Extension Springs | High-Performance Tensile Spring Solutions

Overview:
Shenzhen Shuanghui Electronic Technology specializes in the design and manufacturing of high-precision extension springs, also known as tensile springs. Engineered to provide reliable resistance to tensile loads, our springs are essential components that absorb and store energy, ensuring smooth operation and return to original length in a vast array of applications.

Key Features & Benefits:

• Precision Engineering: Each spring is meticulously calculated and crafted to meet exact load, distance, and space requirements, guaranteeing consistent performance batch after batch.

• Durable & Long-Lasting: Manufactured from high-quality materials (such as music wire, stainless steel, etc.), our extension springs offer excellent fatigue resistance and longevity, even under continuous cyclic loading.

• Customization Available: We provide endless customization options. You can specify your needs for:

  • Loop Configurations: Machine hooks, German loops (side hooks), reduced loops, or custom end forms.

  • Initial Tension: Precisely calibrated to require a specific load before the coils begin to separate.

  • Dimensions: Exact wire diameter, outer diameter, free length, and extended length.

  • Material & Finish: Various options including music wire, stainless steel (302/304/316), oil-tempered wire, and finishes like zinc plating or powder coating for corrosion resistance.

• Rigorous Quality Control: From raw material inspection to final product testing, every spring undergoes strict checks for force, length, and durability to ensure it meets international standards and your specifications.

Technical Specifications (Customizable):

• Type: Extension / Tensile Springs

• Materials: Music Wire (Standard), Stainless Steel 302/304/316, Oil-Tempered Wire, Bronze, Copper, and other specialty alloys.

• Wire Diameter: Range from 0.5mm to 4.0mm (custom sizes available).

• Outer Diameter: Range from 3mm to 50mm.

• Free Length: According to your design requirements.

• Finish: Zinc Plating (standard), Powder Coating, Electropolishing, Passivation, or as requested.

Common Applications:
Our extension springs are versatile components used across numerous industries:

• Automotive: Braking systems, throttles, pedals.

• Appliances: Washing machine door seals, agitators, retractable cords.

• Industrial Machinery: Counterbalance systems, hatches, doors.

• Toys & Consumer Products: Retractable leashes, pop-up mechanisms, fitness equipment.

• Medical Devices: Actuators, handheld tools, mobility aids.

Why Choose Shuanghui's Extension Springs?
With over 20 years of spring manufacturing expertise, we combine advanced production technology with stringent quality management. We are committed to delivering not just a product, but a reliable solution that enhances the performance and safety of your designs.