Mechanical Strength
PA6 and PA66 offer high tensile and compressive strength for power transmission components, spacers and structural elements that carry steady loads.
OEM CNC Machining Nylon Parts in China
We provide OEM CNC machining nylon parts in China for original equipment manufacturers, machine builders, maintenance teams and replacement-part programs around the world. Every batch of custom CNC machined PA in China is produced directly from customer drawings, supplied samples or 3D models, using extruded, cast and filled polyamide stock selected for the working conditions of the part.
Nylon — known chemically as polyamide and abbreviated as PA — combines mechanical strength, sliding wear resistance, impact toughness and noise damping. It is a proven replacement for bronze, brass, cast iron and mild steel in gears, bushings, sheaves, rollers, wear pads and guide components, while reducing component weight and protecting mating metal surfaces.
Why Nylon (Polyamide / PA) Is Chosen for Machined Parts
Polyamide is one of the most widely used engineering thermoplastics for moving and load-carrying components. The combination of properties below explains why buyers specify custom CNC machined PA in China for wear parts that would otherwise be made from metal.
Wear and Abrasion Resistance
A low coefficient of friction and high abrasion resistance extend service life in sliding, pivoting and repeatedly rotating applications.
Self-Lubricating Behavior
Natural lubricity allows many nylon parts to run dry without added grease, which is valuable in clean, dusty or hard-to-reach positions.
Impact and Fatigue Toughness
Nylon absorbs repeated shock and cyclic loading, making it suitable for gears, couplings and cam followers exposed to intermittent impacts.
Noise and Vibration Damping
Nylon gears and rollers mesh more quietly than steel and dampen vibration, producing smoother, lower-noise machine operation.
Chemical and Corrosion Resistance
Polyamide withstands oils, greases, fuels, many solvents and humid environments, so it does not rust or require protective surface coating.
Low Weight and Inertia
With roughly one eighth the density of steel, nylon parts reduce moving mass, start-up inertia and energy consumption in driven assemblies.
Electrical Insulation
Good dielectric performance makes machined PA suitable for insulators, fixtures and support parts in electrical and electronic equipment.
Polyamide Grades Routinely CNC Machined in Our Workshop
Choosing the correct PA grade is the first step in a stable custom CNC machined PA in China project. The six material families below cover the majority of industrial nylon components, from quiet light-load gears to large cast wear plates.
PA6 (Extruded Nylon 6)
Balanced strength, toughness and damping with straightforward machinability. Used for general-purpose gears, rollers, levers, spacers and machine structural parts.
PA66 (Nylon 6/6)
A harder, higher-melting grade with improved wear resistance and stiffness. Selected for more heavily loaded components and positions that run warmer.
PA6G / MC Cast Nylon
Monomer-cast nylon produced in large plates, rods and tubes with low internal stress. Ideal for large gears, sheaves, pulleys, wear plates and heavy-duty bushes.
PA12
Among the common nylons, PA12 absorbs the least moisture and holds dimensions well. Suited to precision parts, thin walls and components exposed to humidity.
Glass-Filled PA (GF15 to GF30)
Glass fiber reinforcement raises stiffness, creep resistance and load capacity. Used for brackets, housings, seats and structural parts under sustained load.
MoS2 and Oil-Filled Wear Grades
Solid lubricant fillers lower friction further for maintenance-free bearings, guide strips, slider blocks and long-life sliding surfaces.
National Designation Systems and Commercial Nylon Brand Names
Drawings and purchase specifications from different markets label polyamide in different ways. The tables below map the main national designation systems and list the commercial trade names buyers often print on drawings, so the correct generic PA grade can be identified and machined.
Polyamide Designation Systems Used in Different Markets
| Market / Region | Material Designation Standard | How the Grade Is Identified | Typical Notation |
|---|---|---|---|
| International | ISO 16396-1 (successor to ISO 1874-1) | Base polymer followed by data blocks for fillers, reinforcement and special properties. | PA6, PA66, PA6-GF30 |
| China | GB/T 32363.1 (based on ISO 1874-1) | Chinese national standard using the same base-polymer and data-block structure. | PA6, PA66, GF reinforced grades |
| United States | ASTM D4066 | Group, class and grade coding system for nylon injection and extrusion materials. | Group 01 (PA66) coded grades |
| Europe | EN ISO 16396-1 | European adoption of the ISO designation and data-block logic. | PA66-GF30, PA12 |
| Japan | JIS K 6920-1 | Japanese designation aligned with the ISO structure for moulding and extrusion PA. | PA6, PA66 grade series |
Commercial Trade Names for Equivalent Nylon Stock Shapes
| Base Material | Commonly Seen Commercial / Stock-Shape Trade Names | Typical Machined Application |
|---|---|---|
| PA6 extruded | Akulon, Ultramid B, Durethan B, Technyl, Ertalon 6 SA, TECAMID 6, Sustamid 6, Grilon, Zellamid 202 | General gears, rollers, levers and machine components. |
| PA66 | Zytel, Nylon 101, Ultramid A, Durethan A, Technyl A, TECAMID 66, Sustamid 66 | Higher-strength wear parts and warmer running positions. |
| PA6G / MC cast nylon | Ertalon 6 PLA, Nylatron MC901 / Nylatron M, Sustamid 6G, TECAST T, Nycast, Vekton, Nylacast, Monocast | Large-diameter gears, sheaves, wear plates and heavy bushes. |
| PA12 | VESTAMID, Grilamid, Rilsamid, TECAMID 12 | Dimensionally stable precision and thin-wall parts. |
| PA11 | Rilsan | Flexible, impact-resistant and special-environment parts. |
| MoS2-filled nylon | Nylatron GS, Nylatron GSM, TECAMID MD | Bearings, sliding blocks and low-friction guides. |
| Oil-filled nylon | NYLOIL, Nylatron LIG / LFX, Sustamid 6G OL, TECAST L, OILON | Maintenance-free bushes and long-life sliding surfaces. |
| Glass-reinforced nylon | Ultramid GF, Akulon GF, TECAMID GF, Zytel GF series | Stiff, creep-resistant load-bearing structural parts. |
Trade names remain the property of their respective owners. They are listed as a purchasing and material cross-reference aid; equivalent generic PA grades can be machined from either customer-designated stock or locally sourced equivalents.
Custom CNC Machining Capabilities for Nylon Parts
Each order of OEM CNC machining nylon parts in China is routed through the combination of processes below. Cutting speeds, feed rates, tool geometry and clamping methods are adjusted specifically for polyamide rather than being copied from metal machining practice.
CNC Milling of Nylon
Three-axis milling of plates and blocks into pockets, slots, gear tooth profiles, cam contours, guide grooves and complex curved surfaces.
CNC Turning of Nylon
Turned sleeves, bushings, rollers, pulleys, sealing rings and thin-wall rings machined from nylon rod, tube and cast billet.
Combined Milling and Turning
Linked operations handle eccentric features, cross-drilled holes, flats and grooves in one setup to preserve concentricity.
Stock Preparation and Cutting
Sawing, squaring and facing of nylon sheet, rod and tube in natural, black and colored stock before finish machining.
Prototypes to Repeat Batches
Single replacement parts and engineering samples move through the same workflow as scheduled OEM production batches.
Deburring and Finishing
Edge breaking, chamfering, tumbling, tapping, thread chasing and surface cleanup are completed to drawing requirements.
Typical Custom CNC Machined Nylon Products
A small selection of polyamide components produced for transmission, positioning and motion-control applications.
Nylon Machining Process and Dimensional Inspection
Custom CNC machined PA in China is only reliable when machining and inspection are treated as one workflow. The process views below show the production floor, followed by the dimensional checks applied before parts are released for packing.
Dimensional Inspection
Calibrated calipers, outside and inside micrometers, height gauges and bore gauges verify diameter, length, bore and wall thickness.
Geometric Control
Runout, concentricity, parallelism and flatness are checked on turned and milled surfaces that mate with metal assemblies.
Thread and Fit Checks
Thread gauges and fit trials confirm tapped holes, pressed inserts and clearance fits before the batch continues.
Batch Consistency
First-article inspection, in-process spot checks and final recorded measurements keep repeat OEM batches consistent.
Industries and Equipment Using Machined Nylon Components
OEM CNC machining nylon parts in China serves any machine that needs lightweight, quiet and wear-resistant moving elements. The eight fields below account for most repeat orders.
Material Handling and Conveying
Sprockets, guide rails, wear strips, chain guides, idler rollers and side guides for conveyor systems.
Food and Packaging Machinery
Star wheels, timing screws, change parts, format components, feed screws and non-marking guide elements.
Textile Machinery
Gears, cams, thread guides, tension levers, bobbin parts and quiet drive components for high-cycle motion.
Automotive and Transport
Bushings, spacers, wear pads, sliders, clips and cable-management parts in interiors and assemblies.
Agricultural and Construction Equipment
Sheaves, slider blocks, support pads and corrosion-free replacement parts for outdoor machinery.
Pumps, Valves and Fluid Equipment
Valve seats, impellers, sealing rings, manifolds, spacer rings and low-friction actuation components.
Medical and Laboratory Equipment
Instrument fixtures, housings, adjustment knobs, non-marking supports and custom mechanism components.
Electronics and Automation
Insulators, test jigs, sockets, sensor mounts, machine guard parts and lightweight motion components.
Design and Machining Considerations for Nylon Parts
Polyamide behaves differently from metal during cutting and in service. Reviewing the points below at the drawing stage helps every custom CNC machined PA in China order hold predictable dimensions and fit.
Moisture Absorption
Nylon absorbs moisture from the air, so dimensions are typically controlled in the as-machined condition and the expected equilibrium state is discussed with the drawing.
Thermal Expansion
The coefficient of thermal expansion is higher than metal; running clearances are planned around the real operating temperature range.
Tolerance Strategy
Achievable tolerances depend on grade, section size and wall thickness; critical mating dimensions are separated from general dimensions on the drawing.
Clamping Without Deformation
Soft jaws, controlled fixture pressure and balanced support prevent thin walls and large plates from springing during machining.
Tool Geometry and Chip Control
Sharp polished tools, suitable spindle speeds and reliable chip evacuation avoid heat buildup, melted edges and gummy cuts.
Stress Relief Between Cuts
Thick and cast sections are rough-machined first and allowed to rest before finishing, which stabilizes final dimensions.
Why Buyers Source OEM CNC Machining Nylon Parts in China
A polymer-focused Chinese machining workshop combines ready access to a wide range of PA stock shapes with flexible production quantities and export-oriented drawing communication.
Broad Material Availability
PA6, PA66, cast PA6G / MC nylon, PA12, glass-filled and solid-lubricant grades are available as rod, plate, sheet and tube across many sizes and colors.
Flexible Order Quantities
A single broken replacement gear, a ten-piece engineering trial and a scheduled batch of identical OEM parts can all be produced on the same process basis.
Polymer-Specific Machining Know-How
Feeds, speeds, tool sharpness and fixturing are chosen for thermoplastics, avoiding the thermal damage and clamping distortion common in metal-oriented shops.
Export-Ready Drawing Workflow
Drawings are reviewed in both metric and imperial units, neutral 3D formats are accepted, and grade and tolerance questions are resolved before cutting starts.
Frequently Asked Questions About Custom CNC Machined PA in China
What information is needed to quote a nylon part?
A dimensioned 2D PDF with tolerances, a 3D model in STEP, IGES or X_T format, the PA grade and color, the required quantity and any post-machining or packaging requirements.
Which nylon grade should be selected?
PA6 for general use, PA66 for higher strength and warmth resistance, cast PA6G for large wear parts, PA12 for dimensional stability and filled grades for self-lubrication or extra stiffness.
What tolerances can machined nylon hold?
Polyamide moves with temperature and moisture, so tolerances differ from metal practice. A realistic tolerance proposal is prepared per drawing after grade and cross-section review.
Can a named commercial grade be machined?
Yes. A customer-designated trade name or customer-supplied stock can be used, and the cross-reference tables above help identify an equivalent generic PA grade when needed.
Is nylon suitable for gears?
Yes. Nylon gears run quietly, absorb shock and reduce wear on meshing metal gears, often operating without external lubrication in light and medium drives.
Can a prototype be made before batch production?
Yes. First-article samples can be machined for assembly fit and function checks, after which the setup is retained for consistent repeat batches.
Polyamide Components Built Around Your Drawings
From a single replacement nylon gear to repeat OEM batches of sleeves, bushings, Geneva wheels and custom wear components, OEM CNC machining nylon parts in China combines the right PA grade, polymer-specific machining and careful dimensional control. Send a dimensioned drawing and a 3D model to review any project for custom CNC machined PA in China, including grade selection across PA6, PA66, cast PA6G, PA12 and filled polyamide families.
We provide custom machined parts, 5-axis linkage CNC machining, and the design, production, and assembly of machinery and equipment.