Precision, performance, and service | Machined in Wisconsin Custom Machining
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American machining made smarter

Services for smarter manufacturing

SERVICES

ACI Industries serves several industries and specializes in machining complex components, providing accurate and consistent services on time and on budget for powersports, motorcycles, agriculture, construction, turf, defense (including firearms), pumps and filtration, steel processing, foundry, and general industrial fields. From supplying a fully sourced, machined, and finished Tier 1 component to providing a machined feature on a customer-supplied component, we’ve got you covered.

OUR PARTNERS

CNC Machining

CNC (Computer Numerical Control) machining is a subtractive manufacturing process that transforms a block of material into a pre-designed specification. ACI’s CNC services provide unrivaled demand precision and consistency for metal and plastic components, and all machined in the U.S. Our professional engineers, technicians, and machinists take pride in delivering the finest-quality machined parts for manufacturers spanning multiple industries.

Tight-tolerance CNC machining | CNC milling and turning services | Custom OEM components and assemblies | Support for machined part assembly | Short-run and high-volume production​ | Prototype-to-production scalability | Tier 1 supplier to U.S. manufacturers

CNC milling is a type of CNC machining that is optimal for cutting complex geometric shapes. During the milling process the machine’s movements are guided by pre-programmed code, which specified its toolpath, speed, and cutting depth, ensuring consistent and highly accurate results. At ACI Industries, we provide cutting-edge CNC milling services using a wide range of automated vertical, horizontal, and 5-axis machining centers. Our focus is on delivering tight-tolerance, production-ready parts with consistency, speed, and precision.

Automated 5-Axis CNC Milling | 3/4-Axis CNC Milling | 2-Axis CNC Milling

CNC Turning is a type of CNC machining that is particularly well-suited for simple and complex cylindrical geometries. With this process, the workpiece rotates while the cutting tool remains stationary. At ACI Industries, our CNC turning capabilities are built for precision, quality, and consistency. Our operations feature advanced multi-axis turning centers equipped with bar feeders, live tooling, and robotic automation, enabling the efficient production of high-tolerance components in a wide range of materials.

4-Axis Chucked | Bar Fed CNC Turning | Precision turned parts

Our skilled team understands the best options for your material and surface finish needs, and we will adapt the technology to fit your specific project requirements.

ACI’s team uses state-of-the-art CAD (Computer-Aided Design)/CAM (Computer-Aided Manufacturing) software, design, and manufacturing technologies, plus the newest, high-volume, high-speed machines to fulfill your most demanding jobs. Whether you’re working from a fully designed model or a rough idea, our team uses high-tech solutions with decades of industry experience to provide unrivaled machining services.

Innovate with purpose

ABOUT

Our services include machining for customers spanning multiple industries, delivering the finest quality, on time and on budget.

ABOUT US
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Since

ACI Industries is an acquisition of Hayes, a trusted and top-rated provider of high-performance braking solutions with decades of experience spanning multiple fields. Our services are engineered for performance and consistency. As American machinists, we take pride in elevating the standard for tight-tolerance CNC turning and milling. We offer the speed, accuracy, and reliability required to stay competitive in today’s market.

ACI Industries provides custom machining services in Wisconsin for customers that demand precision and consistency. Based in Mequon, we specialize in CNC machining, milling, turning, and CAD/CAM design for tight-tolerance metal and plastic components. Our team delivers consistent quality, responsive lead times, and a strict adherence to the highest standards.

From tight-tolerance prototypes to full production runs, ACI Industries delivers high-quality plastic and metal components with speed, accuracy, and reliability—and all machined in America. Explore how #ACI can support your next machining project today.

ACI Industries, A HAYES Brand
ACI Industries, A HAYES Brand
ACI Industries, A HAYES Brand
ACI Industries, A HAYES Brand
ACI Industries, A HAYES Brand
ACI Industries, A HAYES Brand

Machined in the U.S.

High-quality metal components with speed, accuracy, and reliability.

PARTNERS

Our team ensures they have access to the most current, state-of-the-art CAD/CAM design and manufacturing technologies, as well as the newest, high-volume, high-speed gear, to fulfill your most demanding jobs.

OUR PARTNERS & INDUSTRIES

Advanced equipment, skilled team, consistent quality From Concept to Code — We Bring Your Parts to Life ACI Industries, A HAYES Brand ACI Industries, A HAYES Brand

Engineered for precision

Built to perform

NEWS

The CNC machining industry is always expanding and evolving. Check out the latest news and stay updated on ACI’s services in Wisconsin and nationwide, providing precision and consistency, on time and within your budget.

Let’s Talk

  • News /

    ACI News

    High Volume CNC Milling Supplier: The 2026 Guide to Automated Scalability & Tier 1 Reliability

    Escaping the Prototype Trap A precision component is designed, CNC machined, and validated. First [...]

  • News /

    ACI News

    Titanium vs. Inconel Machining Challenges: The Tier 1 Guide to Automating Superalloys

    In 2026, the aerospace and defense supply chain isn't limited by design capability; it's [...]

  • News /

    ACI News

    Rapid CNC Prototyping Services for Functional Testing & Design Validation

    Design fast, machine faster, and validate with confidence. When you need a functional prototype [...]

  • News /

    ACI News

    The Engineer’s Guide to Selecting an Aluminum CNC Milling Service

    Aluminum is one of the most widely used materials in modern manufacturing. Mastering its [...]

“I’ve had the opportunity to work for the bicycle business and the powersports business of Hayes, have watched the company acquire new brands, develop exciting products, and thrive. I am grateful to work at a place where team members support one another and there is an opportunity to grow alongside the company.” Josh Pallesen GENERAL MANAGER | ACI INDUSTRIES ACI Industries, A HAYES Brand

– Serving since 1982

GET A QUOTE TODAY.

Whether you need a single prototype or full-scale production support, we’re ready to help. Contact us to start your next project.

From rapid prototyping to high-volume production.