Constant spring spring is also called power spring or flat spiral spring,is a special kind of extension spring. It is made by the steel band with high intensity customized and its inside bended by a specific machine. Hence each lap of metal is coiled tightly around the innermost lap of metal. When the metal is stretching (reversing), the internal stress resists the load force, which is exactly the same as the ordinary extension spring. While its elasticity coefficient is close to a constant(zero).

The stainless steel constant force springs apply to the situation with a large quantity of stretching and not increasing the load force. In use,it usually use the ID to make the spring coiled tightly around the roller, and the free end is connected to the load,just as a counterweight. However, it also can be reversed, that is make the free end fixed, the spring supply the work power by itself, just as the carbon brusher of electrical devices. At present, the constant force springs are widely used in various field, such as the lifting application of the fan and medical device, take-up application of the electrical appliance.

The constant force spring can produce lots of flexibility, and its installation method can choose back-to -back connection or two or more springs in series, which make the load capacity multiply. As shown in figure:

Dongguan Yongsheng Metal Products Co., Ltd, has specialized in product developing and producing of spring for 15 year, and carefully choose the high quality stainless steel material, the delivery time is stabile, the quality is 15 percent better than the same products. Welcome to visit our company and purchase if need!