Custom CNC Machining Services
ZH Precision provides custom CNC machining services for parts produced according to customer drawings and technical requirements. Using CNC milling, CNC turning, and multi-axis machining, we manufacture components in specified materials to support diverse engineering and manufacturing applications.
- Competitive Prices & DFM
- 24/7 Engineering Support
- Quick Turn, Short Lead Time, not MOQ
Verify Certifications On Demand：ISO 9001:2015 | IATF 16949:2016
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Chinese CNC Machined Parts Manufacturer，Factory Direct Prices
ZH Precision is a CNC machining manufacturer in China serving global customers across Europe and North America, equipped with 30+ 3/4/5-axis and horizontal machining centers. We specialize in custom metal parts and high-precision components for industrial applications, delivering stable quality, tight tolerances, and fast lead times worldwide.
Engineering-Driven CNC Machining Capabilities
Backed by expert engineering and advanced machining equipment, ZH Precision delivers tightly-toleranced precision parts for complex industrial applications. We prioritize design-for-manufacturability, process stability, and reliable lead times, with most orders delivered to North America and Europe within 5–10 business days.
Custom CNC Milling Services
Versatile CNC milling delivers tailored metal parts in various sizes and forms, with efficient multi-surface processing to meet your exact project specifications.
Custom CNC Turning Services
Precision CNC turning produces consistently accurate metal components, supporting small to medium batches for both prototyping and full production runs.
One-Stop CNC Machining Parts Supplier
ZH Precision provides comprehensive CNC machining solutions for diverse custom manufacturing demands. Supported by flexible production workflows, strict quality control and efficient lead time management, we deliver high-precision, consistent machined components from prototype development to mass production.
Rapid Prototyping
We provide fast CNC machined prototype services with short lead times to speed up your product iteration. Our prototypes support reliable design validation and functional performance testing for new product development.
Learn MoreLow and High-Volume Production
We provide CNC machining services covering small-batch and mass manufacturing with standardized process control. Our mature production system maintains steady quality and punctual delivery regardless of order quantity.
Learn MoreOptimize Your CNC Machining Costs
Our engineers review your designs and provide cost-effective CNC machining solutions for metal parts, helping you reduce production costs, optimize processes, and ensure consistent quality for prototypes and small-batch production.
Tolerances for CNC Machining
For metal parts, CNC machining tolerances are applied according to ISO 2768-m unless otherwise specified. Tighter tolerances can be specified for specific features and are reviewed before production.
| Specification | Details |
|---|---|
| Maximum Part Dimensions | Milling: up to 4000 × 1500 × 600 mm Turning: up to 200 × 500 mm |
| Minimum Part Size | 1 × 1 mm |
| Minimum Feature Size | Φ 0.50 mm |
| Linear Dimensions | ±0.025 mm |
| Standard Tolerances | ±0.01 mm (ISO 2768-m) |
| Shaft Diameters | ±0.025 mm |
| Minimum Wall Thickness | 0.5 mm |
| Minimum Tool Diameter | End mill: 0.5 mm Drill: 1 mm |
| Non-Reamed Hole Tolerance | ±0.02 mm |
| Surface Finish | As-machined: 125 Ra or better Optional finishing on request |
| Standard Lead Time | Typically 3 business days |
CNC Machining for Metal Materials
All metal components are manufactured strictly in accordance with customer technical drawings, with our engineering team providing professional material selection consultation upon request. Every batch of raw materials features full traceability, and corresponding certification documents are available on demand.
🔍 Unsure about material selection? Our engineers offer free DFM analysis to match you with the optimal metal for your CNC machined parts.
Surface Finishing for CNC Machined Parts
ZH Precision provides tailored surface finishing for CNC machined parts, including anodizing, powder coating, plating, and polishing. All finishes are inspected for consistent quality and durability, ensuring both functional performance and aesthetic appeal.
As Machined
As machined finish leaves the surface straight from the CNC machine, providing a cost-effective option with tool marks.
Anodizing
Enhances corrosion resistance and surface hardness while adding color for improved durability and appearance.
Polishing
Polishing achieves a high gloss finish, reducing surface roughness and enhancing the aesthetic appeal of metals.
Sand Blasting
Sand blasting uses pressurized sand or other media to clean and texture the surface, creating a uniform, matte finish.
Tumbling
Tumbling smooths and polishes small parts by friction and abrasion in a barrel, offering a consistent but slightly textured finish.
Electropolish
Electropolish is a chemical process that smooths and brightens surfaces while improving corrosion resistance.
Alodine
Alodine coating provides corrosion protection and improves paint adhesion, mainly used on aluminum surfaces.
Electroplating
Electroplating bonds a thin metal layer onto parts, improving wear resistance, corrosion resistance, and surface conductivity.
Precision CNC Machining Quality Control
ZH Precision fully complies with ISO 9001:2015 standards. Our dedicated inspection team uses professional measuring equipment including height gauges, optical comparators, CMMs and Olympus material analyzers to perform complete inspections on all finished parts. We deliver steady, reliable prototypes and custom machined components for a wide range of industrial fields.
1. Material Verification
All incoming materials undergo strict verification to ensure they meet project specifications and industry standards.
2. Precision Machining Oversight
Our experienced machining team maintains tight tolerances and consistent adherence to design specifications throughout the production process.
3. Final Inspection & Verification
Every finished part undergoes 100% dimensional, surface, and functional inspection, ensuring full compliance with customer requirements and ready-to-ship quality.
Why Do Engineers Choose ZH Precision?
Selecting the right CNC machining provider is essential for cost efficiency, process consistency, and long-term reliability. At ZH Precision, we focus on precise CNC machining, strict process control, and clear technical communication to deliver predictable, repeatable, and high-quality results for every project.
Fully Transparent Quoting
We provide fully transparent CNC machining quotes, outlining costs, lead times, and requirements for informed decision-making.
Flexible Production Capabilities
Ability to handle diverse part sizes and materials, adapting quickly to changing project requirements without compromising precision or quality.
Precision & Process Reliability
Robust CNC machining standards and repeatable workflows ensure every component meets strict dimensional and functional requirements.
On-Time Delivery & Scalability
Efficient scheduling and reliable lead times, with the capacity to scale from small runs to larger production, keeping projects on track.
Expert DFM & Engineering Support
Our engineering team offers free Design for Manufacturability (DFM) analysis to optimize part designs, reduce machining costs, avoid production risks, and improve overall part performance.
Full Material & Finishing Solutions
We support a full range of metal materials and secondary processes including anodizing, sandblasting, plating, and heat treatment, providing one-stop customized CNC machining solutions.
What Are the Advantages of Partnering with ZH Precision?
ZH Precision’s CNC team includes professional process engineers and seasoned machinists. Redundant machining steps are eliminated, CNC programs fully optimized to slash cycle time, surface finishes upgraded, and consistent high-quality machined metal components delivered.
Every 2D drawing and 3D model undergoes thorough technical review. Missing dimensions and ambiguous technical details are supplemented, while part features are analyzed to develop custom fixtures and tailored machining strategies, keeping overall production costs reasonable.
Rigorous full-process quality protocols ensure reliable dimensional accuracy within tight tolerance ranges. Phone and email support is available around the clock, covering order arrangement, DFM design improvement, metal material consultation, and quick resolution of all technical inquiries.
How to Choose the Right CNC Machining Supplier
1.ISO 9001:2015 certified factory to guarantee all projects comply with stringent quality specifications.
2.One-stop manufacturing solution: Full in-house CNC machining and rigorous quality inspection, supported by vertically integrated production resources.
3.Highly competitive pricing, with costs up to 30% lower than suppliers in Europe and North America.
4.Flexible production schedules support both prototype and mass orders for fast turnaround.
5.Free DFM review by experienced engineers to optimize part design and cut overall production costs.
Advantages of CNC Machining
1.High precision & tight tolerances: Achieves consistent accuracy down to ±0.005 mm, ensuring your precision CNC components fit and perform reliably.
2.Complex geometry capability: Multi-axis machines produce intricate shapes, undercuts, and deep cavities, ideal for custom CNC parts with challenging designs.
3.Wide metal material compatibility: Works with aluminum, stainless steel, titanium, brass, and superalloys, supporting diverse CNC metal machining needs.
4.Flexible production volume: Supports one-off prototypes, small-batch runs, and medium-volume production, perfect for low-volume CNC machining projects.
5.Fast lead times & repeatability: Eliminates human error and reduces production delays, delivering consistent quality across all custom CNC machining orders.
Frequently Asked Questions
A：To receive an accurate quote for your custom CNC machined parts, you can upload your 2D drawings or 3D CAD models along with your requirements for material, quantity, tolerances, and surface finishes. Our engineering team will perform a full review of your design, provide free DFM suggestions if needed, and send a transparent, itemized quote within 24 hours. The quotation clearly lists material costs, machining processes, inspection items, lead time, and total pricing with no hidden charges.
A：We implement a full quality control system throughout production for CNC machined components, including incoming material verification, in-process dimensional checks, and final inspection using CMM, calipers, gauges, and hardness testing. We can provide material certificates, dimensional inspection reports, and process records upon request. All parts are fully verified before shipment to ensure they meet your drawing specifications, industry standards, and functional performance requirements.
A：Yes, we regularly provide high-precision custom CNC machining services for complex aerospace, automotive, and medical components. Our 5-axis machining capabilities allow us to produce parts with deep cavities, angled surfaces, and intricate geometries while maintaining tight tolerances. We follow strict processing standards, stable production workflows, and complete traceability to meet the high-performance demands of critical applications.
A：We offer a complete range of surface finishing treatments for CNC machined metal parts to improve appearance, corrosion resistance, wear resistance, and durability. Available options include anodizing, sandblasting, brushing, passivation, electroplating, powder coating, heat treatment, and laser marking. We will recommend the most suitable finishing process based on your material, application environment, and performance needs.
A：Absolutely. We specialize in flexible low-volume production and prototype CNC machining services with no strict minimum order quantity. Whether you need 1 piece for functional testing, small batches for product validation, or larger runs for scaled production, we maintain consistent precision, stable processing, and reliable lead times. This makes us an ideal long-term partner for engineering development and industrial manufacturing projects.