Quick Order

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Feb 23, 2016

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Ordering Extension Springs

When ordering extension springs you can use 2 different methods to determine the correct size of replacement springs needed.

Method 1:

  1. Determine Wire Size
  2. Meausre the Inside Diameter to the nearest 1/32"
  3. Determine the Spring Length (Do not include loops in this measurement)
  4. Specify Type of Ends (double loops, single loops, or clips)
  5. Specify Type of Door (sectional, one piece or taylor sectional)

Example: .177 - 1 3/32" ID - 25"

Method 2:

  1. Measure Spring Length
  2. Determine Amount of Stretch (Amount of stretch is half the door height)
  3. Furnish the Door Weigth
  4. Specify Type of Ends (double loops, single loops, or clips)
  5. Specify Type of Door (sectional, one piece or taylor sectional)

Example: 25" - 42" 150 lbs.

Common Extension Spring Lengths:

Extension spring lengths vary by manufactuers. However, the chart below summarizes the length and the stretch for common extension springs.

DOOR HEIGHT LENGTH STRETCH
 6' 6"  25"  39"
 7'  25" 42" 
7'  27"  42" 
7' 32"  42" 
7' 6"  27"  45" 
8'  27"  48" 
8'  29"  48" 
8'  32"  48" 
9'  36"  54" 
9'  39"  54" 
10'  44"  60" 
11'  48"  66" 
12'  53"  72" 
13'  57"  78" 
14'  60"  84" 

 


© 2017 Service Spring Corporation - All Rights Reserved


Corporate
1703 Toll Gate Drive
Maumee, OH 43537
Manufacturing - OH
6615 Maumee Western Rd
Maumee, OH 43537
Manufacturing - CA
7918 W Doe Ave, Ste A
Visalia, CA 93291

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Mon.-Fri. 7:30 to 6:00
Pacific Time Zone
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© 2017 Service Spring Corporation - All Rights Reserved