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How long can you expect springs to last? This is a commonly asked question. You may think that as long as it doesn’t ever get stretched to the point of no return, a spring will always go back to its original shape. However, spring life is dependent on many factors.
Spring Design
Are they properly designed for the intended purpose? Many are not, and errors in spring design are prime reasons for premature spring failure. When selecting a spring, remember to be mindful of what it will be used for and how it will be used. Is spring strength more important or elasticity? If you are not certain, an expert can help guide your decisions.
Quality of Manufacturing Materials
The life of a spring is also related to the quality and modulus of elasticity of the material used when manufacturing it. Ensure that your springs are made from high-quality materials that are best suited for the desired application. For example, stainless steel springs are strong, with a low-stress relaxation and are resistant corrosion and heat. However, their performance is reduced in temperatures below zero degrees. Check out one of our recent blogs on commonly used spring materials to learn more.
Applied Stress and Environmental Conditions
If more force is applied than what the spring was designed to handle, breakage can occur. Extension springs can sustain irreparable damage if they are extended too far. If you keep the deflection of oil-tempered springs to a maximum of 25% of their total length, you can expect a long life. For a practical example of torsion springs, let’s talk about springs for garage doors. Garage door springs break because every time the door opens and closes, the spring wire bends a little. They normally wear at the same rate, and they can be expected to break within six months of each other if installed at the same time (which is recommended). The industry standard for these springs is a life cycle of about 10,000-15,000 uses or a spring life of about 5 years on average. You can choose to increase the spring wire by several sizes and increase spring life to over 100,000 cycles with extra long life springs.
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