Nylon 6 (PA6)

Nylon 6 (PA6), primarily produced as Cast Nylon, is the material of choice for large-scale engineering components requiring extreme toughness and impact absorption. It offers a unique combination of high mechanical strength and exceptional damping capacity, making it a superior lightweight replacement for bronze or steel in gears and wear parts. Jucheng Precision specializes in the large-format CNC machining of Nylon 6, utilizing high-torque gantry mills and specialized moisture-conditioning protocols. Our expertise in managing the hygroscopic behavior of PA6 ensures that your oversized industrial rollers, sheaves, and structural pads are delivered with precise dimensions and the durability to survive the most demanding heavy-industry environments.

Back to Materials Get a Quote
Nylon 6 Machining

Nylon (Polyamide) Material Variants

Grade Common Name Key Characteristics Typical Applications
Nylon 6 (PA6) Cast Nylon Highest impact strength and damping capacity. Available in large cast shapes with low internal stress. Large gears, wear pads, sheaves, rollers, industrial buffers.
Nylon 6/6 (PA66) Extruded Nylon Higher mechanical strength, stiffness, and heat resistance than PA6. Lower moisture absorption. Automotive engine parts, electrical insulators, high-load bearings.
Nylon 12 (PA12) Low-Moisture Nylon Lowest water absorption of all nylons. Exceptional dimensional stability and chemical resistance. Precision gears, fuel lines, hydraulic seals, outdoor housings.

Nylon 6 Machining Capabilities

Capability Technical Description Jucheng Advantage
Large-Scale Component Milling Machining oversized Nylon 6 cast blocks into heavy-duty industrial sheaves and rollers. Our large-travel gantry CNC mills can process Nylon 6 parts up to 2 meters, maintaining structural integrity across massive geometries.
Precision Gear Hobbing Generating large-module plastic gears that replace metal for noise reduction and impact absorption. We achieve high AGMA gear grades with optimized tooth profiles, ensuring quiet operation and excellent wear life in heavy machinery.
Heavy-Wall Boring Drilling and boring thick-walled Nylon 6 bushings with high straightness and diameter consistency. Our specialized tool geometries prevent “thermal wrapping,” ensuring internal dimensions remain precise after the part cools.
Post-Machining Conditioning Managing the moisture content of machined Nylon 6 parts to ensure fitment in the final assembly environment. Jucheng provides moisture-stabilization services, preventing the “swelling” issues common when Nylon 6 is moved from dry to humid climates.

Fabrication Guidelines for Nylon 6 (PA6)

Hygroscopic Nature:
Nylon 6 absorbs significant moisture, which causes dimensional growth (up to 3%). Tip: For precision parts, we account for this “swelling factor” during the machining phase based on the intended operating environment.

Heat Management:
Nylon 6 has a lower melting point than high-performance plastics. Tip: We use sharp, high-rake carbide tools and high-volume air or liquid cooling to prevent the material from melting and gumming up the cutter.

Stress Relief:
While cast Nylon 6 has lower stress than extruded grades, heavy material removal can still cause movement. Tip: We utilize roughing and finishing passes with a “resting” period to ensure final dimensions are stable.

Deburring Strategy:
Nylon is tough; burrs tend to “fold” rather than break. Tip: We use specialized high-speed deburring tools or cryogenic treatment to achieve the clean, crisp edges required for industrial components.

Primary Applications

Heavy Industrial Machinery
Sheaves, pulleys, and rollers for cranes and conveyors where high impact resistance and low cable wear are required.

Material Handling
Wear pads, guide plates, and star wheels for bottling and packaging lines requiring high abrasion resistance and noise damping.

Automotive & Transport
Bushings, fuel tank supports, and structural brackets that benefit from the material’s vibration-dampening properties.

Mining & Construction
Large-scale wear liners and gears that must withstand shock loads and harsh abrasive debris without cracking.

Properties

Density 1.15 g/cm³
Tensile Strength 75 - 85 MPa
Elastic Modulus 3.0 - 3.5 GPa
Hardness 115 Rockwell R
Impact Strength 60 - 100 J/m
Continuous Service Temp 100 - 110 °C
Water Absorption 7.0 - 8.5%
Coefficient of Friction 0.25 - 0.35
Dielectric Strength 15 - 20 kV/mm
Machinability Rating Good
Max Part Size 2000 x 800 x 600 mm