Cooling coil spring that receives compressive load from direction of center-line of coil is used by changing the diameter of coil considering the different size and shape of the spring end to match products. The usage of the spring is most vast range; easy design, relatively simple process, cheap production cost and high efficiency.

Sample can be produced before mass production.

It can be easily installed in a narrow space, and various mechanical movements (pulling, pushing, etc.) are possible using the repulsive force of the spring. Generally, both ends are machined to hook shape for load transfer. Ring length and deformation are free according to use. Products that are widely used throughout the industry. Sample production before mass production is possible.