How to Measure a Torsion SpringHow to Measure a Torsion Spring
What is a High Cycle Spring?What is a High Cycle Spring?

How to measure a torsion spring

Overhead Door Parts

Measure The Overall Length Of The Spring--UNWOUND.Take all your measurements from the broken spring. Measure the spring only from coil to coil. Do not include the winding and stationary ends.

Measure the Inside Diameter Of The Spring
It will be one of the following:

1 3/4"


2 1/4"

Alternate Method

Look for a number imprinted on the winding end(shown above).

1.75=1 3/4" I.D.
2.00=2" I.D.
If it says Raynor it is a 2 1/4" I.D.

Please Note:
We convert 2 1/4"ID to 2"ID. The spring(s)will be slightly Longer.

Determine The Wire Size

Measure the length of 10 coils.

Refer to Wire Chart. Example: 10 coils measures 2 1/4" = .225 wire size.

Take your Measurements at the point of where the spring is broken and not and the end of spring where there are gaps between the coils.

Also Measure the length of 20 Coils
20 Coils measures 4 1/2"=.225 wire size.

Wire Chart
Length of 10 Coils
Wire Size
1 15/16"
2 1/16"
2 3/16"
2 1/4"
2 5/16"
2 7/16"
2 1/2"
2 5/8"
Over .262 Wire, Call for Price.
Wire Chart
Length of 20 Coils
Wire Size
3 7/8"
4 1/8"
4 3/8"
4 1/2"
4 5/8"
4 7/8"
5 1/4"
Over .262 Wire, Call For Price.


Determine Spring Wind.

Standing inside the garage, looking at the spring(s)

If the spring is mounted Left side of center, the spring is Right Hand Wound.

If the spring is mounted on the right side of center the Spring is Left Hand Wound.

Look at the end of your spring and refer to example below.

Left Hand Wind
Right Hand Wind

If you have 2 springs, we highly recommend that you replace both springs.

If your spring wire size does not match the spring chart above, please call for price.

Avoid Having to Repeat The Replacement Process

If your door cycles (opens & Closes) more than 3 times a day, we recommend our High Cycle Option.
An inexpensive upgrade that will double the spring cycle life from 10,000 up to 20,000 cycles.

What is a High Cycle Spring?

A high cycle spring is a re-engineered spring base on your existing spring measurements(See Steps 1 thru 4) creating a DIMENSIONALLY larger spring. A High Cycle spring has the same IPPT(Inch Pounds Per Turn) or torque as the existing spring but has 50% less stress when fully wound, lasting 2X longer. The installation and the number of turns are the same as the existing spring.

(Do not use screwdrivers, socket extensions,Re-Bar or anything else other than correct winding tools)
Related Items

With the springs unwound Now would be the time to replace your cables(Doors up to 7' high)

Add The Repair Kit To your Spring Order

Everything you need to replace your garage door springs and Lift cables
2 Winding Tools 2 Lift Cables 1 Spring Bushing
Only $29.95

Complete Bearing Kit/Torsion Shaft Overhaul

2 End Bearing Plates One Center Bearing Plate
(Pressed Steel Bearings)

Only $28.95

For Assistance Call 1-800-829-6002

Torsion springs can be dangerous and may cause serious injury if they are improperly installed or mishandled. DO NOT attempt to install Torsion Springs yourself unless 1) you have the proper tools, reasonable mechanical aptitude and experience. If you are unsure please call a Professional.

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