Characteristics of tension springs

A tension spring is a spiral spring that bears axial tension and uses the tension after stretching to store energy. After pulling it apart, it will attempt to pull it back together, generating opposing forces. When not load-bearing, the coils of the tension spring are tightly connected, so the tightness of the tension spring coil is determined by the initial tension. The production materials generally include stainless steel, piano steel, high carbon steel, phosphorous copper, oil tempered alloy spring steel, etc
The closure of tension springs generally includes threaded embedded, cross center pull ring, pull hook, enlarged small hole, reduced small hole, rectangular closure, and water droplet shaped closure. The length of the closure from the spring body can be determined according to specific circumstances. A more common type is a hook tension spring, where the "hook" is the source of tension and its shape is generally circular, making it easy to fix to the connected components.