Extension Springs

Open loop end extension springs

Open Looped End

Clipped end extension springs

Clipped Ends

Double looped end extension springs

Double Looped End

Extension springs are based on resistance. They are tightly coiled springs that increase resistance as more force is used to pull it out, thereby extending the spring. The general purpose of extension springs is to return moving objects back to their starting positions. The object moves, extending the spring, and the resistance of the extension spring takes effect, pulling it back. This is exactly how garage door extension springs function.

Of course, not all garage door extension springs or overhead door extension springs are alike. Even the hook or loop at the end of the spring, which one uses to mount the spring, may be a different style or shape depending on the needs or shape of the particular object you are hooking the extension spring to.

Garage door extension springs are designed specifically for a garage door’s height and weight. A seven-foot door will not use the same spring as an eight-foot door. Extension springs operate on a pulley system and are placed above the horizontal track of the garage door. The initial tension of the extension springs may vary. The initial tension is the force that holds the coil together and must be exceeded to get the extension spring working. Although the standard initial tension is appropriate for most garage door extension spring needs, initial tension can be customized for specific situations.

Your Source for Garage Door Extension Spring Replacements

If you need new garage door extension springs, or you require garage door extension spring replacement, contact Industrial Spring immediately. We can help you with any of your garage door extension spring questions and provide you with a free estimate for your new or replacement extension springs.

Available Extension Springs and Wire Types:

  • Hard Drawn  
  • Class II Wire
  • Black Coated

Available Wire Sizes:

  • .112" - .331"

Additional Services:

  • Stenciling
  • Shot peening
  • Custom ends
  • Painting
  • Powder Coating

Available Extension Spring clip ends

As you will recall, extension springs must be attached to other moving parts in order to do their job, and different parts may require different types of attachment methods. There is a wide variety of clip ends for your extension springs. They are typically made by bending the end of the extension spring wire into the desired shape. We can provide you with the following ends for your extension springs:

  • Open Looped End                       
  • Clipped Ends                                
  • Double Looped Ends

If you don’t know what kind of extension spring ends you need, just give us a call at 800-899-7945 to describe your project, and one of our experts should be able to help you.

Standard Spring  Extension Applications

Remember, a quality garage door starts with quality parts, and that includes the best extension springs you can find. Industrial Spring has a reputation for making quality springs that goes back decades. Ours is a name you can trust to provide you with high-performance, long-lasting springs at a reasonable price.

Request a quote on the garage door extension springs you need, or, if you’re not sure what kind of extension springs and/or extension spring ends you will need for your garage door, contact us to learn more.