Garage door extension springs have for years been the most common springs seen to open a garage door. Garage door torsion spring is also used for this purpose. But are a more refined and sophisticated type of spring that is becoming increasingly popular. Most overhead garage doors have extension springs, but you can always request torsion springs if you want. Double automated doors usually have torsion springs.
Garage door torsion spring parts twist steel retaining the force of the rotation of the inner rod. If you think of the old-fashioned mouse pad, you have the idea. The force is created by turning the mouse trap under pressure. The torque spring force is proportional to how the torque in the twist is. This is usually a closed unit and thus safer than the loose spring. Torsion springs are located in the upper part of the door and are usually mounted on the door head. This type of spring will be the much stronger of the two and can lift a weight up to 500 kg. It has a lifetime of approximately 20,000 lifts.
The extension spring looks like the old fashion box in the spring you see in mattresses. They are located on the sides of the door and are mounted on the swing arms. They have a hook on each end and when purchased, they will be in a compressed state. Because they have no protection factors when stretched, it is more dangerous for the two springs. Its main difference garage door extension spring color code chart from torsion springs is that the operation of the extension spring is at a distance. The longer it is extended, the more power is spent in the spring. It can last from 5,000 to 10,000 lifts.