Garage door springs must be properly balanced to operate efficiently, and they can experience a reduction in tension over time. Signs that can indicate the need for a garage door spring repair or replacement include:
Do you need to adjust your garage door torsion springs? Or rather replace them entirely with new ones? Look no further, Sarotech offers cutting edge torsion spring calculation programs for Overhead doors (fully supporting Apco and Canimax drums)
Garage Door Spring Calculator Software
Most residential, commercial and industrial sectional garage doors use standard lift tracking and standard torsion hardware. Therefore, determining how to wind a torsion spring may depend on many factors.
On standard lift doors, the formula is (DH/DC)+1, or the door height in inches divided by the drum circumference in inches, plus one. After winding the spring, you may need to add or subtract a quarter turn or more.
The formulas for determining the number of turns to wind a torsion springs is based on the drum number, door height, and high lift dimension, which is the distance from the top of the door to the center of the horizontal track.
As with the vertical lift doors, the formula for the number of turns on the springs is complex. Therefore, we rely on software or drum charts to calculate the number of turns to wind the springs. If you contact us, we can help you with this.
Huge inventory of parts and torsion springs for same or next day shipping! Here you will find all you need in the most common sizes of 1 3/4," 2," 2 1/4," and 2 5/8" inside diameter springs. Larger 3 3/4" and 6" inside diameter commercial and industrial springs may require a day or two to ship. You'll also find TorqueMaster Springs, Extension Springs, Self-Storage door springs, steel rolling door springs and springs for one piece single panel doors.COVID update. Because we care! When picking up parts please wear a mask or keep a distance of six feet.
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.
The torque transfers from the shaft to the cable drum, pulling the cable and the bottom of the garage door upward. This torque is then applied to the shaft, the metal tube that goes through the torsion spring. The ends of the shaft are held up by the end bearing plates. Resting against the race of the bearings are the cable drums. The cable wraps tightly around the cable drum, and the cable goes down to the bottom of the garage door, securing to the bottom 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(s). (The lift is the amount of weight that each spring can raise off the ground.) 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 (either manually or with the opener), 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.
As the torsion spring unwinds, it loses some of its torque. Therefore, it also loses the amount of lift that it can produce. Vertical lift and high lift garage doors deal with this problem in a slightly different way, and you can read about How Vertical-Lift and High-Lift Garage Doors Work. Standard lift garage doors are almost universally used in residential garages and are in the majority in commercial and industrial settings.
It all comes down to the cable drums. Standard lift cable drums have a flat portion for the cable, with one or two grooves that are a little higher. (These higher grooves are addressed in the link above.) As the garage door opens, the rollers slide along the track. The door transitions from the vertical track to the horizontal track.
When the garage door is fully open, there is still about 3/4 to 1 turn still applied to each torsion spring. Since the bottom roller on the garage door typically rests on the curved portion of the track, the door will want to fall down. The extra torque in the torsion springs, though minimal in comparison to the torque when the garage door is closed, keeps the door open.
Included below are a number of popular topics that interest homeowners when considering torsion spring purchases. Though it may be helpful to consider these options, they do not apply to all garage doors.
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.One Spring or Two?A lot of people have a garage door with only spring on it and wonder whether they should upgrade to two springs. If the new torsion spring that you will install on your door has an inside diameter (ID) of 1-3/4" and a wire size of .250 or larger, we suggest that you convert to two torsion springs. The same holds true with a 2" ID and .2625 wire size or a 2-1/4" ID and .283 wire size.
The problem with having a larger wire size on a single-spring door is that the spring pulls on the shaft as the door opens and closes. This can cause serious problems in the future, including cables breaking or peeling off the drums and steel sections getting damaged. While it usually costs $5-$10 to convert over to two springs, it can save a lot of money down the road.
The cycle life of a torsion spring refers the to rating regarding how many cycles (the door opening and closing is one cycle) the spring should make before it breaks. The cycle life rating does not account for premature breakage, often caused by chips in the steel or highly corrosive environments.
The standard cycle life in the garage door industry is 10,000 cycles. Spring under 10,000 cycles are considered overstressed and are not recommended for use. If you would like to have more than 10,000 spring cycles, your new torsion springs will need to have a larger wire size. The larger the wire, the longer it will take for the spring to break as thicker steel requires more bending before it breaks.
If you increase the wire size of your springs, you will also need to increase the length to keep the same lift and torque rating. On narrower, heavier doors it may also be necessary to increase the inside diameter to provide enough space on the shaft for the springs to fit.
When you search for a specific torsion spring, compatible springs with the same lift but a different cycle life will be listed. You can upgrade your torsion springs by purchasing one of these springs instead of spring matching your old dimensions. If you are browsing instead by door height, you can look under larger wire sizes to find a compatible spring with more cycles.
We supply oil-tempered coated torsion springs. We can also provide galvanized torsion springs, but we do not recommend them in most circumstances. Over time, galvanized torsion springs lose more tension than oil-tempered springs, often losing one to two turns by the time they break. This can create service problems as well as shortening the life of the opener. There are times when galvanized springs last longer, simply because they lose more tension. The same longer life can be achieved by not winding oil-tempered springs as much, but we don't recommend this as doing so can damage your opener. If your door is in a highly corrosive environment, galvanized torsion springs may help to prolong the life of the springs. To prevent against premature breakage, we still recommend oiling galvanized springs as we do oil-tempered springs. For more information about galvanized and oil-tempered torsion springs visit our blog. 2ff7e9595c
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