Online CNC machining services for metal or plastic prototyping and production parts.

  • 99.93% quality pass rate
  • Provide free samples
  • Fast delivery in 3-7 days
  • Tolerance less than ±0.01 mm

Precision and Quality – Right Down to the Smallest Detail.

RALLY - Your Reliable Partner for CNC Machining Services

RALLY offers expert CNC machining for a diverse range of metal and plastic components. We excel in milling, turning, EDM, wire EDM, and surface grinding. With a fleet ranging from 3-axis to 5-axis CNC machining centers, our 3-axis machines boast impressive spindle speeds of up to 24,000 RPM and feature 14 to 24 station automated turrets. This ensures optimal efficiency in CNC part production. Whether you're seeking prototypes or limited-run parts, RALLY's machining solutions stand out as the preferred choice.

Machined Parts Manufacturer | Precision CNC Machining

Our Equipments

Having honed our skills in CNC machining for 18 years, we've not only amassed expertise but also expanded our equipment inventory significantly. At the heart of our operations, we proudly boast 50 CNC machining centers. In addition, complementing these are our 20 sets of CNC lathes. Furthermore, to ensure versatility in our services, we have invested in 10 sets of 4-axis linkage machining centers. Not stopping there, we've also incorporated 4 sets of 5-axis linkage machining centers. Lastly, our arsenal is completed with 10 sets of Citizen walking centers, underscoring our commitment to precision and excellence.

Automatic lathe centering machine

Our CNC Machining Services

CNC Milling Service

CNC milling is a subtractive manufacturing process that employs computerized controls to remove material and produce intricate parts. Utilizing multi-axis motion, milling can achieve complex shapes, slots, holes, and details with precision. Industries ranging from aerospace to healthcare rely on milling for its capability to produce both simple and complicated components with high accuracy.

CNC Milling- CNC Machining Service
CNC Turning Service

CNC turning involves a cutting tool removing material from a rotating workpiece. This service primarily produces cylindrical parts with features like grooves, tapers, and contoured profiles. Turning's efficiency and precision make it popular in various sectors, including automotive and electronics. With CNC controls, turning ensures repeatability and consistency, even for high-volume production.

CNC Turning - CNC Machining Service

CNC Machined Parts Product Display

CNC medical component CNC Milling Parts
Aluminum electronic enclosures
Aerospace Component CNC Milling Parts
6061 Aluminum CNC Machining Parts
CNC Machining Brass Elliptical Waveguide Connector
Bike-Parts-Machined Parts Manufacturer
CNC Machining Brass flange with taper

Customer Testimonials for RALLY’s CNC Machining Services

Product Development Lead

James Calloway

⭐⭐⭐⭐⭐ "I've collaborated with multiple CNC service providers over the years, but RALLY stands out. Their attention to detail and commitment to timely deliveries has significantly streamlined our product development cycle. A trustworthy partner in every sense!"

Procurement Manager

Lisa Moreno

⭐⭐⭐⭐☆ "RALLY's CNC services are top-notch! They always provide consistent quality, and their customer support is responsive and helpful. Only wish is for a more intuitive order tracking system. Otherwise, highly recommended!"

Aerospace Engineer

Raj Patel

⭐⭐⭐⭐⭐ "In the aerospace sector, precision is paramount. RALLY delivers that precision every time. Their CNC machined parts consistently meet our rigorous standards, making them an invaluable partner for our demanding projects."

CNC Machining Materials


CNC machining can be used on a wide range of metals, each with various grades or types that cater to specific applications based on their mechanical properties, machinability, and other factors. Here’s a breakdown of some popular metals and their respective grades/types:

Metal material for cnc machining service
  • 6061: General-purpose alloy with good strength and corrosion resistance. Commonly used for aerospace and automotive components.
  • 7075: High-strength alloy used for aircraft and aerospace applications.
  • 2024: Often used in aerospace parts, it offers a balance between strength and fatigue resistance.
  • 5083 & 5052: Popular for marine applications due to high resistance to saltwater corrosion.
  • C360: Free machining brass, often used for decorative parts, gears, and fasteners.
  • C260 & C270: Often used in forming operations for parts like cartridges.
  • C101: Pure copper, excellent conductivity. Commonly used in electrical applications.
  • C110: Another variant of electrical copper with excellent conductivity.
  • Mild Steel (Low Carbon Steel): Typically contains less than 0.3% carbon. It’s easy to machine and weld but offers lower strength.
  • Carbon Steel (1045, 1018): Middle range carbon content, which offers a balance between hardness and machinability.
  • Alloy Steel (4130, 4140): Enhanced mechanical properties due to the addition of other elements.
  • Tool Steel (D2, A2, O1): Highly hard and wear-resistant. Used for making cutting tools, dies, and punches.
  • 304 & 304L: General-purpose stainless with good corrosion resistance.
  • 316 & 316L: Higher corrosion resistance, especially to chlorides. Common in marine applications.
  • 303: Free machining variant of 304, preferred when extensive machining is required.
  • 440C: A high-carbon stainless steel with excellent hardness.
  • Aluminum Bronze: Strong and resistant to wear and corrosion. Often used for bearings and gears.
  • Tin Bronze: Good wear resistance, often used for bushings and bearings.
  • AZ31B: Offers a good balance of strength to weight, often used in aerospace components.
  • Zamak: An alloy of zinc with aluminum, magnesium, and copper. Commonly used in die casting.


CNC machining is compatible with a wide range of materials, including many plastics. Each plastic material has its unique properties, making it suitable for specific applications. Here's a breakdown of some commonly machined plastics and their grades or types:

plastic material for cnc machining service
  • Standard ABS: General purpose, widely used for prototypes.
  • ABS-ESD: Electrostatic dissipative ABS used for components that shouldn’t spark.
  • ABS-M30: High strength ABS, suitable for production parts.
  • Nylon 6/6: Good mechanical properties and wear resistance.
  • Nylon 12: Known for its flexibility.
  • Glass-filled Nylon: Improved strength and rigidity due to glass reinforcement.
  • Standard PC: High impact strength and optical clarity.
  • PC-ABS: A blend that offers the best properties of both materials.
  • Polycarbonate-ISO: Biocompatible PC for medical applications.
  • Unfilled PEEK: Offers excellent mechanical properties and chemical resistance.
  • Carbon-filled PEEK: Enhanced strength and stiffness.
  • Glass-filled PEEK: Improved dimensional stability.
  • HDPE (High-Density Polyethylene): High strength-to-density ratio.
  • LDPE (Low-Density Polyethylene): Known for its flexibility.
  • UHMWPE (Ultra High Molecular Weight Polyethylene): Extremely tough and has high abrasion resistance.
  • Homopolymer: Good chemical resistance and weldability.
  • Copolymer: Improved impact strength, especially at low temperatures.
  • Delrin 150: General-purpose grade.
  • Delrin AF: Contains PTFE fibers, leading to reduced friction.
  • Delrin 570: Glass-filled version with enhanced rigidity.
  • Unfilled PTFE: Known for its low friction and high temperature resistance.
  • Glass-filled PTFE: Improved compressive properties.
  • Carbon-filled PTFE: Enhanced wear resistance.
  • Rigid PVC: Used in construction and piping.
  • Flexible PVC: Used in cables, tubing, and inflatable structures.
  • General purpose PMMA: Used for transparent components and displays.
  • SBC (Styrene Block Copolymers): Provides excellent clarity.
  • TPU (Thermoplastic Polyurethane): High abrasion resistance.
  • TPO (Thermoplastic Olefin): Used in automotive applications.
  • PET-G: Known for being easy to machine and its clear finish.
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CNC Machining Part Surface Finishes

After CNC machining, parts are often finished with a variety of surface finishes to enhance their appearance, functionality, or durability.

RALLY offers a wide range of surface finishes, and we've listed just a few of the common ones available, but there are many more available for custom CNC machined parts.

Metal Surface Finishing

Parts are left with the finish directly from the CNC machine. There might be visible tool marks.

Tiny glass beads are shot at a part, giving it a smooth matte appearance.

An electrochemical process used primarily for aluminum. It provides corrosion resistance, increased surface hardness, and can be dyed in various colors.

  • Type II: Standard anodizing, often used for aesthetic purposes.
  • Type III: Hardcoat anodizing, thicker and more durable.

A dry powder is electrostatically applied and then baked to form a protective and decorative finish. It's available in a wide range of colors and textures.

A blackening process for ferrous alloys, stainless steel, and copper and its alloys. It provides a black finish and minor corrosion resistance.

A coating for aluminum that provides corrosion resistance and good conductivity. Can be golden/yellowish or clear.

Depositing a thin layer of metal onto the part's surface. Common types include nickel, chrome, zinc, gold, and copper plating.

Primarily for stainless steel. It removes free iron from the surface to enhance corrosion resistance.

A finishing technique that creates a pattern of fine lines on metal surfaces. Commonly used for decorative purposes.

Parts are polished to give a shiny, mirror-like finish.

An electrochemical process that polishes, deburrs, and smoothens metal surfaces, making them extremely shiny and improving corrosion resistance.

Using a laser to engrave or mark the surface of a part.

A process that produces a patterned texture on the surface of a part, typically to improve grip.

Parts are placed in a barrel with abrasive media, which is then rotated to smooth and polish the parts.

While not purely a 'surface' finish, heat treating can alter the properties of the material, including its surface hardness.

A heat treating process that diffuses nitrogen into the surface of a metal to create a case-hardened surface.

CNC Machining Services for Custom Parts

From Rapid Prototyping to Mass Production

From rapid prototyping to production, CNC machining provides a range of services that cater to various stages of product development and manufacturing.

rapid prototyping
Prototyping Machining


  • Test and refine designs before mass production.
  • Quickly produce functional parts to validate form, fit, and function.


  • Fast turnaround times.
  • Can produce complex geometries and intricate details.
  • Materials may vary from plastics to metals.
  • Typically for low quantities (1-50 pieces).
Small Batch Production
Low-Volume Machining


  • Produce parts for limited-run applications, pilot runs, or market testing.
  • Fill the gap between prototyping and high-volume production.


  • Quantities can range from dozens to a few hundred pieces.
  • Provides flexibility in terms of design modifications.
  • Often used for specialty products or short-term needs.
Large-Scale Manufacturing
Production Machining


  • High-volume manufacturing of consistent, repeatable parts.


  • Lower per-unit cost due to bulk material purchasing and optimized machining processes.
  • Consistent and repeatable part quality.
  • Suitable for mass-market products.

Applications of CNC Machining

CNC (Computer Numerical Control) machining is an essential method in modern manufacturing due to its precision, repeatability, and versatility. Here are some of the key applications of CNC machining across various industries:

CNC machining China manufacturer: Prototyping


Before mass production, prototypes validate a product's design and function. CNC machining offers speed and accuracy in creating these prototypes, allowing for efficient design iterations and testing, ensuring the final product meets desired specifications.

CNC machining China manufacturer: medical application


CNC technology is pivotal in crafting medical tools, implants, and devices with high accuracy. Instruments for surgeries, orthopedic implants, and dental prostheses all benefit from the precision and repeatability of CNC processes, ensuring patient safety and device efficacy.

CNC machining China manufacturer: automotive CNC machining


CNC machining plays a crucial role in producing precision automotive components, such as engine parts, transmission gears, brake components, and intricate alloy wheels. The ability to achieve tight tolerances ensures optimal vehicle performance and safety.

CNC machining China manufacturer: mold making

Molds and Tooling

CNC machines create highly accurate molds for injection molding and dies for casting or forging. Ensuring the precision of these tools is paramount, as they directly impact the quality of mass-produced items.

CNC machining China manufacturer: electronics application


Modern electronics demand intricate components with high precision. CNC machining crafts parts like heat sinks, connectors, and casings, playing a vital role in ensuring electronic devices are both functional and durable.

CNC machining China manufacturer: consumer products

Consumer Goods:

Everyday products, from eyewear frames to kitchen appliances, often contain CNC-machined components. This technology ensures these goods are both aesthetically pleasing and functionally reliable for everyday use.

Quick Quote

Get An Accurate Quote For Your Projects. Send your 2D/3D drawings via online form.

  • Machined prototypes in 3-5 days
  • 60+metal and plastic material
  • 20+ surface finishes
  • Tolerances down to +/-0.01mm
  • Customized design based on drawing
  • Free samples before order confirmation
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CNC Precision Machining Services China Manufacturer/Supplier/Factory

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