Precision Machining Services
Get high-quality precision CNC machined parts with tolerances as tight as 0.01mm. Parts can be delivered in as little as 1 day, ensuring quick turnaround times.
Bring your product ideas to life quickly and accurately with our expert prototyping services.
What is Precision CNC Machining?
Precision CNC machining uses advanced technology to produce highly accurate parts required in industries such as aerospace, medical devices, and electronics. This process ensures that every component meets exact specifications for size, shape, and function. CNC precision machining is essential for creating detailed and complex designs that standard machining methods cannot achieve, producing high-quality parts like gears, brackets, and enclosures.
Our capabilities enable the production of parts that fit precisely within advanced machinery and devices, guaranteeing reliability and efficiency. Whether for small prototypes or large-scale production, we provide durable, dependable components tailored to meet the unique needs of our clients.
CNC Machining Solutions
Wire EDM Service
Lewei Precision’s wire EDM service, part of our CNC offerings, efficiently produces both simple and complex shapes with exceptional precision. This no-contact method minimizes burrs and is ideal for metals such as steel and titanium. Widely used in industries like aerospace, automotive, and electronics, our wire EDM service ensures tailored solutions that meet your exact specifications.
Capability
Details/Specifications
Material Compatibility
Stainless Steel, Titanium, Aluminum, Tool Steel, Copper
Tolerance
± 0.0001 inches (0.0025 mm) or better (based on material and thickness)
Maximum Workpiece Size
Length: 16 inches (400 mm)
Width: 12 inches (300 mm)
Height: 8 inches (200 mm)
Cutting Speed
Up to 300 mm2/min (specific to material and thickness)
Surface Finish
As fine as Ra 0.2 µm
Maximum Cutting Thickness
Up to 12 inches (300 mm) – varies based on material
Wire Diameter Range
0.004 inches (0.1 mm) to 0.012 inches (0.3 mm)
CNC Milling Service
Lewei Precision’s multi-axis milling machines deliver CNC parts with tight tolerances and precise dimensions. Our technology ensures precision tailored to your specific needs, making it ideal for prototypes and new product development. Compatible with a wide range of materials, including metals and composites, our CNC milling services offer high efficiency, with parts ready quickly.
Capability
Details/Specifications
Material Compatibility
Stainless Steel, Titanium, Aluminum, Tool Steel, Copper
Tolerance
± 0.0001 inches (0.0025 mm) or better (based on material and thickness)
Surface Finish
As fine as Ra 0.2 µm
Maximum Workpiece Size
X: 40 inches (1016 mm) <br> Y: 20 inches (508 mm) <br> Z: 25 inches (635 mm) or machine-specific
Axis
2-axis, 3-axis, and multi-axis turning capabilities
Bar Feeding Diameter
Up to 3 inches (76 mm) or machine-specific
Mirror EDM Service
Lewei Precision’s Mirror EDM service produces mirror-reflective parts with exceptional precision. Ideal for creating intricate shapes with tight tolerances, it excels with hard materials that are difficult to machine using conventional tools. Serving industries from aerospace to electronics, our Mirror EDM ensures unmatched accuracy, capturing fine contours and complex geometries consistently.
Capability
Details/Specifications
Material Compatibility
Stainless Steel, Titanium, Aluminum, Tool Steel, Copper
Tolerance
± 0.00005 inches (0.0013 mm) or better (based on material and thickness)
Maximum Workpiece Size
Length: 16 inches (400 mm)
Width: 12 inches (300 mm)
Height: 8 inches (200 mm)
Maximum Cutting Thickness
Up to 10 inches (250 mm) – varies by material
CNC Turning Service
Lewei Precision’s advanced CNC turning services provide exceptional accuracy and repeatability for both machine parts and prototypes. Our diverse range of turning centers caters to a wide variety of applications, ensuring consistent precision across multiple batches. With minimized errors, we offer faster production without compromising quality. Trust our skilled technicians and top-of-the-line CNC machines for outstanding component craftsmanship.
Capability
Details/Specifications
Material Compatibility
Stainless Steel, Titanium, Aluminum, Tool Steel, Copper
Tolerance
± 0.0005 inches (0.0127 mm) or better (dependent on material and operation)
Maximum Workpiece Size
60 inches (1524 mm) or machine-specific capability
Bar Feeding Diameter
Up to 3 inches (76 mm) or machine-specific
Maximum Workpiece Diameter
0 inches (508 mm) or machine-specific capability
Axis
2-axis, 3-axis, and multi-axis turning capabilities
Grinding Service
Lewei Precision’s advanced manufacturing facility is equipped with high-precision grinding machines, ideal for producing metal parts with tight tolerances. Our versatile grinding capabilities cater to both small components and complex geometries. With precision wheels ensuring controlled material removal, we provide polished finishes that minimize costs, wear, and errors. Trust our skilled team to recommend the perfect grinding solution for your project.
Capability
Details/Specifications
Material Compatibility
Stainless Steel, Aluminum, Tool Steel, Copper, Ceramics, Carbides
Grinding Methods
Surface Grinding, Cylindrical Grinding, Centerless Grinding, Internal Grinding
Cutting Speed
Up to 300 mm2/min (specific to material and thickness)
Surface Finish
Achievable down to Ra 0.1 µm or better (dependent on material and grinding method)
Maximum Workpiece Size
Length: 24 inches (600 mm) <br> Width: 10 inches (250 mm) <br> Diameter: 8 inches (200 mm) for cylindrical grinding
Surface Finish
Achievable down to Ra 0.1 µm or better (dependent on material and grinding method)
Lewei Precision
___CNC Machining Solutions
Rapid Prototyping
Harness our advanced manufacturing capabilities for fast, high-quality prototype delivery. With cutting-edge technology, we ensure quick and accurate production, speeding up your journey from testing to market readiness.
Low and High-Volume Production
Lewei Precision is fully equipped to handle large-scale production orders, ensuring the efficient production of high volumes of CNC precision machined parts without sacrificing quality or accuracy.
Capacity: 1000+
Lead Time: 15 business days
Typical Tolerance (mm) | Best Possible Tolerance (mm) | Notes
| Feature | Description |
|---|---|
| General Tolerances | Metals: ISO 2768-m Plastics: ISO 2768-c |
| Precision Tolerances | Tolerances tighter than ±0.001 inches, as per drawing & GD&T |
| Min Wall Thickness | 0.5 mm |
| Min End Mill Size | 0.5 mm |
| Min 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 (most projects) As fast as 1 day (simple parts) |
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.
Materials & Surface Finishes
Lewei Precision offers a diverse selection of materials, including metals, plastics, and composites, to meet the specific needs of your projects.
We provide high-quality surface finishes that improve part durability and appearance, catering to applications that require either smooth or textured surfaces.
Advantages
Applications of Precision Machining
Precision CNC machining services are essential in various industries for creating specialized parts, including:
- Engine Components: Crucial for automotive and aerospace engines, components like pistons and crankshafts require exact dimensions for optimal performance and durability.
- Medical Implants:Used to manufacture surgical implants, including hip and knee replacements, where precise tolerances and smooth finishes are necessary for compatibility with human tissue.
- Aerospace Fasteners:Involves the production of high-strength bolts and screws, designed to withstand extreme conditions in aerospace applications while maintaining reliability.
- Complex Geometries: With advanced CNC machines, manufacturers can create complex shapes that would be difficult or impossible to achieve through manual processes. This capability is vital for developing innovative products and components.
- Tool and Die Making: Focuses on creating molds and dies essential for mass production, ensuring consistency and high-quality parts in manufacturing processes across industries.
Applications
Advantages of Precision Machining
Precision machining offers numerous advantages by producing parts with exceptional accuracy and efficiency.
- High Accuracy: Precision machining tools can produce parts with extremely tight tolerances, ensuring that each component meets exact specifications. This is essential for applications that require intricate details, such as in aerospace and medical devices.
- Consistency: This method guarantees unmatched consistency throughout production, with each part remaining identical even in large volumes. This minimizes the risk of errors and defects in the final product.
- Material Versatility:Precision machining is compatible with a wide variety of materials, from metals to plastics and composites. This versatility enables manufacturers to select the best material for specific attributes like strength, weight, and resistance.
- Complex Geometries:Advanced CNC machines allow the creation of complex shapes that would be challenging or impossible with manual processes. This capability is crucial for developing innovative products and intricate components.
- Reduced Waste: Due to its accuracy, precision machining minimizes material wastage, saving raw materials and reducing the environmental impact of manufacturing.
CNC Machining FAQs
What is precision machining and when is it required?
Precision machining is a CNC manufacturing process that produces parts with tolerances tighter than ±0.01mm and superior surface finishes. It is required when parts must mate perfectly, withstand extreme conditions, or function in critical assemblies — such as medical implants, aerospace fittings, optical components, and semiconductor parts.
What tolerances can Lewei Precision achieve with precision machining?
Our precision machining services hold tolerances down to ±0.002mm (±0.00008 inch) on critical features, with surface finishes as fine as Ra 0.2 µm. We use 5-axis machines, jig grinders, and CMM verification to consistently achieve micron-level accuracy.
Which industries rely on Lewei’s precision machining services?
Aerospace, medical devices, semiconductor, optical, robotics, automotive performance, and defense industries rely on our precision machining for parts that demand consistent quality and traceability. Our ISO 9001 and ISO 13485 certifications support these regulated applications.
How does Lewei Precision verify accuracy on precision machined parts?
Every precision machined part is inspected with calibrated coordinate measuring machines (CMMs), optical comparators, profilometers, and air gauges. We provide First Article Inspection (FAI) reports, dimensional reports, and material certificates for full traceability.
What materials are commonly used for precision machined components?
Stainless steel 17-4 PH and 316L, titanium Grade 5, Inconel 718, aluminum 7075, tool steels, brass, copper, ceramic-grade plastics like PEEK and Vespel, and engineering plastics are all routinely used. Material selection depends on strength, corrosion, and dimensional stability requirements.
Can precision machining be combined with surface treatments for finished parts?
Yes. We pair precision machining with hard anodizing, passivation, electropolishing, PVD coating, nickel plating, and black oxide finishing to deliver fully finished parts. All treatments are performed under controlled processes to maintain dimensional accuracy after finishing.
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