Precision Dual-Thread Lead Screw Nut

Specifications

• Product Category: Precision Linear Motion & Fastening Components
• Material: Delrin / PA66-70G33 (33% Glass-Filled High-Rigidity Engineering Nylon)
• Dimensions: Custom ODM Manufacturing (Built to customer prints)
• Weight: Custom ODM Specification
• Structural Features:
  Internal: Precision lead screw nut thread (Trapezoidal Tr / ACME or custom lead screw profiles)
  External: High-strength external fastening thread for rigid coupling with external metal tubes/housings
• Primary Function: Serves as a rigid coaxial adapter connecting metal tubes and internal lead screws, converting rotational torque into smooth, guided linear push-pull motion
• Applications: Automotive Power Tailgate Actuators, Power Seat Adjusters, Electric Lifting Columns, Miniature Electric Cylinders, Medical Bed Linear Drives

Manufacturing Processes & Capabilities

• Integrated Dual-Thread Tooling: Molds internal lead threads and external fastening threads in a single shot utilizing automated rotary core-unscrewing systems, producing seamless, burr-free thread flanks.
• Strict Coaxiality & Shrinkage Control: Advanced mold flow optimization compensates for 33% glass fiber shrinkage anisotropy, maintaining strict coaxial alignment between internal and external thread axes to prevent eccentric runout or binding.

Features & Advantages

• Smooth Coaxial Guidance & Linear Travel: Low-clearance internal thread engagement ensures seamless lead screw movement, eliminating stick-slip resistance and delivering ripple-free linear motion inside the structural tube.
• High Shear Strength & Pull-Out Resistance: Reinforced with 33% glass fibers for superior tensile stiffness and creep endurance; external threads resist stripping and shear pull-out under heavy push-pull thrust loads and dynamic road shocks.
• Extreme Temperature & Dimensional Stability: High heat deflection temperature (HDT) performance maintains critical thread tolerances across -40°C to +120°C, preventing thermal expansion binding under heavy duty cycles.
• Wear-Resistant & Long-Term Durability: Delivers high resistance to cyclic mechanical fatigue and thread flank wear against mating metal components, ensuring maintenance-free operation over extended service cycles.