Online CNC Machining Service

Professional CNC machining service provider in China

Professional CNC machining service provider in China, from prototyping to mass production of parts. We deliver exactly what you design and offer factory prices for your CNC parts.

Starting Inquiry

CNC Machining Capabilities

Yonglihao Machinery is a reliable CNC machining service provider. Our China factory is equipped with professional turning/milling equipment with tolerances as low as 0.001 inches. In addition to CNC machining, we also offer metal stamping, EDM and die casting services. to meet different machining needs. Whether you have a simple design or a complex design, we have the machining equipment to meet your machining needs. Upon custom request, we can also provide hole lining and grinding processes. If you need a reliable supplier who can deliver plastic and metal parts quickly. Then Yonglihao Machinery is your reliable partner.

CNC Milling Service
5 Axis CNC Machining Services
CNC Turning Services

CNC Machining Parts Gallery

We have provided rapid prototyping as well as low and high volume machining to several customers for a variety of parts needs in the Aerospace/Automotive/Medical/Robotics industries. Below is a selection of CNC prototypes and finished parts we’ve made for our clients.

CNC Machining Materials

We can provide CNC machining services for over 50 metals and plastics, including but not limited to.

Metal

Plastics

Find customised materials:These are our standard material options. If you can’t find what you’re looking for, feel free to contact our CNC machining experts for personalized material suggestions.

CNC Machining Surface Finishes

In addition to our expert CNC machining services, Yonglihao Machinery also offers a variety of surface finishing options to meet both your cosmetic and functional requirements.

As machined
As machined(Ra 3.2μm / Ra 126μin)

Workpieces are left with natural tool marks and roughness. Ideal for applications that do not require a special look or additional machining.

Smooth Machining CNC Machine Part
Smooth Machining (Ra 1.6μm / Ra 63μin)

Higher accuracy and smoother surfaces for precision machinery, optical instruments and medical device parts.

Polishing metal components
Polished (Ra 0.8μm / Ra 32μin)

Smooth and shiny polished surfaces for decorative parts, medical devices and high precision equipment.

Bead Blasting cnc Parts
Bead Blasting

Cleaning and polishing of the surface to achieve a matt and smooth effect.

Bead Blasting + Anodising Type II CNC parts
Bead Blasting + Anodising Type II

The surface is bead blasted to a matt finish and then anodised for better corrosion and abrasion resistance. Available in various colours, commonly used for aluminium parts.

Sandblast + Type III Anodised (Hard Coat) parts
Sandblast + Type III Anodised (Hard Coat)

After sandblasting and polishing, the parts are anodised to obtain a thick coating with high abrasion resistance, increasing hardness and durability, especially for aluminium parts that require extra strength.

Black Oxide Parts
Black Oxide

A black coating applied to steel and stainless steel to prevent corrosion and improve appearance. Commonly used for automotive, mechanical and decorative parts.

Powder Coat

A robust, wear-resistant coating applied by electrostatic spraying. Available in glossy and matt colours, it is similar to paint and is used on furniture, metal products and automotive parts.

Chromate Conversion Coating Parts
Chromate Conversion Coating

Adds a protective layer to aluminium or zinc alloys to improve corrosion resistance and electrical conductivity. Used in aerospace, electronics and automotive parts.

Electroplating parts
Electroplating

Plating a thin layer of metal to improve corrosion resistance, abrasion resistance or electrical conductivity, and to improve appearance.

Brushed metal parts
Brushed

Adds texture to the surface of a metal part to give it a metallic feel. Commonly used in household appliances and decoration.

Tumbling

A process that smooths parts by using abrasives to remove burrs and sharp edges, improving surface finish

CNC machining tolerances

Our CNC machines deliver precision tolerances that meet or exceed industry standards, ensuring consistent accuracy and seamless integration of parts. With advanced equipment and strict quality control, we achieve tolerances as tight as ±0.001 inches for precision applications, tailored to your specifications.
 
Features
Description
Maximum Part Size
CNC Milling: Up to 80 x 48 x 24 inches (2,032 x 1,219 x 610 mm) for 3-axis/5-axis milling, or 157.5 x 59.1 x 23.6 inches (4,000 x 1,500 x 600 mm) for large-scale setups.
CNC Turning: Up to 62 inches (1,575 mm) in length and 32 inches (813 mm) in diameter, or 7.9 x 19.7 inches (200 x 500 mm) for precision turning.
Minimum Part Size
CNC Milling: 0.2 x 0.2 x 0.2 inches (5 x 5 x 5 mm).
CNC Turning: 0.08 x 0.08 inches (2 x 2 mm). Custom fixturing may be required for micro parts.
General Tolerances
Metals: ISO 2768-m, ±0.004 inches (±0.1 mm).
Plastics & Composites (e.g., PE, PMMA): ISO 2768-c, ±0.010 inches (±0.25 mm).
Surface Roughness: Ra 0.8 achievable with post-processing.
Geometric Tolerances: Verticality, parallelism, and concentricity down to 0.001 inches for precision setups.
Precision Tolerances
Tighter than ±0.001 inches (±0.025 mm) achievable for metals and select materials per drawing specifications and GD&T annotations. Subject to part geometry and material (e.g., plastics may require wider tolerances).
Minimum Feature Size
0.08 inches (2 mm). Smaller features possible depending on part geometry and material (e.g., metals support finer details than plastics like PE).
Minimum Wall Thickness
0.02 inches (0.5 mm). Thicker walls recommended for plastics (e.g., PE) to prevent deformation.
Minimum End Mill Size
0.02 inches (0.5 mm). Suitable for micro-milling applications with high-precision tools.
Minimum Drill Size
0.01 inches (0.3 mm) for metals; 0.04 inches (1 mm) recommended for plastics and general applications. Deep-hole drilling may require larger diameters.
Minimum Diameter
0.01 inches (0.3 mm). Achievable for small pins or holes in metals with precision tooling.
Production Volume
Prototyping: 1–100 pieces.
Low Volume: 101–10,000 pieces.
High Volume: Above 10,001 pieces. Tighter tolerances may impact high-volume lead times.
Lead Time
5 business days for most projects. Simple parts can be delivered in as little as 1 business day, subject to design complexity and material availability.

CNC Machining Design Guide

Optimize your designs for manufacturability with Yonglihao Machinery’s helpful guidelines. Our experts provide feedback on your custom machined parts to ensure the best results in CNC machining.

Feature
Description
Radii
Internal corners naturally form rounded corners (radii).
 Drills: Depth ≤ 12x diameter.
End Mills: Depth ≤ 10x tool diameter.
Threads and Tapped Holes
Diameter 0.06–0.2 inches (1.5–5 mm): Depth ≤ 3x diameter.
Diameter ≥0.2 inches (5 mm): Depth ≤ 4–6x diameter.Custom threads of any specification and size available per customer requirements.
Undercuts
Supported profiles: Square, full radius, dovetail. Consult our team for complex undercut designs.
Text
CNC Milling: Minimum width 0.02 inches (0.5 mm), depth 0.004 inches (0.1 mm).
CNC Turning: Laser marking for standard text.
Custom CNC engraving or laser engraving available per customer requirements.

What is CNC machining?

CNC machining is a process in which a computer controls a cutting tool to machine metal or plastic. This method uses pre-set codes to handle complex cutting tasks, making precise parts with less human error. At Yonglihao Machinery, we use the latest CNC technology to manufacture a wide range of precision parts.

We offer 3-, 4- and 5-axis mills and lathes to meet different design requirements. Our process ensures accuracy, repeatability, and efficiency, so each part is high quality and reliable. We work with more than 50 materials, such as aluminium, stainless steel, alloy steel and copper, and offer more than 60 surface finishes for corrosion resistance, aesthetics and durability.

Custom Online CNC Machining Service

CNC Machining Challenges & Benefits

How to Work With Us

Welcome to choose our parts machining services! We provide customised solutions to our customers in an efficient, professional and reliable manner. Below are the detailed steps for you to work with us:

1
Upload a CAD File
You can easily upload your CAD files through our website. This is the first step to start working together and make sure we understand your design and needs correctly
2
Confirm specifications
Our engineers will review your CAD files and confirm all specifications with you. Our attention to detail ensures that we understand and meet your every requirement
3
Receive an instant quote
After confirming the technical specifications, you will receive an immediate quote from us. Our quotes are transparent, detailing costs, production time and other associated expenses. This helps you to have a clear understanding of the economic aspects of your project.
4
Production
Once you confirm and accept our quotation, we will start production immediately. We use advanced equipment and technology to provide high-quality manufacturing services quickly
5
Quality Control
We implement strict quality control throughout the production process. Our quality control team will carefully examine each part to make sure it meets your requirements and our standards.
6
Delivery
We will deliver the finished product to you promptly after production and quality control. We will use the agreed delivery method. Our focus on on-time delivery ensures that your project moves forward as planned.

Industries we serve

Over the past 14 years, we have served a wide range of industries including automotive/aerospace/medical with extensive design and manufacturing experience.

Robotics & Automation Industry Solutions
Medical Industry Solutions
Industrial Machinery Industry Solutions
Automotive Industry Solutions-Customized parts production
Communications Industry Solutions
solutions for the aerospace industry-Customized parts production

Why choose us for customized CNC machining?

Accuracy: We provide +/- 0.004 inch (+/- 0.1 mm) high precision machining to ensure that parts meet strict design requirements.

Quality Assurance: ISO 9001:2015 certified, we provide SGS, RoHS and material certifications to ensure reliable quality at every stage of production.

Cost-effectiveness: Our efficient production process and cost control help customers save 30-50% of production cost.

Material Selection: We offer more than 50 materials covering metals and plastics to meet the processing needs of various industries.

Engineering support: Our engineering team provides you with technical support from design to production to ensure the smooth running of your project and optimise the production process.

Delivery time: Our company is located near Qingdao and close to the logistics port to ensure fast and on-time product delivery.

FAQ

The starting price ranges from $60, depending on product complexity/lead time and quantity. There may be some deviation, so for accurate CNC machining costs, contact Yonglihao Machinery’s engineers. Provide detailed project information and design files. Our team will consider all factors and provide detailed quotes within 1 day.

The maximum part sizes differ based on the chosen material. The biggest sizes are for machined aluminum parts (6061 and 7075), as well as milled parts up to 80 x 48 x 24 (2,032 x 1,219 x 610 mm). Turned parts are available in lengths up to 62 inches (1,575 mm) and diameters up to 32 inches (813 mm). If you need larger dimensions, you can contact our engineers online.

We guarantee that all the parts we supply conform to ISO 2768. Machined metal parts conform to ISO 2768-m (medium) or ISO 2768-f (fine). Machined plastic parts comply with ISO 2768-m (medium). Depending on the customer’s needs, we are also able to realize even more demanding CNC tolerances.

Deburring and edge breaking are standard procedures for CNC parts machining. The surface finish standards will strictly follow the set drawings. The drawings will have marks/symbols/specific values to represent the standards. This will ensure that the part meets the specifications.

The factors that impact CNC machining costs include production time, part complexity, machining accuracy requirements, surface treatment, coating, and materials.

The most effective way to reduce machining time is by designing parts that can be machined quickly.

Reducing complexity is possible by splitting complex parts. The parts can then be machined separately and assembled later.

Apply additional surface treatments only where necessary. This can increase manufacturing costs on your part.

When choosing materials for a job, opt for softer metals. Soft metals are easier to machine, which reduces material waste and saves costs.

We provide common metal/plastic parts machining parts customized production. If you don’t find the material you want, you can get professional help by contacting our engineers online.

CNC Machining Resources

CNC milling machines perform cutting operations on metal parts, CNC machining for accuracy and quality control.
What Is CNC Machining? | A Comprehensive Guide
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