Our Products
Our Brands
Markets
Capabilities
About Pexco
Pexco Capabilities
Precision Machining
Where Ideas Take Shape
Pexco’s precision machining capabilities transform high-performance plastic materials into complex components with tight tolerances for aerospace, medical, semiconductor, and industrial applications. With over 40 CNC machines including 3-, 4-, and 5-axis mills, multi-axis mill-turns, and Swiss turning equipment, we machine components from micro-scale parts to 20-inch diameter turned components. Our temperature-controlled facilities and expertise in machining challenging materials like PEEK, Torlon, PFA, and filled compounds enable us to achieve exceptional surface finishes and dimensional accuracy.
From prototype to production, our machining services complement our molding and extrusion capabilities to deliver complete manufacturing solutions including secondary operations, stress relieving, and advanced surface finishing techniques like vapor polishing for optical-clarity applications.
CNC Milling
We operate 3-, 4-, and 5-axis CNC milling equipment capable of producing complex geometries with tight tolerances from solid stock, castings, or molded components. Three-axis milling handles straightforward prismatic parts efficiently, while 4-axis capabilities add rotary indexing for features around cylindrical components. Five-axis simultaneous machining enables complex contoured surfaces and compound angles in a single setup, eliminating multiple repositioning operations.
Our temperature-controlled machining environment proves critical when working with thermoplastics that expand and contract with thermal variation. Vision coordinate measuring machines (CMM) and toolmaker microscopes provide precision measurement throughout the process, while advanced CAD/CAM software integration allows direct import of customer files for seamless programming and rapid prototype-to-production transitions.
CNC Turning & Swiss Machining
Our CNC turning capabilities range from micro-machining of miniature components to large-diameter parts up to 20 inches, utilizing multi-axis mill-turn equipment with sub-spindles and live tooling. With over 40 CNC turning and Swiss machining centers, we efficiently handle both prototype quantities and production volumes.
Key Capabilities
- Complete part production in a single setup incorporating turned features, cross-holes, slots, and complex geometries
- Multi-axis mill-turns with live tooling eliminate secondary operations
- Sub-spindles enable front and back machining without repositioning
Swiss Machining: Swiss-type CNC machines excel at producing small-diameter precision components with exceptional accuracy and surface finish. The Swiss turning process supports the workpiece very close to the cutting tool, minimizing deflection and enabling tight tolerances on slender parts that would be impractical with conventional turning. Particularly valuable for medical device components, connectors, and instrumentation parts requiring multiple features machined to close tolerances in a single operation.
Surface Finishing & Treatment
High-performance plastic components often require specialized surface finishing and heat treatment processes to achieve optimal performance:
Vapor Polishing
Creates optically clear, defect-free surfaces on transparent and translucent plastics by briefly exposing machined parts to solvent vapor that smooths surface irregularities at the molecular level. Eliminates machining marks and achieves glass-like clarity without dimensional changes, ideal for optical components, medical devices, and high-visibility applications.
Annealing and Stress Relieving
Remove internal stresses introduced during machining, preventing dimensional instability, cracking, or warpage in service. Our controlled thermal processing optimizes material properties and dimensional stability, particularly important for precision components operating in demanding thermal environments or requiring long-term dimensional consistency.
Additional Finishing Options
Flame polishing, mechanical buffing, and surface texturing to meet specific functional or aesthetic requirements.
Materials & Resins
Pexco machines a comprehensive range of high-performance plastics:
Imidized Polymers
PAI (Torlon), Vespel (Polyimide), PBI – For extreme temperature and wear resistance
Advanced Fluoropolymers
PTFE, FEP, PFA, PVDF, ETFE – For chemical resistance and low-friction applications
Advanced Thermoplastics
PEEK, PEI (Ultem), PSU (Polysulfone), PPS (Ryton), EXTEM – For structural components requiring high strength and thermal stability
Filled Materials
Glass-filled, carbon-filled, mineral-filled compounds – For enhanced dimensional stability and mechanical properties
Commodity Engineering Plastics
Nylon, Acetal, Polycarbonate, Acrylic – For cost-effective precision components
Why Choose Pexco?
40+ CNC milling, turning, and Swiss machining centers
3-, 4-, and 5-axis milling for complex geometries
Multi-axis mill-turns with live tooling and sub-spindles
Swiss machining for micro to precision-diameter components
Turning capacity from micro-scale to 20-inch diameter
Temperature-controlled machining environments
Vision CMM and toolmaker microscope measurement systems
Vapor polishing for optical-clarity surface finishes
Annealing and stress-relieving heat treatment capabilities
ISO 9001:2015 and ISO 13485:2016 certified
Expertise machining challenging high-performance plastics
CAD/CAM integration for rapid prototype-to-production
Secondary operations complementing molding and extrusion services
Get Started
Contact Pexco’s precision machining team to discuss your component requirements and machining specifications.