Precision OEM Manufacturing

Machining Expertise

High-Volume Custom Precision Machining Solutions for Global Industrial Supply Chains

Precise Machining Delivers Superior Quality Products

At DuPage Machine Products, we combine over 50 years of engineering heritage with a relentless pursuit of manufacturing innovation. Operating from our 245,000 sq. ft. climate-controlled facility equipped with more than 150 high-precision machines, we supply global OEM purchasing leaders and component engineers with defect-free turned parts.

  • Tight Tolerances down to ±0.0002" (±0.005 mm)
  • AS9100D & ISO 9001:2015 Quality Management Systems
  • High-Speed CNC Multi-Spindle & Swiss Production
  • Complete Material Traceability & Full PPAP Capability
Advanced precision CNC machining equipment at DuPage Machine Products

We firmly believe in the strength of world-class precision manufacturing and are dedicated to empowering economic growth for our international trade partners. American manufacturing excellence is at the core of DuPage Machine Products—ranging from certified raw material suppliers and carbide tooling developers to highly trained CNC technicians and quality control inspectors. Our comprehensive technical mentoring programs ensure every custom machining assignment is engineered, executed, and validated by skilled specialists who understand rigorous international engineering standards.

Core Pillars of Machining Excellence

Our integrated infrastructure allows us to take complex part prints from design verification to full-scale mass production smoothly and cost-effectively.

Manufacturing Equipment

Over 150 high-performance CNC multi-spindle, Swiss single-spindle, and rotary transfer machines operating around the clock to meet demanding delivery timelines.

CAD/CAM Software

Seamless 3D CAD/CAM integration with DFM (Design for Manufacturability) analysis to optimize cycle times, eliminate tool interference, and maximize part accuracy.

Quality Assurance

AS9100D and ISO 9001:2015 certified quality systems featuring automated CMM measurement, optical comparators, and zero-defect statistical process control (SPC).

Tool Manufacturing

In-house custom tooling design and micro-grinding capabilities that ensure rapid setup turnarounds, precise contour machining, and extended production runs.

Technical Specifications & Capabilities

We support overseas buyers with full technical clarity, offering broad material processing options and strict tolerance controls.

Machining Technologies CNC Multi-Spindle, Swiss CNC Single Spindle, CNC Rotary Transfer, CAM Multi-Spindle, Robotic Welding
Machining Tolerances Standard down to ±0.0002" (±0.005 mm) with precision micro-dimensional repeatability
Materials Processed Stainless Steel (303, 304, 316, 17-4PH), Alloy Steel, Carbon Steel, Aluminum Alloys (6061-T6, 7075), Brass, Bronze, Copper, Titanium, High-Temp Alloys
Bar Stock Capacity Diameter range from 0.125" (3.17 mm) to over 2.50" (63.5 mm)
Production Volume High-Volume Contract Machining, Mass OEM Production (10,000 to 1,000,000+ units)
Quality Certifications AS9100D (Aerospace Standard), ISO 9001:2015, RoHS & REACH Compliant Manufacturing
Secondary & Value-Added Services Precision Part Cleaning, Contract Assembly, Heat Treating, Anodizing, Plating, Ultrasonic Washing, Custom Packaging

Why Overseas Purchasing Managers Choose DuPage

Navigating international supply chains requires a reliable contract manufacturing partner with proven capacity, financial stability, and zero compromise on quality standards.

Reliable Export Shipping

Proven international shipping logistics, export-compliant packaging, and seamless customs documentation for smooth global deliveries.

Scale & Capacity

Our 245,000 sq. ft. facility provides high-volume production output with pre-allocated machine capacity for scaling future customer demand.

Engineering DFM Support

Our technical team collaborates directly with your engineering department to optimize part geometry, reducing piece price without sacrificing performance.

Ready to Request a Quote for Precision Components?

Connect with our engineering and sales experts today to review your CAD drawings, discuss material specifications, or evaluate cost-effective high-volume contract machining options.

Send an Inquiry
AS9100D Aerospace Quality Management System Certification

AS9100D Certified

Aerospace Quality
Management System

ISO 9001:2015 Quality Management System Certification

ISO 9001:2015 Certified

Quality Management
System Standard

PMPA - Precision Machined Products Association Member

PMPA Member

Precision Machined
Products Association