Choosing the right compression spring end type can present a challenge, so it’s best to evaluate end types based on the specific variables involved. There are four main types of compression spring end types, along with other customization options you can choose from if you have a specific design. Each end type is intended to deal with a certain type of compression. The way the spring works is determined by the relationship between the design of the spring and the forces that will be applied to it when placed in a vertical position.
Here are your options when it comes to compression spring end types.
Closed and Squared Spring End
The closed and squared design is the most popular style for compression spring ends. This is a type of spring that will remain standing in a vertical position because the base coil is flat. The ends are closed during the spring manufacturing process, and this ends up reducing the cost. This also makes the closed and squared end one of the most affordable spring options.
Closed and Ground Spring End
This spring stands completely vertically even in situations where the slenderness ratio is large. This type of spring end also has an extra feature that is done during the spring manufacturing process. The added step makes it more expensive than the closed and squared type. However, it is still very popular because it is useful for certain specific purposes. This is the ideal spring for situations where there is a need for a spring that will not be used over any type of aperture, for example.
Double Closed Spring End
As the name suggests, this type of spring end has two completely closed ends on each side. This adds stability to the spring because it can be reversed with almost no effect. This spring type can also be manufactured directly without additional labor, which reduces the per-unit cost. However, the ends also require more material than the single closed end, so it is a trade-off. This is the best spring for maximum stability because it runs the lowest risk of buckling.
Compression Spring, Open End Style
Open-ended compression springs are different because this spring doesn’t stand vertically without some type of aperture. This could be a shaft, mandrel or hole. It is longer than a spring with closed ends, and this has an effect of weakening the entire spring. It also adds additional spirals to the ends; however, this won’t affect the total height of the spring. This is not a common type of spring because it is only useful in certain situations. This spring will not be able to maintain its position without insertion points.
Types of Compression Springs, Slenderness Ratio
The slenderness ratio is simply the term that describes the relationship between the spring and the amount of compression it can take without buckling. It is the one specification that determines the type of spring for any given situation. Each type of spring has a different slenderness ratio. Before buying any particular spring, carefully evaluate the function and purpose of the spring.