Precision CNC Machining for Complex Metal Parts & Enclosures
High Accuracy ±0.01mm | Fast Prototyping | Low Volume to Mass Production
We provide reliable CNC machining services for global clients, specializing in medical components, industrial parts, and custom enclosures. From prototype to full production, we ensure precision, quality, and fast delivery.
Our CNC Machining Capabilities
ZhongRongDa offers comprehensive CNC machining services, including 3-axis, 4-axis, and 5-axis milling and turning. We specialize in producing complex, high-precision components for regulated industries, with a focus on:
- Medical device structural components and diagnostic equipment casings
- Aerospace-grade aluminum and titanium components
- Industrial automation and robotic mechanical components
- Customized small-batch production and rapid prototyping
- Fast delivery (3-7 days)
- global shipping
- Support OEM and ODM
Our advanced equipment and experienced engineering team ensure consistent product quality, with tolerance control as tight as ±0.005 millimeters.
CNC Machining
High-precision CNC machining services for complex parts, supporting a wide range of metal and plastic materials.
CNC Milling
3/4/5-axis milling capabilities for high-tolerance, complex geometries in aerospace and medical applications.
CNC Turning
Precision turning for cylindrical parts, with tight tolerances and smooth surface finishes.
Precision Machining
Tolerance control as low as ±0.005mm for medical and industrial-grade critical components.
Prototyping & CNC Machining
Fast-turnaround prototyping services to validate your design before mass production.
5-Axis CNC Machining
Advanced 5-axis machining for complex, multi-sided parts with reduced set-up time and higher accuracy.
Advanced Machining Facility
To meet the stringent demands of the medical and aesthetic device industries, we heavily invest in state-of-the-art machining technology. Our facility is equipped with dozens of multi-axis CNC centers, ensuring we can handle complex geometries, tight tolerances, and scalable production runs without compromising on speed or precision.
| Equipment Type | Quantity | Machining Range (mm) | Tolerance / Accuracy |
| 5-Axis CNC Machining Center | 1 | 419 x 359 | $\pm 0.01$ mm |
| 4-Axis CNC Machining Center | 6 | 419 x 315 | $\pm 0.01$ mm |
| 3-Axis CNC Machining Center | 11 | 699 x 490 | $\pm 0.01$ mm |
| CNC Lathe (Turning Center) | 3 | 0 – 3000 r/min | $\pm 0.01$ mm |
| Wire EDM | 4 | 350 x 450 | High-precision cutting |
| Precision Auxiliary (Grinding/Polishing) | 3 | Various | Tool & surface finishing |
Rigorous Quality Control & Inspection
Precision machining is nothing without precise verification. We operate an independent, temperature-controlled QC lab equipped with world-class metrology equipment. From First Article Inspection (FAI) to final delivery, every critical dimension is verified using our Hexagon CMM and a comprehensive suite of precision gauges.
| Inspection Equipment | Measurement Range | Resolution / Accuracy | Brand & Notes |
| Coordinate Measuring Machine (CMM) | 700 x 1000 x 700 mm | 0.005 mm | Hexagon GLOBAL (Industry Standard) |
| Precision Height Gauge | 750 mm | 0.0025 mm | Swiss Brand |
| Optical Projector | 400 x 500 mm | 0.01 mm | Precision optical measurement |
| Surface Roughness Tester | – | 0.002 mm | Ensures flawless surface finishes |
| Comprehensive Gauge Sets | Various | Down to 0.001 mm | Calipers, Micrometers, Pin/Block Gauges, Thread Gauges |
Precision CNC Machining Tolerances & Capabilities
For both metal and plastic CNC machined parts, ZhongRongDa ensures every component is manufactured to your exact specifications, meeting the strict standards of medical, aerospace, and industrial applications.
| Specification | Capability |
|---|---|
| Maximum Part Size | Milling: 4000 mm × 1500 mm × 600 mm Turning: 200 mm × 500 mm |
| Minimum Part Size | 1 mm × 1 mm |
| Minimum Feature Size | Φ 0.50 mm |
| Linear Dimension Tolerance | ±0.025 mm |
| High Precision Tolerance | ±0.01 mm |
| Shaft Diameter Tolerance | ±0.025 mm |
| Minimum Wall Thickness | 0.5 mm |
| Minimum End Mill Size | 0.5 mm |
| Minimum Drill Hole Size | 1 mm |
Materials that Zhongrongda can process
We work with a wide range of metal alloys and engineering plastics to meet the strict requirements of medical, automation, aerospace and precision equipment applications. All materials are machined to tight tolerances with consistent quality and reliable performance.
Aluminum
Description:
Lightweight, high-strength aluminum alloys with medical-grade anodizing options, widely used for large medical equipment enclosures and structural components.
Key Features:
Lightweight, high rigidity, corrosion-resistant, easy to machine
Applications:
CT/MRI machine housings, portable medical devices, equipment frames
304/316L Stainless Steel
Description:
304/316L stainless steel offers excellent corrosion resistance, biocompatibility, and sterilization compatibility, ideal for medical equipment housings and structural parts.
Key Features:
Corrosion-resistant, autoclave-safe, food/medical-grade, high strength
Typical Applications::
Surgical instruments, medical equipment frames, sterilizable housings
Brass
Description:
Brass is easy to machine and offers a smooth surface finish, making it ideal for precision parts and decorative components.
Key Features:
Excellent machinability, corrosion resistance, good appearance
Typical Applications::
Fittings, valves, decorative parts
ABS (Medical Grade)
Description:
Non-toxic, impact-resistant medical-grade ABS, ideal for device housings requiring sterilization compatibility and easy cleaning.
Key Features:
Biocompatible, impact-resistant, easy to disinfect, moldable
Typical Applications::
Medical checkup machine enclosures, diagnostic device housings
Nylon (PA)
Description:
Nylon is a durable engineering plastic with excellent wear resistance and self-lubricating properties.
Key Features:
Wear resistant, flexible, low friction
Typical Applications::
Mechanical parts, gears, bearings
PMMA (Acrylic)
Description:
PMMA provides excellent optical clarity and a smooth surface finish, making it suitable for display and aesthetic applications.
Key Features:
High transparency, good surface finish
Typical Applications::
Displays, lenses, covers
PEEK (Medical Grade)
Description:
High-performance, biocompatible thermoplastic with excellent heat and chemical resistance, used for implantable and reusable medical components.
Key Features:
Implant-grade, sterilizable (autoclave/EtO), chemical-resistant, high strength
Typical Applications::
Applications: Surgical tool components, implantable parts, high-temperature medical devices
Titanium Alloy (Ti-6Al-4V)
Description:
Biocompatible, lightweight titanium alloy with exceptional strength and corrosion resistance, ideal for high-performance medical devices.
Key Features:
Biocompatible, lightweight, corrosion-resistant, high strength-to-weight ratio
Typical Applications::
Applications: Orthopedic implants, surgical instruments, aerospace-grade medical components
PC (Medical Grade)
Description:
Transparent, impact-resistant medical-grade PC, perfect for device view windows, protective covers, and housings requiring high clarity.
Key Features:
Impact-resistant, transparent, sterilizable, biocompatible
Typical Applications:
Medical equipment view windows, protective shields, diagnostic device enclosures
We can help you select the most suitable material based on your application and cost requirements.
Surface Treatment Services
Medical-Grade Anodizing
Improves corrosion resistance, creates a durable, clean finish, and is compatible with repeated disinfection for aluminum medical parts.
Bead Blasting
Produces a uniform matte texture, removes surface imperfections, and prepares parts for subsequent coatings.
Medical-Grade Powder Coating
Adds a strong, wear-resistant, and disinfection-compatible layer with customizable colors for medical equipment enclosures.
Polishing / Electropolishing
Smooth mirror or electropolished finishes reduce bacteria adhesion, enhance corrosion resistance, and meet the strict hygiene requirements of surgical and medical-grade components.
Plating (Nickel / Chrome)
Corrosion-resistant plating provides protection and aesthetic appeal, suitable for both industrial parts and non-invasive medical equipment components.
Passivation
Enhances corrosion resistance and removes contaminants from stainless steel surfaces, meeting strict medical hygiene standards for surgical and reusable components.
Sandblasting
Creates a controlled rough or textured surface, improves coating adhesion, and provides a uniform finish for both metal and plastic parts.
PTFE (Teflon) Coating
Low-friction, non-stick, and biocompatible coating, ideal for moving parts, medical instruments, and equipment requiring easy cleaning.
Get Started Today!
Don’t wait to bring your ideas to life. Contact ZhongRongDa now and let our expert team help you launch your products faster, with top-quality results and significant cost savings.
Need Assistance? We're Here for You.
If you have any questions or need assistance, our team is ready to provide support 24/7. Reach out to us through any of the methods below.
FAQ
What is your typical lead time?
Answer：
Lead time depends on part complexity and quantity. Most prototypes can be completed within 2–5 days, while low-volume production typically takes 1–3 weeks.
What file formats do you accept?
Answer：
We accept STEP, STP, IGES, STL, and PDF drawings. If you’re unsure, simply send what you have — our engineers will review and assist you.
Do you have a minimum order quantity (MOQ)?
Answer：
No, we support everything from single prototypes to small batch production, giving you maximum flexibility.
Can you handle large-size parts or enclosures?
Answer：
Yes, we specialize in manufacturing large and complex enclosures without strict size limitations, making us ideal for projects that cannot use traditional molding.
What materials can you machine?
Answer：
We work with a wide range of materials including aluminum, stainless steel, brass, copper, and engineering plastics such as ABS, POM, and nylon.
What surface finishing options do you offer?
Answer：
We provide various finishing options including anodizing, bead blasting, powder coating, polishing, plating, and more to meet both functional and aesthetic requirements.
How do you ensure quality?
Answer：
Every part goes through strict quality inspection, including dimensional checks and surface inspection, to ensure it meets your specifications.
Can you help optimize my design?
Answer：
Yes, our engineering team can provide design suggestions to improve manufacturability, reduce cost, and shorten production time.
Do you support international shipping?
Answer：
Yes, we ship globally and work with reliable logistics partners to ensure safe and timely delivery.
How can I get a quote?
Answer：
Simply send us your drawings or project details, and we will provide a quotation within 24 hours.
Gallery of Custom CNC Machined Parts
Following shows the custom CNC machining prototypes and end-use parts we produce for our customers.
Industries We Serve
We provide high-precision CNC machining solutions for industries where accuracy, reliability, and compliance are critical. From medical systems to aerospace and defense, our team understands strict technical requirements and delivers consistent, production-ready components.
We manufacture precision CNC components and custom enclosures for medical devices and laboratory systems, ensuring reliability, cleanliness, and tight tolerances.
Defense & Military
Mission-ready manufacturing. We supply robust, highly reliable, and precision-machined tactical components engineered to withstand extreme field environments.
Aerospace & Defense
We produce high-tolerance CNC parts for aerospace, aviation, and defense applications, delivering robust components with consistent performance in demanding environments.
Robotics & Automation
e supply structural parts, housings and precision components for medical robots, industrial robots and automated equipment.
