Their name derives from the way they are made.
Oil tempered garage door spring.
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.
This wire falls into two categories.
The foremost reason that so many prefer oil tempered springs is durability.
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.
They have been on the market for a very long time and are the torsion springs most garage doors utilize.
Oil tempered springs have been around for a very long time and they are the most common springs on a garage door.
It s not uncommon for an oil tempered spring under heavy constant use to outlast its zinc galvanized counterpart by a considerable margin.
This process makes sure the springs are less prone to damage.
After the heating process the oil is slowly cooled to temper the metal.
The difference is that class ii has higher tensile ranges than class i in the same wire size.
These springs however have one downfall.
Oil tempered torsion springs offer several unique advantages.
The spring wires heat and then bathe in hot oil.
Therefore oil tempered springs remain the most ubiquitous type of torsion spring for the following reasons.
Well to give you an idea about these two types of garage door springs here is oil tempered versus zinc galvanized torsion spring.
For example torsion springs used for garage doors lift and lower garage doors that weigh hundreds of pounds.
Class i and class ii.
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.
Oil tempered springs for both garage door.
Simply put oiled torsion.
High durability oil tempered torsion springs are well known for their exceptional durability.
What they are and their pros and cons.
First the spring is brought to a high temperature before being quenched in an oil bath.
Still these springs are nice because they keep their tension and rarely ever need to be tightened.
Oil tempered garage door springs undergo a unique process to increase their tensile strength without introducing brittleness into the metal.
The wire which is used to make the spring is heated quenched in oil and then heated again.
Oil tempered wire mechanical springs and garage door springs are often called upon to do serious heavy lifting.