A spring is an elastic object, usually wound using special grades of steel, that can store mechanical energy. As the spring is compressed or stretched during its operation, it exerts a force that is directly proportional to the change in its length. Depending on the demands of the application, a spring might be manufactured in several different configurations and materials. For instance, metals such as titanium, beryllium copper, and phosphor bronze might be used for manufacturing springs that require a higher degree of corrosion protection. However, in some applications, one can even find springs manufactured using plastics. In short, if the material demonstrates the desired amount of flexibility and rigidity, it can be used to manufacture a spring. In this article, we shall discuss the details and applications of an extension spring. A good extension spring not only absorbs and stores energy, but it also creates the right amount of resistance to a pulling force. The initial tension of the spring equals the minimum force required to separate the coils of the spring that have been wound together. The more tightly together the coils are wound, the higher would be the initial tension of the spring. Depending on the load requirements of your application, your chosen spring manufacturer will supply you with springs that have varying levels of initial tension by appropriately winding the coils. More often than not, a spring needs to be fitted with a hook or an end loop in order to integrate it with the desired application. There are a myriad of hoop and loop varieties that can be fitted to your spring type. Some end configurations of a spring include: centered hooks and eyes, swivel hooks, cross-over center loops, full loops, and machine hooks. Once you have discussed your application with your chosen manufacturer, they will suggest the most ideal end configuration for your spring type. Some other important parameters that need to be taken into consideration while placing an order for hooks are—stress levels, fatigue levels, deflection, and load levels. There are several advantages of partnering directly with a manufacturer to source the exact custom extension spring type that you desire. Here are a few: - You can expect an initial design and prototype in short turnaround times.
- You can take any spring you like and ask for the manufacturer to have it duplicated or customized to your application.
- You can expect complete assistance during the design and manufacturing phase.
- Raw materials are really important to a spring; by partnering with a manufacturer you can have a say in what grade of raw material you are expecting in your spring.
- Dealing direct with a manufacturer also helps you eliminate other middlemen and experience substantial cost savings and better value for money on your extension spring order.
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