CNC Milling

ACI, a HAYES brand.
Precision CNC milling services with 3-, 4-, and 5-axis capability

Production-ready precision. Built for scale.

At ACI Industries, CNC milling isn’t just a capability—it’s a core strength. Backed by over two decades of hands-on experience, we offer automated vertical, horizontal, and 5-axis CNC milling services tailored to deliver tight-tolerance parts with unmatched consistency, speed, and scalability.

Our state-of-the-art facility is equipped with a diverse range of multi-axis machining centers and robotic loading systems, enabling us to run lights-out production and meet the most demanding manufacturing schedules.

From complex geometries to drilling and taping, we bring deep technical expertise and process control to every project—delivering production-ready parts that exceed expectations.

  • Equipment | ACI Industries, A HAYES Brand
  • ACI Industries, A HAYES Brand
  • 3/4-AXIS CNC MILLING | ACI Industries, A HAYES Brand
  • ACI Industries, A HAYES Brand
  • ACI Industries, A HAYES Brand

Innovate with purpose

CNC MILLING

Essential services spanning countless industries

ABOUT US

Why leading manufacturers choose ACI for CNC milling

  • Proven Success in Defense, Powersports, Agriculture, Construction and providing Tier 2 support for foundries and stamping companies
  • Experience Across Iron, Steel, Aluminum, Stainless, Titanium, Plastics, and others

Our shop is equipped with SW, Mazak, Brother, Smart, Hurco, and Okuma, including 4-axis and palletized systems, allowing us to handle complex geometries, larger production runs, and fast changeovers.

Tight tolerances & consistency:
With decades of experience, our machinists and programmers deliver parts that meet demanding specifications every time.

We take pride in our responsiveness and efficiency. Our team works closely with yours to meet project deadlines without compromising quality.

Whether you need a single machined prototype or thousands of parts for production, we can scale to meet your needs.

We provide full-service, Tier 1 custom machining solutions, including CNC machining, turning services for cylindrical parts, CAD/CAM design support to accelerate programming and optimize tooling paths, and a dedicated focus on inspection and precision measurement throughout the entire production workflow.

From a thread on a rod in one of our lathes to machining a safety-critical feature on a high-performance braking caliper on one of our mills, our precision equipment provides ISO-certified processes. Our quality systems ensure every part meets your specs—the first time and every time.

  • 3-, 4-, & 5-axis milling
  • Part weights from <1 lb to 3,850 lbs
  • Tolerances to ±0.0005”
  • Complex geometries
  • Scalable production volumes
  • In-house CMM inspection
  • Lights-out automation
  • Palletized machining
  • Quick-change fixturing
  • High-RPM milling for fine finishes

  • Aluminum
  • Steel
  • Stainless steel
  • Brass
  • Bronze
  • Copper
  • Monel
  • Iron
  • Plastic
  • Exotic alloys
  • Others

ACI Industries: A HAYES Brand

Custom Machining Solutions

Get in touch with our team of machining experts today for flawless services for manufacturers in any industry.

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.