Historically the garage door industry used torsion springs made of oil tempered wire that conformed to astm 229 standards which detail among other things tensile strength ranges by wire size.
Oil tempered garage door spring.
High durability oil tempered torsion springs are well known for their exceptional durability.
They have been on the market for a very long time and are the torsion springs most garage doors utilize.
Class i and class ii.
Oil tempered garage door springs undergo a unique process to increase their tensile strength without introducing brittleness into the metal.
The foremost reason that so many prefer oil tempered springs is durability.
The wire which is used to make the spring is heated quenched in oil and then heated again.
Oil tempered springs commonly referred as the classic make this type of garage door spings have been with us for years and are the most common types of springs.
This wire falls into two categories.
The vast majority of garage doors that rely on torsion springs use oil tempered torsion springs by default largely due to their cost and abundant availability.
Oil tempered springs have been around for a very long time and they are the most common springs on a garage door.
The difference is that class ii has higher tensile ranges than class i in the same wire size.
Still these springs are nice because they keep their tension and rarely ever need to be tightened.
It s not uncommon for an oil tempered spring under heavy constant use to outlast its zinc galvanized counterpart by a considerable margin.
These springs however have one downfall.
Well to give you an idea about these two types of garage door springs here is oil tempered versus zinc galvanized torsion spring.
Oil tempered springs for both garage door.
What they are and their pros and cons.
Oil tempered wire mechanical springs and garage door springs are often called upon to do serious heavy lifting.
Oil tempered torsion springs are what we call the classic make for garage doors.
The spring wires heat and then bathe in hot oil.
First the spring is brought to a high temperature before being quenched in an oil bath.
Oil tempered torsion springs offer several unique advantages.
This process makes sure the springs are less prone to damage.
Simply put oiled torsion.
Their name derives from the way they are made.
Oil tempered springs are then heat treated with a series of heating and cooling phases using hot oil so that they can adequately handle the infrequent stress applications applied to them whenever the door is opened or closed.
Therefore oil tempered springs remain the most ubiquitous type of torsion spring for the following reasons.