Precision Machining Services | High-Precision Machining Solutions | Lingjun
Lingjun CNC provides trusted precision machining services and custom solutions Leverage our experienced engineers and true 5 axis capability for reliable, high specification components Start your project now
- Certifications: ISO 9001:2015 | ISO 13485:2016 | IATF16949
- Extremely Strict Tolerances, Averaging ±0.01mm.
- Choose From 100+ Materials, 60+ Surface Finishes.
- Lead Times as Short as 1 day.
- Supports Rapid Prototyping
- No Order Quantity Limit
- Prototypes, Small Batch CNC Machining, or Mass Production.
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What is Precision Machining
Many people are familiar with CNC machining, but precision machining might be a more perplexing concept. What is precision machining? The process seems similar to CNC machining, and that’s true. The difference lies not in the technology, but in the philosophy—when your project prioritizes part quality over production speed, precision machining is undoubtedly the best choice. This doesn’t mean CNC machining isn’t precise enough, but rather that it builds upon CNC machining with a steadfast commitment to controlling every variable affecting the final part’s geometry. For example：
If you want to manufacture phone cases, but you can’t simply require high-volume production in a short time, then CNC machining is suitable. However, if you need to manufacture optical components or other high-precision parts with tolerances consistently controlled within ±0.01mm, then precision machining comes into play.
In short, Lingjun’s precision CNC machining services help various industries achieve stringent tolerance control and high-precision machining, ensuring that every part functions perfectly in its specific application. These capabilities enable the manufacture of parts that are precisely suited to precision machinery and equipment, thus guaranteeing reliability and efficiency.
Whether for small-scale prototyping or mass production, we provide durable and reliable components. Lingjun is committed to providing comprehensive high-precision machining solutions to meet the diverse needs of customers across various industries.
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Simply upload your 3D model or 2D drawing to receive an instant quote, delivery timeline, and expert support. Rest assured, all your data and designs are kept safe and completely confidential.”
Our CNC Precision Machining Services
Achieve the perfect finish for your 5 axis CNC machining parts with our range of surface treatment options.
Precision CNC Milling Services
Only precision-machined parts with strict tolerances and precise dimensions can earn customer praise. Lingjun CNC's multi-axis machine tools ensure customized precision to meet your needs. Furthermore, our precision CNC milling services cover a wide range of materials.
Minimum part size: 1 mm × 1 mm
Maximum part size: 4000 mm × 1500 mm × 600 mm
Material compatibility: Metals and plastics
Machining methods: Face milling, contour milling, complex surface milling
Tolerance: ±0.01 mm
Precision CNC Turning Service
CNC turning is the ideal choice for producing cylindrical, conical, or disc-shaped components characterized by rotational symmetry. Generally, if a part features a circular cross-section, turning stands out as the most economical and efficient manufacturing process.
Material Compatibility: Metals, Plastics
Turning Operations: External Turning, Internal Turning, Facing Turning, Taper Turning, Boring, Drilling, Threading
Maximum Part Size: 200 mm × 500 mm
Minimum Feature Size: Φ 0.50 mm
Tolerance: ±0.01 mm
Axis: 2-axis, 3-axis, multi-axis rotation capability
Wire EDM Service
Wire EDM is an unconventional machining process that uses a thin conductive metal wire as an electrode to erode and cut conductive materials through spark discharge. Wire EDM is ideal for producing parts with extremely high precision, complex geometries, and hard or special materials.
Material Compatibility: Titanium, Tool Steels, Copper, Aluminum, and other metals
Maximum Part Size: 400 mm × 300 mm × 200 mm
Minimal Distortion: Low thermal impact
Complex Geometries:Suitable for intricate designs
Tolerance: ±0.01 mm or better (based on material and thickness)
Surface Finish: Ra 0.2 µm
Swiss Machining Services
Swiss Machining Services, also known as longitudinal lathe machining, is an ideal process designed specifically for producing extremely small, slender, and precision parts that require extremely high accuracy. Its unique advantage lies in its **Guide Bushing** design, which effectively eliminates skewing or vibration generated during the cutting process, ensuring unparalleled precision.
Accuracy: +/- 0.001mm
Concentricity: +/- 0.0001mm
Maximum Part Length: 203.2mm
Maximum Diameter: 31.75mm
Minimum Tolerance: 0.0127mm
Ultra Precision Machining Services
Redefining the Limits of Precision. Ultra-precision machining crafts complex components with sub-micron accuracy, delivering flawless surface integrity and reliability for mission-critical industries such as aerospace and medical.
Tolerance: Sub-micron (< 1 µm / 0.001 mm)
Surface Finish: Ra ≤ 0.05 µm
Minimum Feature Size: 10 µm (0.01 mm)
Material Scope: Advanced Metals, Engineering Plastics, Technical Ceramics
Micro Machining Services
When your vision demands a flawless, reflective surface on geometries that defy conventional machining, Mirror EDM is the definitive solution. This advanced process masters the most hardened alloys, capturing intricate contours and complex internal features with absolute fidelity.
Material Compatibility:SMetals, plastics
Surface Finish: Ra 0.05 µm or better
Dimensional Integrity: ± 0.00005 inches (0.0013 mm) or better (depending on material and thickness)
Work Envelope: Accommodates parts up to 16" x 12" x 8" (400x300x200mm).
Cutting Depth: Maximum processable thickness up to 10 inches (250 mm) (depending on material)
Lingjun CNC Precision Machining Services Tolerances & Design Guidelines
5 Aixs CNC Machining Design Guidelines
| Specification Category | Recommended/Achievable Standard | Rationale for Precision Machining |
| Minimum Feature Size | Width or Depth no less than 0.3 mm | Achievable using micro-tools; ensures robustness in high-precision micro-machining. |
| Linear Tolerance | Within $\pm0.002$ mm ($\pm0.00008$ inches) | Sets the standard for mission-critical components (e.g., aerospace, medical implants), utilizing thermal stability control. |
| Hole Diameter (Unreamed) | Diameters from 0.5 mm to 50 mm | Expanded range for micro-drilling and large-part adaptability while maintaining strict tolerances. |
| Shaft Diameter Range | Between 1 mm and 500 mm | Optimized range: starting smaller for micro-shafts and extending for heavy-duty industrial components. |
| Thread & Tapped Holes | Processable from M1.6 to M30 | Broader commercial range (from micro-threads M1.6 upwards) to meet diverse application requirements. Must ensure sufficient material relief at the thread bottom. |
| Engraved Text | Minimum Height: 1.0 mm Minimum Depth: 0.2 mm | Reduced dimensions for detailed cosmetic or part identification marking, maintaining clarity after processing. |
CNC Precision Machining Tolerances
| Description | |
|---|---|
| Maximum Part Size | 4000×1500×600 mm |
| Minimum Part Size | 5 x 5 x 5 mm |
| General Tolerances | Within ±0.002 mm |
| Lead Time | For standard operations, lead times can be as short as 2-3 days, while more complex projects might require up to 2 weeks. |
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CNC Precision Machining Materials
If you cannot find the materials you need, please contact info@lingjunth.com. We can procure them according to your project specifications.
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Available Varieties
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Aluminium
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Aluminum 6061, 6061-T6 Aluminum 2024 Aluminum 5052 Aluminum 5083
Aluminum 6063 Aluminum 6082 Aluminum 7075, 7075-T6 Aluminum ADC12 (A380)
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Brass
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Brass C27400 Brass C28000 Brass C36000
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Copper
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Copper C101(T2) Copper C103(T1) Copper C103(TU2) Copper C110(TU0)
Beryllium Copper
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Stainless steel
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Stainless Steel SUS201 Stainless Steel SUS303 Stainless Steel SUS 304 Stainless Steel SUS316 Stainless Steel SUS316L Stainless Steel SUS420 Stainless Steel SUS430 Stainless Steel SUS431 Stainless Steel SUS440C Stainless Steel SUS630/17-4PH Stainless Steel AISI 304 |
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Alloy Steel
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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 |
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Titanium
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Titanium Grade 2,Titanium 6Al-4V
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| Magnesium | Magnesium Alloy AZ31B Magnesium Alloy AZ91D |
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Plastics
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ABS, Acrylic, Nylon, PEEK,Polycarbonate, Polypropylene, Polyethylene
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Surface Finishes Options of CNC Precision Machining Services
Achieve the perfect finish for your CNC precision machining parts with our range of surface treatment options.
Anodized
This highly durable finish offers a broad spectrum of color dyes and adjustable luster, ranging from uniform matte to brilliant gloss. The achieved oxide film thickness is tightly controlled, typically ranging from 2 µm to 40 µm.
Polishing
Our Polished Finish achieves an exceptionally smooth, high-gloss surface. Engineered for optical reflectivity, it meets a strict surface roughness standard of Ra 0.8μm (Ra 32 micro-inches).
Bead Blasting
Applicable across diverse metallic and plastic substrates, this process yields a uniform satin finish and subdued luster. Crucially, it is non-destructive, guaranteeing dimensional integrity with negligible material removal.
Black Oxide
Black oxide is a chemical conversion coating applied to ferrous metals. It delivers a uniform, non-reflective matte black aesthetic while providing mild corrosion resistance and enhanced lubricity (often requiring a supplementary oil).
Powder Coating
Suitable for metal parts, this finish provides matte, glossy, or textured surface options in fully customizable colors. Typical material removal ranges from 0.05 mm to 0.15 mm, delivering a clean and uniform appearance.
As Machined
As Machined means maintaining the original surface condition after machining, without any additional treatment. At Lingjun, this is an optional surface treatment option for parts, to avoid any misunderstandings regarding surface treatment.
Brushing
Brushing is a fantastic and widely used surface treatment process. Precision brushing imparts a refined satin finish to components, producing a smooth, uniform surface while subtly masking minor surface imperfections.
Electroless Nickel Plating
The electroless nickel plating process deposits a consistent, dense coating on metal surfaces, delivering superior corrosion protection while enhancing hardness and wear resistance for extended service life.
Chromate Conversion Coating
The resulting surface exhibits either a smooth or matte appearance, sometimes displaying a subtle clear or pale yellow hue. During the process, an extremely fine layer—ranging from 0.25 to 1 micrometer—is precisely removed, ensuring a uniform and controlled finish across the part.
E-Coating
Designed specifically for metal components, this surface treatment is available in both matte and glossy options, with black being the predominant choice due to its versatility and aesthetic appeal.
Painting
This surface treatment is suitable for both metal and plastic components, offering a range of finishes including matte, gloss, or textured. Precise color matching can also be achieved to meet specific design requirements or brand standards.
Heat Treatment
Through precisely controlled cycles of heating and cooling, heat treatment significantly improves the mechanical properties of metal components, enhancing hardness, tensile strength, toughness, and wear resistance, while also optimizing microstructural characteristics for superior performance in demanding applications.
If you have more complex surface finishing requirements
Please contact the info@lingjunth.com
Advantages and Applications of CNC Precision Machining
1. Engineered Certainty, Not Just Tolerance: Higher accuracy ($\pm0.005$ mm).
Absolute Geometric Repeatability. We don’t just achieve a tolerance standard once; we meticulously engineer the process—utilizing thermal control and advanced metrology—to ensure that the 10,000th part is an exact, verifiable clone of the first.
This eliminates the unpredictable failure points that compromise high-volume production runs.Guaranteed Component Reliability in mission-critical applications (e.g., medical, aerospace).
2.Collapsing the Production Timeline: Reduced setup time (single-setup capability).Process Consolidation and Lead Time Compression. Lingjun utilizes true simultaneous 5-axis and Turn-Mill technology to consolidate up to five manual setup operations into a single, automated cycle. This does more than save time; it eliminates days or even weeks of queue time between secondary operations, drastically reducing your product’s time-to-market.Faster Validation and Scalability, providing a decisive advantage over competitors who rely on multi-step, multi-machine production flows.
3. Maximizing Material Yield (The Invisible Saving): Less material waste.Micro-Toolpath Optimization. Our expertise in high-precision programming minimizes tool pressure and thermal distortion, enabling us to machine expensive, exotic materials (e.g., titanium, Inconel) closer to their near-net shape without compromising structural integrity. This maximizes material yield, turning what was once expensive scrap into usable inventory.
- Aerospace Propulsion Systems: Turbine blades, impellers, combustion chamber components.
- High-Performance Automotive: Precision connecting rods, custom pistons, and fuel injection system nozzles for racing engines.
- Oil & Gas: Precision valves and connectors for deep-sea submersibles.
- Medical Implants: Orthopedic screws, bone plates, dental implants (typically made of titanium alloys).
- Surgical Instruments: Miniature tools with complex geometries and perfect surface finishes.
- Diagnostic Equipment: Precision microfluidic chambers for fluid analyzers.
- Optics & Optoelectronics: Precision bases for optical components, fiber optic connectors, and sensor housings.
- Semiconductor Manufacturing: High-precision fixtures, test probes, and critical components for wafer processing equipment.
- Advanced Electronic Devices: Complex housings and internal components requiring thin walls and extremely tight tolerances.
FAQs of 5 Axis CNC Machining
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CNC Machining Resources
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