Screw and nut

Name: YEH DER ENTERPRISE
Address: 5F.,No.12,Sec. 1,Jhongsing Rd.,Wugu Dist, New Taipei City, Taiwan, 24872, Taiwan
Telephone: +886-2-89769456
Price range: $$$

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Specifications

Product Category: Precision Linear Motion Components
Assembly Configuration: Mated pair consisting of a linear drive lead screw and an actuating nut
Materials:
Lead Screw: High-strength Engineering Nylon PA66 (Optional Glass-Filled grade for bending stiffness)
Mating Nut: Low-friction Wear-resistant POM (Polyoxymethylene / Acetal)
Thread Profiles: Trapezoidal (Tr / ACME), high-lead multi-start threads, or custom precision thread profiles
Primary Function: Converts rotary torque from the sunshade drive motor into smooth bidirectional linear travel to extend and retract vehicle window shades
Applications: Automotive Power Side-Window Sunshades, Rear-Window Power Sunblinds, Panoramic Sunroof Electric Roller Blinds

Manufacturing Processes & Capabilities

Dissimilar Polymer Pairing & Tooling Precision: Pairs high-rigidity PA66 screws with self-lubricating POM nuts to eliminate friction galling and localized wear; actuating nuts are produced via automatic rotary core unscrewing to achieve seamless, burr-free internal threads.
Straightness & Lead Accuracy Control: Slender screw molding utilizes balanced gating and cooling fixtures to maintain strict overall straightness and minimal lead cumulative error; controls thread clearance for wobble-free, non-binding linear travel.

Features & Advantages

Smooth Linear Travel & Cabin Noise Reduction: The PA66/POM polymer interface provides natural vibration damping and low friction, eliminating stick-slip behavior and operational whine to satisfy automotive cabin acoustic standards.
Automotive Extreme-Temperature Stability: Molded from automotive-grade engineering resins that withstand wide operating temperatures (-40°C to +85°C) and solar radiation, preventing thermal expansion binding or brittle cracking.
Self-Lubricating & Fabric-Safe Clean Operation: Natural polymer lubricity allows reliable, maintenance-free performance under dry or minimal-grease conditions, preventing grease migration and fabric staining on vehicle interior sunshade textiles.