Extension Springs

Extension springs operate under tensile load and are activated when a pulling force separates their ends. They respond with a counterforce that returns the system to a closed position and are used in a variety of applications where tension maintenance or directional return is required.

Key design features include spring rate, diameter, free length, material strength, and initial tension point. A critical component is the shape of the hook or end loop, which serves as the spring's attachment point and varies depending on system requirements.

Manufacturing is conducted according to precise technical specifications, including surface treatments if necessary. These springs are often subject to frequent cyclic loading, requiring strict quality control to ensure consistency, dynamic performance, and fatigue resistance.

Extension springs are engineered to provide stable and uniform resistance response, with predictable behavior under varying loads.

We produce the spring end types according to customers, application needs.

Conical extension springs are a specialized type of helical spring characterized by a tapered shape with a progressively changing coil diameter. Unlike standard extension springs, their conical geometry provides a more controlled force distribution and can help prevent tangling or buckling during extension.

This design allows for variable resistance as the spring stretches, making them ideal for applications requiring a nonlinear load response or where space constraints and precise force control are critical.

Manufacturing conical extension springs involves high-precision winding and careful selection of materials to ensure optimal performance under tension. After production, each spring is thoroughly tested to verify that it meets stringent dimensional and mechanical specifications.