Extension Springs
This type of spring is manufactured to operate in tension with tightly wound coils. Both ends are made into hooks or loops to be used to attach or hang on other equipment. When a tensile force is applied, the coils of the spring stretch and the spring resists in an attempt to stay together. When the tension stops, the spring will retract as tight as before.

Hooke's law states that the elongation of a spring is proportional to the weight acting on it. Many types of springs obey this rule as long as the applied force does not exceed the spring's elastic limit. And the length of the spring always changes by the same amount when it is pushed or pulled. Elasticity is the property of a spring that causes it to return to its original shape after it has been manipulated in some way. This is called resting force, in the context of Hooke's Law. The restoring force is usually proportional to the amount of elongation produced.

When you want to use the tension springs. We can help you determine which spring type and material will provide the best suitability and performance for your application. Contact Hooke Spring to speak with one of our spring experts.