Custom CNC Milling Services in China
High-Precision Milling for Complex Parts, from Single Prototypes to Full-Scale Production.
- ISO 9001 Certified
- 5-Axis Capabilities
- Rapid DFM Feedback
Your Expert Partner for Precision CNC Milling
Celerity Precision is a premier manufacturing facility in China specializing in high-precision CNC milling. This versatile, subtractive manufacturing process uses rotating cutting tools to precisely remove material from a solid block, creating parts with complex geometries, intricate features, and tight tolerances. Our factory is built around a core of advanced CNC milling technology, enabling us to transform your most demanding designs—from simple brackets to complex housings and molds—into high-quality metal and plastic components with exceptional accuracy and surface finish.
Our Core CNC Machining Services
Our investment in state-of-the-art technology allows us to offer a full spectrum of CNC milling services. We select the most efficient and precise method to produce your parts, ensuring optimal quality and cost-effectiveness for every project.
3-Axis Milling
The foundation of CNC milling, ideal for producing parts with 2.5D geometry, including profiles, pockets, slots, and drilled holes. Our 3-axis machines are workhorses for rapid and cost-effective production of a wide range of components.
4-Axis Milling
By adding a rotational axis (the A-axis), our 4-axis milling centers can machine features on multiple sides of a part in a single setup. This reduces handling, improves accuracy, and is perfect for components with side features or cylindrical elements.
5-Axis Milling
The pinnacle of CNC milling, our 5-axis machines can move the tool and/or the workpiece simultaneously across five axes. This enables the creation of highly complex, organic shapes, compound curves, and undercuts in a single, continuous toolpath, delivering superior accuracy and surface finish for the most challenging designs.
CNC Machining Materials
Metal
A lightweight, versatile metal with an excellent strength-to-weight ratio and natural corrosion resistance.
- Available Grades: 6061, 7075, 5052, 2024, 6063, 6082, 5083
- Common Finishes: As Machined, Anodizing, Powder Coating, Sand Blasting, Chromate (Alodine)
Copper
Valued for its exceptional electrical and thermal conductivity, making it the top choice for heat sinks and electrical components.
- Available Grades: C101 (OFHC), C110 (ETP)
- Common Finishes: As Machined, Electropolishing, Plating, Clear Coat
Brass
An alloy with outstanding machinability and a natural, gold-like appearance, ideal for fittings and decorative parts.
- Available Grades: C360
- Common Finishes: As Machined, Polishing, Plating, Brushing
Bronze
Known for its low-friction properties and durability, often used for bearings, bushings, and marine hardware.
- Available Grades: C932, C954
- Common Finishes: As Machined, Tumbling
Steel
A strong, durable, and cost-effective material ideal for high-stress and industrial applications.
- Available Grades: Mild Steel (1018, 1020), Alloy Steel (4140, 4340), Tool Steel
- Common Finishes: Black Oxide, Zinc Plating, Powder Coating, Painting
Stainless Steel
Offers excellent strength and superior corrosion resistance, making it ideal for medical, marine, and food-grade applications.
- Available Grades: 303, 304/304L, 316/316L, 17-4 PH, 416, 420
- Common Finishes: Passivation, Electropolishing, Brushed Finish, As Machined
Magnesium
An extremely lightweight metal, ideal for applications where every gram counts.
- Available Grades: AZ31, AZ91
- Common Finishes: Chromate Conversion Coating
Titanium
A high-performance metal with an unmatched strength-to-weight ratio and excellent biocompatibility.
- Available Grades: Grade 2, Grade 5 (Ti-6Al-4V)
- Common Finishes: As Machined, Anodizing (for color), Sand Blasting
Plastic
ABS
A tough, impact-resistant, and cost-effective thermoplastic ideal for housings, enclosures, and prototypes.
Common Finishes: As Machined, Sand Blasting, Painting
PC (Polycarbonate)
A strong, transparent plastic with excellent impact resistance and heat tolerance.
- Common Finishes: As Machined, Vapor Polishing, Painting
PLA
A biodegradable thermoplastic derived from renewable resources, commonly used for rapid prototyping.
Common Finishes: As Machined, Painting
PMMA (Acrylic)
A rigid, transparent plastic with excellent optical clarity, often used as a lightweight alternative to glass.
Common Finishes: As Machined, Vapor Polishing, Flame Polishing
POM (Delrin/Acetal)
A low-friction, high-stiffness engineering plastic with excellent dimensional stability, ideal for gears and bearings.
Common Finishes: As Machined
PA (Nylon)
A durable and versatile plastic with good wear resistance and chemical resistance.
- Available Grades: PA6, PA66
- Common Finishes: As Machined
PE (Polyethylene)
A common, chemically resistant plastic family available in various densities for different applications.
Common Finishes: As Machined
PEEK
A high-performance polymer with exceptional mechanical strength, chemical resistance, and high-temperature stability.
Common Finishes: As Machined
PP (Polypropylene)
A lightweight plastic with excellent chemical resistance and high elasticity, often used for living hinges.
Common Finishes: As Machined
HDPE
A rigid, strong version of PE with excellent impact strength and a waxy surface feel.
Common Finishes: As Machined
HIPS
A low-cost, rigid plastic that is easy to machine, often used for pre-production prototypes.
Common Finishes: As Machined, Painting
LDPE
A soft, flexible, and tough version of PE, known for its outstanding flexibility.
Common Finishes: As Machined
PBT
An engineering thermoplastic with good stiffness, dimensional stability, and resistance to chemicals and heat.
Common Finishes: As Machined
PPA
A high-performance polyamide with superior strength, stiffness, and heat resistance compared to standard nylon.
Common Finishes: As Machined
PAI (Torlon)
An extremely strong and stiff high-performance plastic that retains its properties at very high temperatures.
Common Finishes: As Machined
PET
A strong, stiff engineering plastic with good chemical resistance and excellent wear properties.
Common Finishes: As Machined
PPS
A high-performance thermoplastic with outstanding chemical resistance and dimensional stability at elevated temperatures.
Common Finishes: As Machined
PS (Polystyrene)
A clear, hard, and brittle low-cost plastic, often used for general-purpose prototypes.
Common Finishes: As Machined, Painting
PVC
A rigid, durable, and cost-effective plastic with excellent resistance to chemicals and moisture.
Common Finishes: As Machined
PTFE (Teflon™)
Known for its extremely low coefficient of friction, chemical inertness, and high-temperature resistance.
Common Finishes: As Machined
UPE (UHMW)
An extremely dense and tough version of polyethylene with exceptional abrasion and impact resistance.
Common Finishes: As Machined
Bakelite
A hard, dense, and heat-resistant thermoset plastic with good electrical insulating properties.
Common Finishes: As Machined
FR-4
A glass-reinforced epoxy laminate valued for its high strength and excellent electrical insulating properties.
Common Finishes: As Machined
Enhance and Protect Your Parts with the Perfect Finish
As Machined
The standard, most cost-effective finish with visible tool marks, straight from the machine.
Sand Blasting
Creates a uniform, non-reflective matte texture, ideal for aesthetics and improving paint adhesion.
Tumbling
A mass-finishing process to efficiently deburr and smooth batches of parts.
Electropolishing
Creates an ultra-smooth, bright, and microscopically clean finish on metals like stainless steel.
Heat Treatment
A thermal process to alter mechanical properties like hardness and strength (not a cosmetic finish).
Alodine
A chemical coating for aluminum that provides corrosion protection while maintaining conductivity.
Anodizing
Creates a hard, durable, and decorative colored surface on aluminum and titanium.
Teflon™ Coating
A non-stick, low-friction fluoropolymer coating with excellent chemical resistance.
Black Oxide
A conversion coating for steel that provides a deep black finish with no dimensional change.
Electroless Plating
A uniform chemical plating process (e.g., nickel) for excellent hardness and corrosion resistance on all surfaces.
Electroplating
An electrochemical process to deposit a metallic layer (e.g., zinc, nickel, chrome) for decorative or protective use.
Painting
A spray-applied liquid coating offering unlimited color options for a decorative and protective finish.
Passivation
A chemical cleaning process that maximizes the natural corrosion resistance of stainless steel.
Powder Coating
An electrostatically applied powder cured to form a finish that is tougher than conventional paint.
Electrophoresis
A dipped coating process (E-coat) providing complete and uniform coverage on complex parts.
Brushed Finish
A premium decorative finish with a unidirectional satin grain for a sophisticated, high-end look.
Ready to Mill Your Custom Parts?
Our advanced milling centers are ready for your project.
Why Choose Celerity Precision
Multi-Axis Expertise
Our investment in advanced 3, 4, and 5-axis CNC milling technology allows us to produce highly complex parts in a single setup, ensuring superior accuracy and faster lead times.
Uncompromising Quality Control
As an ISO 9001 certified manufacturer, we implement rigorous in-process and final CMM inspections to guarantee every milled part meets your exact specifications and tolerance requirements.
Engineering and DFM Support
We provide expert Design for Manufacturability (DFM) feedback with every quote, helping you optimize your part's design for cost-effectiveness and flawless production.
Broad Material and Finishing Capabilities
We are your single-source partner, offering a vast inventory of metals and plastics and a complete suite of in-house finishing services to take your part from raw material to finished product.
Rapid & Reliable Delivery
Our streamlined workflow, from 24-hour quoting to efficient production scheduling, ensures we deliver your precision-milled components on time, every time.
Prototype to Production Flexibility
Whether you need a single, complex prototype or a high-volume run of thousands of parts, our facility is equipped to handle your project with the same level of precision and care.
From Digital File to Milled Part in 4 Simple Steps
Submit Design & Get Quote
Securely upload your CAD file. Our team provides a detailed quote and DFM feedback within 24 hours.
DFM Review & Order Confirmation
We help optimize your design. Once you approve the quote, we schedule production.
Precision Milling
Your parts are expertly milled on the optimal machine (3, 4, or 5-axis) by our skilled technicians.
Inspection & Global Delivery
Every part is rigorously inspected with our CMM and other tools before being securely packaged and shipped to your location.
How We've Helped Our Clients Succeed
Challenge
An aerospace client required a complex monolithic housing from 7075 aluminum with deep pockets and thin walls.
Solution & Result
Our 5-axis milling strategy allowed us to machine the entire part in a single setup, eliminating tolerance stack-up and delivering a lighter, stronger component ahead of schedule.
Challenge
A robotics company needed a series of custom actuator mounts from 6061 aluminum with precisely located bores and side features.
Solution & Result
By using our 4-axis milling centers, we were able to machine all features without re-fixturing, ensuring perfect alignment and delivering a batch of 500 identical parts with exceptional repeatability.
Challenge
A medical device designer needed a prototype for a handheld surgical tool made from PEEK with an ergonomic, contoured surface.
Solution & Result
We used simultaneous 5-axis milling to create the smooth, organic shape, delivering a fully biocompatible and functional prototype that perfectly matched the designer's ergonomic vision.
Frequently Asked Questions
What is the difference between CNC milling and CNC turning?
In milling, a rotating tool removes material from a stationary workpiece, ideal for creating flat surfaces, pockets, and complex shapes. In turning, the workpiece rotates while a stationary tool removes material, ideal for creating cylindrical parts.
What is 5-axis CNC milling, and why is it better?
5-axis milling allows the cutting tool to approach the workpiece from five different directions simultaneously. It is better for creating highly complex, curved surfaces and undercuts in a single setup, which improves accuracy and efficiency.
What is the maximum part size you can mill?
Our milling capabilities can accommodate parts up to [Insert Max X Dimension, e.g., 1200mm] x [Y Dimension] x [Z Dimension]. Please contact us for specific inquiries about large parts.
Can you mill hardened steel?
Yes, we offer hard milling services. This process uses specialized cutters and techniques to machine materials that have already been heat-treated, allowing for very high-precision finished parts.
What tolerances can you achieve with CNC milling?
We can consistently achieve tolerances of ±0.025mm (±0.001″). For critical features, tighter tolerances down to ±0.005mm (±0.0002″) are possible depending on the geometry and material.
How do you ensure a good surface finish on milled parts?
We achieve superior surface finishes by using high-quality cutting tools, optimized feed rates and spindle speeds, and advanced toolpath strategies (like scallop or high-speed finishing passes).