Extension Springs
At our company, we take pride in being a reputable and professional manufacturer of extension springs. With our expertise, experience, and commitment to quality, we have established ourselves as a trusted provider of high-performance extension springs for a wide range of industries.
The Extension springs (also called a pull spring,tension spring) is a spiral spring that bears the axial tension. The tensile springs are usually made of circular cross section materials. In the absence of load, there is no gap between the ring and the ring of a stretch spring.
Overview of Extension Springs
Extension springs are utilized in a diverse range of applications requiring precise force at specific deflections. These springs are employed for retracting aircraft landing gear, securing equipment to offshore oil rigs, and as hood-assist springs for heavy trucks. They are also used for specialized security barriers in roadways and buildings. Extension springs vary widely in length (ranging from 1/2-inch to 50 feet) and the force they generate (from a few ounces to thousands of pounds).
Operation of Extension Springs
Extension springs are designed to store and absorb energy while providing resistance to pulling forces. During manufacturing, the wire is rotated backwards to create “initial tension,” determining the tightness of the coils. Pulling the spring apart undoes this rotation, developing force or initial tension. This initial tension can be adjusted to meet specific load requirements.
Heavy-Duty and Small Extension Springs
Heavy-duty extension springs are built to withstand substantial loads and challenging environments. We offers expert design assistance to optimize their performance and lifespan. For small extension springs with ODs smaller than 0.500″(12.7mm), we provides customizes springs based on specific requirements by customer.
Our Extension Springs
Our custom-made springs are wound with initial tension to provide secure installation holding. The initial tension is the minimum force required to separate adjacent coils. Each spring features a constant diameter with various hook/loop styles. Tolerances for extension spring rates depend on the body and wire diameter, typically within +/- 10% and +/- 5% on the diameter. Please note that initial tension is challenging to control and is provided as a reference value only.
Extension Spring Manufacturing
When it comes to extension spring manufacturing, you can rely on our industry-leading expertise. Our teams consist of experienced manufacturing technicians and engineering experts dedicated to creating customized products tailored to your requirements. We have the capability to produce extension springs of different thicknesses and lengths using both cold and hot coiling processes.
Another benefit of partnering with us is our extensive stock of various alloys. This allows us to efficiently develop a couple of prototypes in-house, offering a cost-effective solution for our customers.
Ends Types
Extension springs is a spiral spring under axial tension, the hook is in the form of long side hook spring.
Our extension springs includes a variety of machine-made hook and full-loop configurations. These extension springs may feature different hook or loop designs, including an across center transition of the last coil before forming the hook or loop. The angle between hook/loop planes (end position) is randomly determined. If you require a specific end configuration, please reach out to us for design support and a quote.
