YJCNC Precision Machining

Engineering Plastic Machining

YJCNC machines engineering thermoplastics and technical plastics into dimensionally stable components for industrial, medical, electronics, and automation applications. From prototype parts to repeat production runs, we work from your drawings and specifications to deliver consistent, fit-ready plastic components.

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Why Machine Engineering Plastics

Light weight with strong mechanical performance
Corrosion, chemical, and moisture resistance
Electrical insulation and low friction properties
Suitable for food-contact and medical-grade applications, subject to material selection

Engineering Plastics We Machine

We select the right resin for each application based on load, temperature, wear, chemical exposure, and dimensional stability requirements.

POM (Acetal / Delrin)

High stiffness, low friction, and excellent machinability for gears, bushings, and precision mechanical parts.

PA (Nylon)

Good toughness and wear resistance for rollers, wear pads, and structural components.

PEEK

High-performance thermoplastic for demanding thermal, chemical, and mechanical environments.

PTFE (Teflon)

Very low friction and broad chemical resistance for seals, insulators, and sliding components.

UHMW-PE

Exceptional impact and abrasion resistance for liners, guides, and wear components.

PC, PMMA, and ABS

Transparent and impact-resistant options for housings, covers, prototypes, and enclosures.

Machining Processes for Plastic Parts

Our CNC equipment covers milling, turning, turn-mill, and Swiss-type machining, allowing us to match each plastic component to the most efficient process.

CNC Milling

Plates, housings, brackets, and multi-sided plastic components.

CNC Turning

Rods, sleeves, bushings, and rotational parts in engineering plastics.

Turn-Mill Machining

Combined turning and milling features completed in a single setup.

Swiss-Type Machining

Slender and small-diameter plastic components requiring tight control.

Design Guidance for Machined Plastics

Plastics behave differently from metals. Thermal expansion, moisture absorption, and internal stress all affect final dimensions. Our team reviews your design early to help improve manufacturability and dimensional consistency.

Wall thickness and feature spacing suited to the selected resin
Realistic tolerance selection for plastic materials
Stress relief and fixturing strategies to reduce distortion
Surface finish and edge treatment requirements

Quality Verification

Inspection is planned around your drawing. We use coordinate measuring, optical measuring, and precision dimensional gauges to verify critical features and provide inspection support for drawing-based quality requirements.

CMM Inspection

3D dimensional and geometric checks

Optical Measurement

Profile, hole position, and feature measurement

Surface Roughness

Surface finish verification

Precision Gauging

Calipers, micrometers, and pin gauges