Door weights 150lbs and under will be shipped with 1 high cycle life torsion spring.
Overhead door garage door torsion spring chart.
If your garage door has extension springs the springs stretch out as the door closes and retract as the door opens the garage door industry has released a standard color chart for the strength pull for these springs as seen in the table below.
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Measure the overall length of the garage door spring unwound take all your measurements from the broken spring.
The chart is based on information from the door access systems manufacturers association dasma.
Always convert torsion springs to a spring of equal or greater wire diameter.
We will use the corrispoding weight you ordered to customize the perfect spring s to balance your garage door.
Determine the wire.
Torsion springs extension springs and other garage door hardware can cause serious injury or death if not handled and installed properly.
Force spring exerts per 1 turn of the spring.
Multiply the door weight by the hi moment arm and then divide by the number of turns.
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Do not attempt to install springs or hardware yourself unless you have the proper tools reasonable mechanical aptitude and experience and upper arm strength.
2 means the inside diameter is two inches etc.
This system aids in proper identification for repair ordering and.
If you cannot find the size.
Measure the outside diameter and then subtract twice the wire diameter.
1 75 means the inside diameter is 1 inches.
Step 2 measure the inside diameter of the your garage door spring it will be one of the following.
Weighing your garage door is the best possible way to determine the proper springs needed for the door.
Many of the older extension springs may not have visible paint color on either end of the spring.
Professional installation is recommended.
This video applies t.
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.
Garage door spring size chart.
Do not include the winding and stationary ends.