Garage door extension springs is mainly made of high-strength alloy steel wire, which has the characteristics of elastic, high hardness and strong fatigue life.Extension springs for garage doors are supplied by Xiangying Spring which is is a set of technology development, spring design, production processing, sales services in a body of 4S enterprises....Send Inquiry
Garage door extension springs is mainly made of high-strength alloy steel wire, which has the characteristics of elastic, high hardness and strong fatigue life.Extension springs for garage doors are supplied by Xiangying Spring which is is a set of technology development, spring design, production processing, sales services in a body of 4S enterprises.
Product Name: Garage door extension springs
Product Materials: The material of our garage extension spring can choose domestic steel wire or imported steel wire, piano steel wire, stainless steel, alloy steel wire.
Hook Shape: British hook, German hook, also can be customized according to the customer's assembly requirements.
Surface Treatment: The surface is made of green zinc, which is verified by RoHs.
Wire Diameter: 0.1-65.0mm
Type of Loops: Crossover Loops
Double Twisted Loops
Full Loops On the Side
Full Loops Over Center
Machine Full Loops
Machine Half Loops
Double Full Loops . Etc
Or customized according to your requirement
Design parameters for extension springs
Note material diameter (D), outside diameter (D), total length (Ho), number of working rings (n), position and shape of earrings, minus
Charge (p 1, p 2... P I and the corresponding value (H1H2...) Hj), there is initial tension, Po should be added, as shown in the picture :
Full equiped with advanced CNC manufacturing machines and test equipments，more than 50 sets of the computer automatic spring coiling machine,temper furnace , grinder machine etc.
Features of garage extension spring
1. Many different terminal devices or "hooks" are used to ensure that the spring is being stretched. The extension spring works in opposition to the compression spring;
2. A compression spring acts in reverse when pressed, and a extension spring acts in reverse when stretched or pulled. When the ends of the extension spring are pulled apart, the spring tries to pull them back together. Like compression springs, extension springs also absorb and store energy;
3. Most extension springs are usually under some degree of tension, even without any load. This initial tension determines how tightly the spring is wound without any load.