PA (Nylon) Parts Manufacturing

Precision Nylon component manufacturing featuring PA6, PA66, and Glass-Filled Nylon (PA66+GF30) via CNC Machining, Injection Molding, and SLS 3D Printing. Delivering ultra-high toughness, fatigue endurance, and wear resistance with tolerances down to ±0.02 mm.

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PA (Nylon) Grade Specifications

Compare mechanical strength, heat deflection, and glass-fiber reinforcement options across engineering Nylon grades.

Technical Property	PA6 (Standard)	PA66 (High Hardness)	PA66 + 30% GF (Reinforced)
Density	1.13 g/cm³	1.14 g/cm³	1.35 g/cm³
Tensile Strength (Yield)	75 – 80 MPa	80 – 85 MPa	150 – 175 MPa
Flexural Modulus	2.8 GPa	3.0 GPa	8.5 – 9.0 GPa
Heat Deflection Temp (HDT)	70 – 80 °C	90 – 100 °C	240 – 250 °C (High Heat)
Izod Impact Strength	High (Extreme Toughness)	High	Moderate (High Stiffness)
Moisture Absorption (24h)	1.8 – 2.0%	1.3 – 1.5%	0.8 – 1.0%
Primary Application	General wear pads, rollers	Precision gears, bushings	Structural brackets, automotive housings

Surface Finishing Options for Custom Nylon Parts

Customize the surface texture, color, and mechanical toughness of your custom Nylon components.

As-Machined / Printed

Raw finish directly from CNC milling or SLS 3D printing. Natural ivory-white or black nylon finish suitable for heavy-duty hidden industrial wear components.

Hot Chemical Dyeing

Immerses white Nylon parts into specialized hot pigment baths. Infuses color deep beneath the surface layer (black, blue, red, green) without altering part dimensions.

Moisture Conditioning (Toughness Boost)

Controlled hydration process that allows machined or molded Nylon parts to reach optimal moisture equilibrium, preventing brittleness and maximizing impact resistance.

Bead Blasting & Vapor Smoothing

Strips cutter lines and 3D printing powdery textures, yielding a smooth, uniform matte satin surface for ergonomic power tool handles and automotive covers.

Ultrasonic Bath Cleaning

Multi-stage ultrasonic cleaning that thoroughly flushes cutting oils and trapped abrasive particles from complex internal oil grooves and thread holes.

Laser Marking & Serializing

Etches high-contrast part numbers, QR codes, barcode labels, and alignment marks directly onto Nylon parts for industrial traceability.

Advantages and Considerations of Nylon Manufacturing

Evaluate the mechanical strength, wear endurance, and moisture behavior of PA (Nylon) alloys.

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Advantages of PA (Nylon)

Exceptional Impact Toughness & Fatigue Endurance: Absorbs high dynamic shock loads and vibration without cracking, making it supreme for high-impact industrial machinery components.
High Abrasion Resistance & Quiet Operation: Self-lubricating wear properties reduce noise and friction against metal surfaces, vastly extending the lifespan of rollers and conveyor guides.
High Tensile Strength (Glass-Filled Options): Glass-fiber reinforced grades (PA66+30%GF) boost tensile strength to 175 MPa, allowing Nylon to replace aluminum in heavy structural housings.
Excellent Chemical & Fuel Resistance: Naturally resists oils, greases, gasoline, hydrocarbons, and organic solvents, making it a standard material in automotive engine bays.

Considerations & Limitations

Hygroscopic Moisture Absorption: Raw Nylon absorbs ambient atmospheric moisture (up to 2–8%), causing slight dimensional expansion. *(Solution: Use POM for underwater parts, or factor moisture swelling into design CAD)*.
Thermal Expansion during CNC Cutting: Higher thermal expansion rate than metals; requires sharp tools and flood coolant during precision machining to prevent thermal expansion distortion.
Susceptibility to Strong Acids: Attacked by strong mineral acids and long-term direct UV weathering without UV-stabilizing additives.

Nylon Manufacturing FAQs

1. How do I choose between PA6, PA66, and Glass-Filled Nylon (PA66+30%GF)?

PA6: Offers the highest impact resistance and dampening, ideal for shock-absorbing rollers and wear plates.
PA66: Harder with higher mechanical stiffness and lower moisture absorption, ideal for precision sliding bushings and drive gears.
PA66+30%GF: Reinforced with 30% glass fibers to vastly boost tensile strength (up to 175 MPa) and heat resistance (HDT up to 250°C), perfect for replacing aluminum structural brackets.

2. How does moisture absorption affect custom machined Nylon components?

Unreinforced Nylon naturally absorbs ambient humidity (1.5% to 3%), which slightly increases part dimensions (approx. 0.2% linear growth per 1% moisture) while increasing impact toughness. For submerged high-precision fittings, we recommend factoring growth into the CAD design or selecting POM (Delrin) instead.

3. What manufacturing process is best for Nylon parts (CNC vs SLS 3D Printing vs Injection Molding)?

CNC Machining: Best for 1–500 low-volume parts requiring maximum material density, tight tolerances (±0.02 mm), and heavy wall thicknesses.
SLS 3D Printing (Nylon PA12): Ideal for complex hollow geometries without support structures.
Injection Molding: Best for high-volume mass production (1,000+ parts).

4. Can custom Nylon parts be colored or painted?

Yes! White or natural Nylon parts excel at accepting hot chemical pigment dyeing, which penetrates the plastic surface to produce permanent black, blue, or red colors without peeling or chipping during heavy wear.

5. What file formats are required for an instant custom Nylon quote?

Please upload your 3D CAD files in STEP (.stp / .step), IGES (.igs), or SolidWorks (.sldprt) format. For custom thread callouts, glass-fiber percentage requirements, or critical assembly tolerances, please also attach a 2D PDF drawing.