Garage Door Spring Different Lengths

To order the correct springs for your garage door you ll need to know a few details about your door system.

Garage door spring different lengths.

If you cannot find the size indication simply measure the inside diameter yourself. A galvanized torsion spring won t rust but the wire is cold drawn when the spring is manufactured which can cause the torsion spring to lose its tension rather quickly. It has a 25 inch relaxed or compressed length and a 42 inch stretched length which is how far the spring should be stretched when the garage door is closed. Plug end extension spring is a p728 28 in.

Springs are usually stretched an extra 1 8 so the total addition to the spring length is eight coils or two inches. The spring will grow 7 5 coils or 7 5 x 250 for the coil size or 1 7 8. Door with an initial tension of 110 lbs. Torsion springs with standard inner diameter sizes of 1 75 and 2 00 inches are used to counter balance and assist in the opening and closing of your garage door.

Different types of garage door springs. 2 means the inside diameter is two inches etc. Although there is a broad range of different spring types and sub types the two most popular categories are extension and torsion springs. Extension springs extension springs are normally found in the upper horizontal tracks on each side of the garage door.

For example on a seven foot high garage door a 34 spring comprised of 250 wire would grow eight coils when it is wound and stretched. Knowing the spring s length can help you find the wire size on the chart above. Once you know the total weight of your garage door using a bathroom scale for doors under 300 pounds you can use the chart below to see the color extension spring you need. Torsion spring inside diameter and overall length in many cases the inside diameter of the torsion spring will be indicated on the stationary cone in between the two springs at the midpoint of the door.

Usually located above the upper horizontal tracks on both sides of the door extension springs are the most common residential garage door. We recommend using torsion springs made of oil tempered steel instead of galvanized steel. Extension springs do as their name suggests. Perfect solutions recommends replacing all springs on your door even if only 1 snaps or breaks.

Most extension springs for 7 foot high doors are 25 inches long with a 42 inch stretch. As you might expect longer springs tend to be used on taller garage doors. They extend as your door moves and helps to balance your garage door. Measure 10 coils to the nearest 1 16.

A torsion spring comes in various lengths and sizes and the spring you use is determined by the size and opening dimensions of the garage door. This extension spring is used on a seven foot garage door. Springs in general last about 10 14 years or 15 20 thousand cycles. If you use an extension spring with a different first number you need to adjust your cable length to achieve the necessary 10 percent of stretch when your door is open.

This we believe is the most cost effective solution long term. For an 8 foot high door the spring would be 28 inches long with a 48 inch stretch.