Precision Hydraulic and Mobile Fluid Power Components
As an AS9100D and ISO 9001:2015 certified manufacturer with over 50 years of engineering excellence, DuPage Machine Products stands as a global leader in precision contract machining for the hydraulics and fluid power sectors. Operating out of our 245,000 sq. ft. state-of-the-art facility equipped with over 150 high-performance CNC multi-spindle and rotary transfer machining centers, we serve major Fortune 500 OEMs and international fluid power equipment integrators across North America, Europe, and Asia.
Hydraulic systems demand zero-leak integrity, extreme pressure resistance, and micrometric dimensional consistency. Our in-house engineering team collaborates directly with overseas procurement managers and design engineers to optimize components for volume production, ensuring maximum structural integrity and cost efficiency without compromising technical specifications.
Comprehensive Range of Hydraulic Cartridge Valve Bodies & Components
Our production capabilities encompass a full spectrum of complex turned and milled hydraulic parts. Utilizing high-speed multi-spindle CNC turning and precision rotary transfer systems, we produce intricate internal cavities, cross-drilled ports, threads, and high-finish valve seats in a single process setup:
- Hydraulic Cartridge Valve Bodies: Precision-machined housings for pressure-control, directional control, load-holding, proportional, and solenoid valve applications.
- Custom Hydraulic Manifolds & Blocks: Compact, multi-port hydraulic distribution blocks designed for high-pressure mobile and industrial machinery.
- Valve Spools & Poppets: Micro-ground internal valve spools requiring extreme cylindrical concentricity, ultra-smooth micro-inch surface finishes, and burr-free port crossings.
- High-Pressure Fittings & Adaptors: Custom fluid connectors engineered to withstand high burst pressures and severe vibration environments.
Advanced Material Versatility & Processing Standards
Fluid power components operate under severe fatigue conditions. We maintain robust supply chains for certified raw materials and process diverse alloys tailored to your hydraulic system fluid types and operating pressure limits:
Raw Material Standards
Full material traceability for Ductile Iron (65-45-12), Carbon Steels (12L14, 11SMn30, 4140), Stainless Steels (303, 304, 316, 17-4 PH), Aluminum Alloys (6061-T6, 7075-T6), and High-Tensile Brass.
Secondary Operations & Finishing
In-house precision thermal deburring (TEM), ultrasonic component cleaning, high-pressure flushing, surface plating (Zinc-Nickel, Electroless Nickel), and heat-treating for maximum wear resistance.
Global Quality Control & Contamination Management
Fluid contamination is the primary cause of hydraulic system failure. DuPage Machine Products enforces strict particulate contamination control standards. Every production batch undergoes automated CMM dimensional testing, surface roughness measurement (Ra/Rz), and cleanroom ultrasonic washing to satisfy ISO 4406 cleanliness codes prior to export packaging.
