing integration delivers faster lead times, uniform precision part quality, and direct factory pricing with zero middleman markups.
Our Certifications
FAQs of CNC Milling
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What materials can be CNC milled?
CNC milling can process a wide range of metals and engineering plastics, including:
● Aluminum (6061, 7075, etc.)
● Stainless steel
● Carbon steel
● Titanium
● Brass and copper alloys
● PEEK
● POM (Delrin)
● Nylon
● ABS and other engineering plastics
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What types of CNC milling machines are available?
CNC milling capabilities typically include:
● 3-axis CNC milling: Suitable for standard parts, brackets, plates, housings, and simple geometries.
● 4-axis CNC milling: Adds rotary machining capability for multi-sided components and improved setup efficiency.
● 5-axis CNC milling: Enables complex surface machining and multi-angle cutting for aerospace, medical, and high-precision applications.
-
What types of CNC milling machines are available?
CNC milling capabilities typically include:
● 3-axis CNC milling: Suitable for standard parts, brackets, plates, housings, and simple geometries.
● 4-axis CNC milling: Adds rotary machining capability for multi-sided components and improved setup efficiency.
● 5-axis CNC milling: Enables complex surface machining and multi-angle cutting for aerospace, medical, and high-precision applications.
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What is the maximum size of a CNC milled part?
The maximum machining size depends on the CNC machine configuration.
Typical capabilities:
● 3-axis CNC milling: Up to approximately 1000 × 600 × 600 mm
● 4-axis CNC milling: Suitable for larger rotary components depending on fixture size
● 5-axis CNC milling: Commonly used for complex parts within a 500 × 500 × 500 mm machining envelope
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What file formats are accepted for CNC milling?
Most CNC milling manufacturers accept common CAD formats, including:
● STEP (.step / .stp)
● IGES (.igs / .iges)
● SolidWorks (.sldprt)
● Parasolid (.x_t)
● AutoCAD DXF/DWG
● STL files for specific applications
STEP files are generally recommended for precision CNC machining.
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What surface finishes are available for CNC milled parts?
Common CNC milling surface finishes include:
● As-machined finish
● Bead blasting
● Sandblasting
● Anodizing
● Powder coating
● Electroplating
● Polishing
● Passivation
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What is the difference between CNC milling and CNC turning?
The main difference is the machining method:
CNC Milling
● Cutting tool rotates
● Workpiece remains fixed
● Ideal for complex shapes, pockets, slots, and flat surfaces
CNC Turning
● Workpiece rotates
● Cutting tool moves along the part
● Ideal for cylindrical components such as shafts, pins, and bushings
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How do I request a CNC milling quote?
To receive a CNC milling quote, provide:
● CAD files (STEP, IGES, SLDPRT, etc.)
● 2D drawings with tolerances
● Material requirements
● Required quantity
● Surface finish specifications
● Delivery requirements