Commercial Automotive Precision Machining
High-volume OEM contract manufacturing of turned components for commercial vehicles, engines, braking systems, and powertrain assemblies.
Precision OEM Machined Parts for Commercial Vehicles
For over 50 years, DuPage Machine Products has been a trusted global contract manufacturer of high-precision turned components for commercial automotive, heavy truck, and transportation equipment OEMs.
Commercial vehicles operate under rigorous conditions that demand maximum durability, strict dimensional integrity, and zero failure rates. Utilizing our state-of-the-art 245,000 sq. ft. facility equipped with over 150 high-end CNC machines, we mass-produce complex metal parts engineered to withstand extreme stress, pressure, and thermal fluctuations.
Certifications
ISO 9001:2015 & AS9100D Certified; IATF Compliant Systems
Production Scale
High-Volume Production Runs (10,000 to 1,000,000+ pcs)
Tolerances
Micro-Tolerances down to ±0.0002" (±0.005 mm)
Machining Fleet
150+ CNC Multi-Spindle, Swiss & Rotary Transfer Machines
Key Automotive Components We Manufacture
Our automated machining cells and multi-axis turning equipment deliver unparalleled consistency across a broad spectrum of commercial transportation applications:
Engine & Drivetrain Parts
Precision-machined bushings, valve train components, shafts, pinions, and custom transmission fittings built for heavy-duty torque and continuous operational cycles.
Braking & Chassis Assemblies
Critical brake caliper pins, hydraulic pistons, air brake fittings, and suspension spacers engineered to meet stringent safety standards and fatigue resistance requirements.
Fuel Delivery Systems
High-precision fuel injection nozzles, valve seats, sensor housings, and manifold connectors requiring ultra-smooth surface finishes and tight leak-proof tolerances.
Materials & Secondary Operations
We work with an extensive selection of certified automotive-grade metals and alloys, tailored to your engineering drawing requirements:
Beyond primary CNC turning, DuPage Machine Products offers complete full-service solutions including robotic welding, heat treating, centerless grinding, precision part washing, optical sorting, and sub-assembly operations to deliver finished components directly to your assembly line.
Why Global Buyers Partner With DuPage
World-class engineering expertise, rigorous quality control, and robust global supply chain support.
PPAP Level 3 & Traceability
Full APQP documentation, PPAP submissions, material heat lot traceability, and full CMM inspection reports provided to ensure total compliance with international automotive standards.
Unrivaled Capacity & On-Time Delivery
With over 150 production machines operating in our climate-controlled plant, we offer massive volume scalability, rapid turnaround times, and reliable JIT delivery for international procurement managers.
In-House Tooling & DFM Engineering
Our dedicated tooling team and experienced manufacturing engineers assist with Design for Manufacturability (DFM), optimizing component geometry to reduce cycle times and lower overall unit cost.
Total Cost Optimization
High-efficiency multi-spindle and rotary transfer platforms allow us to produce complex turned parts with unmatched cost efficiency, making DuPage your ideal long-term contract manufacturing partner.
AS9100D Certified
Aerospace Quality
Management System
ISO 9001:2015 Certified
Quality Management
System Standard
PMPA Member
Precision Machined
Products Association