high tolerance machining services.

Precision Machining. Delivered On Time. Built to Spec.

With more than 70 years of foundry and machining expertise, we deliver CNC machining backed by precision tolerances and tailored custom machining solutions. From prototype runs to high-volume production, our in-house team delivers parts that meet tight tolerances, exact specifications, and industry standards every time.

Machining Capabilities

Our machining team is equipped to handle projects ranging from short-run prototypes to complex, tight-tolerance components. We also offer a range of secondary surface finish options.

foundry with machine shop near Chicago.

.1

CNC machining (3-axis, 4-axis, 5-axis)

.2

High-tolerance machining services

.3

Custom machining for small-batch or high-mix production

.4

Surface finish options: bead blast, Iridite, E-coat, and more

.5

Machining process optimization to improve cost and performance

With decades of experience machining aluminum castings, you can trust us to deliver parts that are precisely to print, on time, and ready for assembly.

Materials We Machine

At Precision Enterprises, we specialize in machining aluminum castings from our foundry. But our machining division also processes billet, bar stock, plate stock, and plastics into precision parts for a wide range of industries.
Here are a few types of materials we commonly machine:

Aluminum alloys

(cast and billet)

Stainless steel

Titanium & specialty alloys

(upon request)

Plastics and engineered polymers

Our Machines & equipment

Our facility houses more than 25 CNC machining centers, including advanced multi-axis systems to accommodate parts of nearly any size or complexity.

Horizontal 4-Axis Machining Centers

Ideal for large, complex castings that need machining on multiple faces, our horizontal 4-axis machines excel at handling deep cavities, heavy material removal, and large work envelopes with efficient tool access. These machines reduce clamping, allow greater rigidity when cutting, and help achieve faster cycle times on parts with features on more than one axis.

Horizontal 4-Axis Machining Centers
Vertical 3-Axis Machining Centers

Vertical 3-Axis Machining Centers

Our vertical 3-axis machines are great for general milling operations—slotting, pocketing, drilling, and simple contour work. They’re reliable and versatile, well suited for finishing surfaces, producing flat faces, and parts that don’t require full multi-axis contouring. They’re also often more cost-effective for simpler parts or for roughing before finishing on more complex machines.

Vertical 5-Axis Machining Centers

The vertical 5-axis machining centers allow for very complex geometries, curved surfaces, and features almost impossible with fewer axes. Because of their ability to move the tool or part in 5 directions, they use shorter tooling, which improves stability, reduces error, and provides superior surface finishes. These machines are especially useful for high-precision parts, intricate molds or dies, and components where tool access is otherwise restrictive.

Vertical 5-Axis Machining Centers
ST-35 Lathe

ST-35 Lathe

Our ST-35 lathe is used for turning operations, shaping cylindrical features, doing facing, turning diameters, and producing parts that are round. The ST-35 is great when you need precision on round or cylindrical components, such as shafts, flanges, or any part where symmetry around an axis is critical.

Industries Our Machine Shop Serves

Our machining services support clients across multiple industries, where tight tolerances, repeatability, and reliability are essential. Whether you need CNC machining for agriculture and structural components, custom machining for medical devices, robotics components built to spec, or more, Precision Enterprises is the one-stop-shop machining partner you can count on.

Client Testimonials

Dont’t take our word for it – here’s what our clients say:

We have had a wonderful partnership with the excellent people at Precision Enterprises for the past 15 years. A great team to work with and we have partnered on many projects. We look forward to the future and partnership on new business.

rICHARD l.

We have been a supplier to Precision Enterprises for over 25 Years. The managers we have worked with have always been very professional, we have had a great business relationship with all the people we have worked with over the years. They are an exceptional company to work with and I would highly recommend them and their services.

Wayne e.

I have been genuinely impressed with the team at Precision Enterprises and their extensive expertise in the casting and machining industry. From casting simulation and design support to delivering finished machined and painted products, they have truly been our partner for many years.

Nate C.

Why Choose Precision Enterprises

Take advantage of our 70 years of experience in casting and machining technology. We’re not just a machining job shop. We’re a full-service aluminum foundry and machining company under one roof.  Let us review your project and have our in-house engineering staff provide cost savings ideas; tooling, materials, alloys, tolerances, finishes…and more.

No need to worry about reshoring costs with Precision Enterprises. We’re located in the United States . Save on tariffs with us.

Faster Turnaround

With 25+ CNC machining centers, we machine 95% of our castings directly from our foundries.

Every part is inspected to meet the highest industry standards using a uniform Quality Control system that is used throughout all of our divisions.

Family-Owned

Precision Enterprises has been in business  and family-owned since 1945, and have satisfied customers worldwide with unparalleled service and expertise.

Whether you supply us a blue print, a sample, or your own cad file, our on-site engineers focus on the fit and function of your final product. 

One-Stop Shop

With 25+ CNC machines, multiple furnaces, and foundries, quality control, secondaries, and engineers all under one roof – there’s no need to go anywhere else!

Your Turnkey Machining Partner

At Precision, we don’t just machine parts. We help you hit deadlines, reduce costs, and win bids. Every part we ship is backed by 70+ years of expertise and a commitment to quality that builds trust with your clients.