13 YEARS
CNC Machining
Manufacturer
52 Machines
CNC Machines
100000+
Machined Parts
96%
On Time Delivery
ISO
9001:2015 Certified 14001:2015 Certified
YUANYI provides high-precision turning services for custom turned parts and turned components. From prototypes to production runs, we deliver tight-tolerance machining, reliable quality, and fast lead times for customers worldwide.
CNC Machining
Manufacturer
CNC Machines
Machined Parts
On Time Delivery
9001:2015 Certified 14001:2015 Certified
YuanYi’s turning services are primarily used to manufacture various precision turned parts, including shafts, sleeves, couplings, pins, and other custom cylindrical components. Whether dealing with simple designs or complex parts that require high dimensional accuracy and surface finish, we are capable of completing machining according to drawing specifications. From prototype production to mass production, we consistently prioritize dimensional stability, machining consistency, and delivery efficiency to help our customers advance their product development and production schedules more smoothly.
Typical turning capacity, tolerance range, concentricity control, and surface finish capabilities for precision turned components.
| Size | Metric units | Imperial units |
|---|---|---|
| Max. turned part (Ø × length) | Ø 350 × 500 mm | Ø 13.8 × 19.7 in |
| Through-spindle bar capacity | Ø 65 mm | Ø 2.56 in |
| Typical tolerance (turned) | ±0.005 mm | ±0.0002 in |
| Concentricity (TIR, typical) | ≤ 0.01 mm | ≤ 0.0004 in |
| Surface finish (as-turned) | Ra 0.4–3.2 μm | Ra 16–126 µin |
| Surface finish (polished) | Ra ≤ 0.2 μm | Ra ≤ 8 µin |
From shafts and bushings to complex custom turned components, we manufacture a wide range of precision parts for aerospace, robotics, medical devices, electronics, and industrial applications.
From simple shafts to complex cylindrical components, our turning team focuses on stable machining processes and practical production experience.
Stable machining for shafts, sleeves, and precision cylindrical components.
Our turning masters bring over 15 years of hands-on machining experience across a wide range of precision turned components.
Reduce positioning errors by completing more operations in a single setup.
Experienced in deep grooves, threads, and difficult turning features.
Reliable dimensional consistency from prototype to batch production.
Optimized machining strategies for copper, aluminum, steel, and plastics.
A clear process helps your custom turned parts move from drawing review to production, inspection, and delivery with fewer delays.
Send your drawings, CAD files, material, quantity, and key tolerance requirements for engineering review.
We confirm the machining process, material choice, lead time, and cost before starting production.
Turning programs, tooling, and machining sequences are prepared for stable and repeatable production.
Key dimensions, concentricity, surface finish, and drawing requirements are checked before shipment.
Finished turned parts are packed securely and shipped worldwide, with follow-up support when needed.
Much of our machining expertise doesn’t come from books, but from repeated hands-on production experience. When working with parts made of different materials and featuring different structures, we inevitably encounter all sorts of unexpected challenges. The following case study of a large red copper part is a lesson we’ve learned through our practical machining experience.
With 15 years of turning machining experience, Master Luo specializes in high-concentricity and high-position-accuracy one-setup machining strategies.
In this project, we machined a batch of 99.99% pure copper turning parts with a diameter of approximately Ø250–300 mm and a length of around 230 mm. Due to the high stickiness of pure copper, deep groove machining easily caused built-up edge, poor chip evacuation, fast tool wear, and unstable dimensions.
Instead of using traditional straight-line cutting, we applied a dynamic cutting strategy. The tool stayed in a light-cutting and high-speed movement state, allowing chips to break quickly and discharge smoothly. We also optimized the tool entry method, spindle speed, feed rate, and cooling control around the deep groove area.
During continuous production of more than 50 copper components, no severe chip clogging occurred in the deep groove area. Tool wear was significantly reduced, and one roughing tool completed the entire batch while maintaining good cutting condition. This improved machining efficiency, reduced tool cost, and increased batch stability.
From initial approval to final shipment, we maintain strict quality control throughout the entire turning process. Through in-process inspections, dimensional measurements, and final inspections, we ensure that every batch of turned parts meets the specifications outlined in the drawings and maintains consistent, high-quality machining standards.
During the production process, we conduct regular spot checks on critical dimensions to promptly identify issues such as tool wear and dimensional drift, thereby preventing the mass production of defective parts.
For critical dimensions and complex features, we use equipment such as coordinate measuring machines (CMMs), 2D measuring machines, and height gauges to ensure dimensional accuracy and consistency.
For projects with specific requirements, we can perform 100% final inspections prior to shipment and provide complete dimensional inspection records as per customer specifications.
We can provide First Article Inspection (FAI) reports, dimensional inspection reports, material certificates, and other quality documentation to meet the traceability requirements of various projects.
Quality stems not only from inspection but also from early-stage process planning. Before machining, we evaluate clamping methods, machining sequences, and critical dimensional control strategies to minimize production risks at the source.
From aerospace and medical devices to robotics and industrial automation, we offer customized turning services for a wide range of industries. Whether it’s high-precision shaft components, fasteners, or complex cylindrical parts, we can provide tailored machining solutions to meet the specific requirements of each application.
Different materials have different requirements in terms of cutting tools, cutting parameters, and machining processes. With years of machining experience, we are able to develop appropriate machining solutions for various materials.
6061, 7075, and 5052 are widely used for lightweight precision parts, housings, brackets, and automation components.
304, 316, and 17-4PH are suitable for durable and corrosion-resistant parts with stable machining performance.
Ti-6Al-4V and Grade 2 are often selected for aerospace, medical, and high-strength lightweight components.
C360 and C260 provide excellent machinability for fittings, valves, and precision machined connectors.
C110 and C101 are used for electrical, conductive, and thermal management components.
POM, Nylon, PTFE, PEEK, and ABS are suitable for lightweight, wear-resistant, and insulating parts.
After the turning process is complete, we offer a variety of surface treatment services tailored to the part’s operating environment and aesthetic requirements, such as anodizing, electroplating, sandblasting, polishing, blackening, and passivation, to improve corrosion resistance, wear resistance, and overall visual quality.
Get expert support for prototypes and production parts. Upload your drawing today and receive a fast quotation from our engineering team.
No. We do not require a minimum order quantity. Whether you need a single prototype or thousands of parts, we can support your project.
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Prototype orders are typically completed within 3–5 working days, while production lead times depend on part complexity, quantity, and finishing requirements.
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Yes. We can provide dimensional inspection reports, first article inspection (FAI) reports, material certificates, and other quality documentation upon request.
Simply send us your CAD file, drawing, material requirements, quantity, and any special specifications. Our engineering team will review your project and provide a quotation as quickly as possible.