Standard Commercial Torsion Springs
Commercial and Industrial garage doors typically have at least two torsion springs. Many of these doors use four or more torsion springs in one of four setups: linear, duplex, triplex, or mixed.
linear systemduplex system
The triplex system functions very similarly to the duplex system. In this setup, there are two springs inside the outer spring.
The mixed system, as you guessed, features a combination of the linear system and the duplex/triplex system. Mixed systems use more than one set of duplex or triplex springs on each half of the garage door. This becomes an option for installers when the garage door shaft measures long enough to accommodate multiple springs. If one of these garage doors weighs very heavy, it is sometimes a better option to have multiple pairs of duplex springs sets on the garage door.
Users of the duplex and triplex systems, however, often find it difficult to detect a possible broken inner spring.
Does your commercial door use standard torsion springs? Go to our Commercial and Industrial Torsion Springs page to learn more and to order new springs for your garage. Also, if you have a more common residential garage door spring, you can try searching for your spring in our Find My Spring Databaseâ¢. For information on how to measure your spring, please see our How to Measure Torsion Springs tutorial.
A Loud Bang In The Garage
Another thing that can reveal a broken torsion spring is a loud bang emanating from your garage. This can be extremely loud, and can often sound like a gunshot or a burglar breaking into your home. This bang is a result of the large amount of torque that your broken tension spring has released in a mere split-second. An approximate 2-inch gap in your torsion springs coil is also a sign of breakage. In the process of torqueing up the spring, the coil is being extended to create a travel distance . When a torsion spring breaks, it exerts the force it preserves while going back to its natural state, as the fracture splits the springs coil into two separate coils.
Purchase Standard Torsion Springs With Our Find My Spring Database
Garage Door Torsion Springs are normally centered above the garage door on a one inch shaft. At one end of the spring is the winding cone that is secured to the shaft with set screws. At the other end of the spring is the stationary cone. This is secured to the spring anchor bracket, which is secured to the header. On two-spring assemblies the stationary cones of both springs are mounted back to back to the spring anchor bracket. The shaft running through the springs transfers tension from the springs to the cable drums at the end of the shaft. These drums pull on the cables, which pull on the bottom of the door to balance the weight of the garage door.
When you cannot use our Find My Spring Database:
All the residential torsion springs we provide are wound with 1/2″ rods, usually 18 inches. You can buy 1/2″ X 36″ rod at almost any hardware store and cut one in half. If you would like for us to include a pair of winding rods in the order you can follow the links at our Garage Door Tools & Technical Support page.
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EZ-Set Springs: Do NOT use this database
Commercial Torsion Springs
Garage door torsion springs on larger sectional and rolling steel doors come with many additional inside diameters. For information and prices visit our Commercial and Industrial Torsion Springs page.
Overhead Door Cones
We don’t recommend reusing the cones because they are dangerous the hole sizes for the winding bars are inconsistent.
Shipping Times
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Single Spring Vs Two Springs
The advantages to having more than one spring is that when a single spring in a single torsion system assembly breaks, the other spring still supports some of the doors mass, preventing it from crashing down. Another advantage to having more than one spring is that a pair of springs generates counter force from both sides of the spring anchor bracket, this counter force keeps the system balanced. Conversely, a single spring pulls the axle sideways, damaging the systems moving parts. Learn more in the article below:
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Measure The Torsion Spring Wire Diameter
First, measure 20 coils and divide that measurement by 20. This will give you the wire diameter. For example, suppose the measurement of 20 coils is 5 inches. 5 divided by 20 gives you a spring wire diameter of .250. Be extremely precise with your measurements. If the measurement of 20 coils is 4 7/8 inches a difference of only 1/8 inch youll have a spring wire diameter of .243, which means you need a different sized torsion spring. To confirm your initial measurement, measure 40 coils and divide the measurement by 40.Some torsion springs have a color coding system green for .243, gold for .250 and red for .225. However, there are two color coding systems and one really isnt used anymore, so your measurements and calculations with 20 and 40 coils are more reliable.
Introduction To Garage Door Springs
Introduction to Garage Door Springs Video
Garage door springs counterbalance the weight of the door to make it easy to open and close. They serve the same purpose of counterweights used to balance doors in centuries past and in many doors today. For example, if a garage door weighs 100 pounds, a spring force of 100 pounds needs to pull against the weight of the door. This can be accomplished with springs that either stretch or torque special parts to assist in balancing the door.
Replacing garage door springs is dangerous because of the torque in a wound torsion spring or the stretch in an extended extension spring. Garage door repairs often involve replacing garage door parts that are tied into the spring system, and many accidents, injuries, and deaths have occurred for those who have not understood the forces at work. A proper understanding of garage door springs, garage door weights, garage door parts, and how these are interconnected is essential for safe repairs.
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Replace Both Torsion Springs
If you have two torsion springs on your door, you should replace both of them. Most doors have springs with the same cycle life rating. In other words, when one spring breaks, the other spring will probably break before too much longer. Since you will be going to the trouble of changing one torsion spring, it is usually better to change your second spring as well. This will save you time in the garage as well as money on the shipping costs.
Some doors, however, have two springs with different dimensions. Many times, the cycle life of the broken spring is shorter than the cycle life of the unbroken spring. This means that you may still have another couple thousand cycles left on your unbroken spring. If you only change one spring now, you will probably need to change your other spring fairly soon down the road. Therefore, we recommend that you still replace both springs, but that you purchase springs with the same length, inside diameter and wire size.
If this is the case, each of your new torsion springs will need to lift 1/2 of the total lift of your two old springs. A matched pair of springs can be determined for you by using our Unmatched Springs calculator.
For help determining whether you should replace both springs on your door, see our Torsion Spring FAQ’s page. You can also read more about springs with different dimensions.
Introduction To Standard Torsion Springs
A standard torsion spring has a stationary cone which secures the spring to the spring anchor bracket. Since this bracket is secured to the wall, the stationary cone, as its name suggests, does not move. The other end of the torsion spring has a winding cone. This winding cone is used when installing, adjusting, and uninstalling the springs. When installing the torsion spring, the coils of the spring are wound up to create a lot of torque.
shaftend bearing platescable drumsbottom bracket
Since these cables hold the weight of the garage door, the torque from the torsion springs does not dangerously spin the shaft until the spring is loose. Instead, the garage door weight slightly exceeds the lift produced by the torsion spring. As a result, a properly operating garage door with the right springs should not seem to weigh nearly as much as the garage door itself. When this principle holds true through the duration of the door’s travel, the door is balanced.
With the help of the torsion springs, you should be able to operate the garage door manually without much trouble. Likewise, it does not take too much work from the garage door opener to lift the garage door. As the door opens , the torque on the shaft keeps the cable tight on the cable drum. As a result, the cable winds up on the cable drum, allowing the torsion springs to unwind.
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Garage Door Spring Size Matters
The job of a spring is to counterbalance the sectional doors weight as it opens and closes. When the spring is too weak or too hot, it can lead to a damaged door and/or garage door opener. The garage door opener should never strain to open or close the door. If it does, it can damage the door at the connection point with the opener or wear out the opener components.
Torsion springs are rated by their IPPT. IPPT stands for Inch Pounds Per Turn. It represents the force a spring exerts per complete turn of the spring. IPPT is affected by the wire gauge, the springs diameter, its length, and how tightly its wound. Calculating the correct IPPT of spring is not an easy matter. You have to know the doors weight to know how much force the spring needs to exert to neutralize that weight. Door manufacturers can provide some basic metrics, but frequently additional weight is added in the form of struts to strengthen the door.
If youre curious to find out whether you have the appropriate spring and that it is installed correctly, follow this simple test.
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We carry only the top product lines from the most trusted manufacturers in the industry. Last but not least, Ontario Door Repairs strive to provide the best customer service in Richmond Hill Ontario and the GTA area.
Wouldnt it be nice if owning a garage door was simple? Its frustrating dealing with problems that can spring out of nowhere, especially the headache broken garage door springs can be. Most standard torsion springs are rated for 10,000 cycles or 10 years, whichever comes first.
The torsion springs allow the garage door to function smoothly and properly. The tremendous tension that the spring is under, which is why springs are very dangerous to be around, is what allows the garage door to operate. This is why it is recommended to replace both springs when only one is broken. Garage Door Spring Service.
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Should I Get A Torsion Spring System Or Torquemaster Springs System
To begin lets start with understanding what the Wayne Dalton Torquemaster system is and what a
torsion spring system is. There are similarities, but there are also critical differences in each system.
Wayne Dalton Torquemaster System:
Wayne Dalton designed the Torquemaster system in an attempt to improve on the torsion spring
system. He kept the idea of a spring bar/torsion tube mounted on the header above the garage door
opening on the inside of the garage. His system, however, utilizes one or two springs that are inside the
spring bar/torsion tube. The number of springs used is determined by the weight of the garage door.
This system also utilizes small plastic drums mounted on each end of the spring bar/torsion tube. Cable
wrap around these plastic drums and then attach to the bottom bracket located on the bottom of the
bottom garage door panel on each side. In this system the internal springs provide the force to counter
balance the weight of the garage door while the cables and drums do the lifting. Winding these springs
to the proper tension involves using an electric drill, in older models, or a socket and socket wrench in
newer models. The spring are then wound a set number of times depending on the weight of the
garage door. In the Wayne Dalton Torquemaster system if only one spring is used the spring winder will
always be on the right side and on a two spring system there will be a spring winder on each end. In a
application it has its limitations and problems.
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You’ve Confirmed You Have A Broken Spring Now What
We often take for granted the complicity of our garage doors and how much engineering has gone into being able open and close an entire wall of our home. Don’t let the memory of how light your garage door was when you opened it manually once last summer lead you to believe that it is a simple and safe system that you can repair yourself. Are we saying it’s impossible? No, it is possible for you to repair your garage door yourself, we’ve all become specially trained YouTube contractors at one point or another. What we are trying to make clear here, is that WE DON’T RECOMMEND YOU TRY THIS REPAIR YOURSELF. Garage doors weigh a lot, and have tons of potential energy stored in their lifting systems. Trying to repair one without the right tools and knowledge can easily end in disaster. What you read below is simply an outline of what to expect when you call Maynards out to repair your broken spring. We don’t charge trip fee’s for numerous reasons, one of which is we hope you will call us to at least provide you with a quote before deciding to tackle the repair yourself. You might be surprised at how affordable the repair is with us.
Get It Right The First Time
To buy standard garage door torsion springs go directly to our torsion spring prices at the bottom of this page.
We currently stock 1 3/4,” 2,” 2 1/4,” and 2 5/8″ ID torsion springs and cones for residential doors. For all other types of springs go to our Garage Door Springs page. For an engineer’s perspective on torsion springs we recommend you visit Richard Kinch’s page titled “How I Replaced Deadly Garage Door Torsion Springs And lived to tell the tale.” He has a lot of helpful information and engineering formulas there.
To assure you are ordering the correct springs, read or review this page. The extra time should prove beneficial. Over the years we have discovered that informed customers are happier.
Standard residential torsion springs are found on a shaft above the center of the garage door. These springs typically come in 1 3/4″, 2″ and 2 1/4″ inside diameters. If you have a broken torsion spring, read below to make the measurements you need, and then purchase a new garage door spring or springs.
Included below are a number of popular torsion spring topics, many of which you may want to consider before ordering a new standard torsion spring for your garage door.
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