Custom Online CNC Machining Services
Efficient CNC machining services for both metal and plastic parts, tailored to your project requirements.
Whether it’s a single prototype or large-scale production, we ensure precision and timely delivery.
- Tolerance down to 0.001 inches
- Choose from 100+ materials, 20+ surface finishes.
- ISO 9001:2015, ISO 13485, ISO14001:2015, IATF 16949:2016 certified.
- Lead times as short as 1 day.
Bring your product ideas to life quickly and accurately with our expert prototyping services.
CNC Machining Services for Custom Parts
Lewei Precision is your trusted partner for high-quality prototypes and custom machined parts, whether simple or complex. With over 700 CNC machines in-house, we offer milling, turning, routing, EDM machining, drilling, and precision grinding services.ject.
With over 200 milling centers, including 3-axis, 4-axis, and advanced 5-axis CNC mills, Lewei Precision efficiently handles tight-tolerance parts and complex geometries in both plastic and metal. We serve various industries and specialize in mold making.
A Strong Network of CNC Machine
Lewei Precision operates a dedicated CNC machine shop and partners with a vast network of facilities across China. Our capabilities extend beyond standard CNC machines, with grinders for smooth finishes, wire cutters for precision, and EDM machines for complex shapes. This variety allows us to handle intricate designs and produce CNC-machined parts that meet exact specifications, all while maintaining tolerances as tight as 0.01mm for flawless integration into larger assemblies.
In addition, we utilize automated production lines where machines work together seamlessly, ensuring high-volume production with minimal errors. This efficient system helps keep projects on schedule while delivering consistent results and maintaining the highest quality standards.
CNC Machining Materials
As machined, Anodizing, Powder coating, Electroplating, Painting, Sand blasting, Polishing
Copper is highly conductive and malleable, making it a top choice for electrical wiring and plumbing. Its natural antibacterial properties also make it ideal for medical applications, while its aesthetic appeal suits decorative items and artwork.
Red-orange
Copper C101(T2), Copper C103(T1), Copper C103(TU2), Copper C110(TU0), Beryllium Copper
As machined, Polishing, Sand blasting, Tumbling, Electropolish, Alodine, Heat treatment, Black oxidize, Electroless nickel, Chrome plating, Brushed finish
$$$
About 5 business days
Bronze, an alloy of copper and tin, is known for its durability and resistance to corrosion. It’s widely used in marine applications, sculptures, and bearings, thanks to its strength and ability to withstand harsh environments.
Metallic brown
Tin Bronze
As machined, Polishing, Sand blasting, Tumbling, Electropolish, Alodine, Heat treatment, Black oxidize, Electroless nickle, Chrome plating, Powder coating, Brushed finish
About 5 business days
Steel is a strong and versatile material, widely used in construction and manufacturing. Its high tensile strength makes it suitable for structural components, while various Subtypes enhance its properties for specialized applications, like tools and machinery.
Silver Grey
Steel 1018, 1020, 1025, 1045, 1215, 4130, 4140, 4340, 5140, A36, Die steel, Alloy steel, Chisel tool steel, Spring steel, High speed steel, Cold rolled steel, Bearing steel, SPCC
As machined, Electroplating, Passivation, Powder coating
About 7 business days
Stainless steel is resistant to rust and staining, making it perfect for kitchen appliances and medical equipment. Its strength and aesthetic appeal also make it a popular choice for architectural designs and automotive parts.
Silver Grey
Stainless Steel SUS201, SUS303, SUS 304, SUS316, SUS316L, SUS42, SUS430, SUS431, SUS440C, SUS630/17-4PH, AISI 304
As machined, Electroplating, Passivation, Powder coating
ABout 7 business days
Magnesium is lightweight yet strong, often used in aerospace and automotive applications where reducing weight is critical. Its machinability allows for complex shapes, and it’s also utilized in various electronic devices for its excellent conductivity.
White-silver
Magnesium Alloy AZ31B, AZ91D
As machined, Polishing, Sand Blasting, Tumbling, Alodine, Heat treatment, Anodizing, Teflon coating, Electroless nickel, Painting, Powder coating, Electrophoresis
ABout 8 business days
Titanium is incredibly strong and lightweight, making it ideal for aerospace and medical implants. Its resistance to corrosion and biocompatibility enhance its use in demanding environments, while its high strength-to-weight ratio suits various industrial applications.
Titanium Alloy TA1, Alloy TA2, Alloy TC4/Ti-6Al 4V
As machined, Polishing, Sand Blasting, Tumbling, Electropolish, Alodine, Anodizing, Electroless nickel, Painting, Powder coating, Brushed finish
ABout 8 business days
CNC Machining Surface Finishes
Lewei Precision offers a wide range of surface finishing solutions tailored to enhance the performance, durability, and appearance of parts produced through our 3-axis and 4-axis CNC machining services.
Tolerances for CNC Machining
Lewei Precision’s CNC machines are designed to achieve precise tolerances that adhere to industry standards, guaranteeing consistent accuracy and perfect fit for every part in your assembly.
Features | Description |
General Tolerances | Metals: ISO 2768-m Plastics: ISO 2768-c |
Precision Tolerances | Tolerances tighter than +/- 0.001 inches per drawing specifications and GD&T annotations. |
Minimum Wall Thickness | 0.5 mm |
Minimum End Mill Size | 0.5 mm |
Minimum Drill Size | 1 mm |
Maximum Part Size | CNC Milling: 4000×1500×600 mm CNC Turning: 200×500 mm |
Minimum Part Size | CNC Milling: 5×5×5 mm CNC Turning: 2×2 mm |
Production Volume | Prototyping: 1-100 pcs Low Volume: 101-10,000 pcs High Volume: Above 10,001 pcs |
Lead Time | 5 business days for most projects. Delivery of simple parts can be as fast as 1 day. |
Design Guidelines for CNC Machining
Optimize your designs for manufacturability with our expert guidelines. Lewei Precision provides valuable feedback on your custom machined parts to ensure the best results in CNC machining.
Features | Description |
Radii | Sharp internal corners form rounded radii. Depth: ≤ 12 times the drill diameter for drills. Depth: ≤ 10 times the tool diameter for end mills. |
Threads and Tapped Holes | For diameters Φ 1.5-5 mm, depth should be 3 times the diameter. For diameters Φ 5 mm or larger, depth should be 4-6 times the diameter. Threads of any specification and size can be produced as per customer requirements. |
Undercuts | Achievable with square profiles, full radius, and dovetail profiles through precise machining. |
Text | CNC Milling: Minimum width of 0.5 mm and depth of 0.1 mm. CNC Turning: Laser marking or CNC engraving/laser engraving available for standard text, per customer specifications. |
Lewei Precision Solutions
Whether you’re creating a small batch of custom parts or scaling up for high-volume production, Lewei Precision services offer the flexibility you need.
Precision CNC Machining with Consistent Quality
At Lewei Precision, we recognize that producing high-quality parts is essential for your success. Our CNC machining experts are committed to delivering precision, efficiency, and consistent quality throughout the production process. We maintain a comprehensive quality control system for all stages of CNC machining, ensuring that whether your project involves simple or complex components, it meets the highest standards.
Every part undergoes rigorous inspection using advanced tools such as CMM, XRF analyzers, gauges, micrometers, and calipers. Our team ensures dimensional accuracy and functionality by inspecting both prototypes and final products.
With years of experience and ISO 9001 certification, Lewei Precision consistently meets the stringent standards required in today’s competitive manufacturing environment.
Lewei Precision CNC Machining Solutions
Whether you’re producing a small batch of custom parts or scaling up for large-volume production, Lewei Precision’s custom CNC machining services provide the flexibility you require.
CNC rapid prototyping is ideal for producing engineering or production prototypes that closely match the final product. We provide instant quotes and fast delivery, ensuring you receive precise, high-quality CNC machined prototypes.
- Lead Time: 1-5 business days
- Capability: 1-100 pcs
- Get 20% off the price
Low volume CNC machining serves as a key step between prototyping and mass production for emerging products. At Lewei Precision, this process is streamlined, efficient, and cost-effective, enabling you to scale production swiftly while maintaining exceptional quality standards.
- Lead Time: 5-15 business days
- Capability: 101-10,000 pcs
- Meet tight specifications
CNC production machining is the optimal solution for efficiently producing thousands of parts. With a broad selection of materials, advanced automation, and multi-axis capabilities, Lewei Precision delivers high-volume production with tight tolerances, excellent dimensional accuracy, reliability, and quick turnaround times.
- Lead Time: 2-4 weeks
- Capability: Above 10,001 pcs
- Consistent Quality
Start Your CNC Machining Project
CNC Machining for Various Industries
From automotive to aerospace, Lewei Precision’s CNC machining services cater to the specific needs of a wide range of industries. We collaborate with independent inventors, designers, and large-scale companies, serving over 20,000 customers globally.
Success Stories of
Lewei Precision x Rennteam Stuttgart: Innovation Collaboration of Racecar Engineering
Lewei Precision proudly supports Rennteam Stuttgart by manufacturing 2 mainbar components and over 80 Aluminum inserts. Our precision engineering ensures they’re ready to conquer the Formula Student competitions, giving the team a winning edge.
Case Study: LURA’s Partnership with Lewei Precision for Precision Rocket Engine Parts
LURA, the Leeds University Rocket Association, used Lewei Precision’s 5-axis CNC machining and turn-mill compounding techniques to create intricate engine parts essential for their victory in the National Race to Space Propulsion Competition.
Case Study: Andrea Piccino Collaborates with Lewei Precision to Bring the “Iron Man Suit” to Live
Andrea, a dedicated mechanical engineer from Italy, utilized Lewei Precision 5-axis CNC machining to produce a full-body passive exoskeleton that boosts human strength and minimizes physical strain.
Case Study: Lewei Precision Powers Arco Aria’s Tether Car Success
Thanks to Lewei persicion, Arco successfully modified his tether car’s engine, including turning the crankshaft and designing a new intake system for improved efficiency.
Why Choose Us
High Quality Parts
Lewei Precision’s ISO-certified CNC machining guarantees exceptional precision and quality. Each part is crafted to fit perfectly and perform seamlessly, with stringent quality control applied throughout every stage of production.
Keep your projects on track with Lewei Precision. Our local workshops and cutting-edge equipment ensure fast turnarounds, helping you meet critical deadlines.
Rely on Lewei Precision for your CNC machining needs, anytime and anywhere. Our experts offer comprehensive support to optimize design efficiency and ensure the highest quality.
CNC Machining FAQs
What types of materials can Lewei Precision machine?
We work with a wide range of materials, including metals like aluminum, stainless steel, titanium, copper, and brass, as well as engineering plastics, composites, and specialty alloys. This flexibility allows us to support projects with diverse performance requirements, from lightweight prototypes to heavy-duty industrial parts.
How precise are the parts produced by Lewei Precision's CNC machining services?
Our CNC machining capabilities achieve tight tolerances down to ±0.001 inches (±0.025 mm). This level of precision makes our services suitable for industries such as aerospace, medical, and automotive, where accuracy and reliability are critical.
