Torsion springs deliver a twist or rotational force and are used in various mechanisms, from a clothespin's clasp to a garage door's operation. Understanding torsion spring design as an engineer is important for creating effective mechanisms and maintaining safety. Incorrectly designed torsion springs can cause instability in systems like automobile suspensions, affecting the vehicle's safety and performance. Spring design does not just concern mechanisms, it also carries real-world implications. The goal here is to give you the necessary resources for understanding torsion spring design in depth.

Textbooks and Handbooks

Here is a set of resources pertaining to torsion spring design:

Helpful Websites and Calculators

Engineers utilize several digital tools when developing torsion springs. Some online tools that are available at no cost include:


Cooperating with manufacturers can supply hands-on experience and knowledge of the field. These professionals can provide assistance in spring design and selection. The following are some torsion spring manufacturers:

Acxess Spring: Acxess focuses on custom spring production. They have a spring calculator available on their website that is designed to aid engineers with their designs. Specifically, it provides calculations for determining the spring rate, which is a factor in determining the load needed for a spring to extend. Using this calculator can help to mitigate issues such as assembly failures or spring breaks.

Lee Spring: Lee Spring supplies both standard and bespoke spring solutions. Their seasoned engineers are on hand to provide advice about design specifications. If an application requires continuous angular rotation, the engineers at Lee Spring can propose the most suitable double-torsion spring design and materials based on the requirements of the application.

Century Spring: Century Spring holds a wide variety of torsion springs. They offer a detailed spring selection guide to assist with selection from their vast product offerings. This guide is created to help engineers select the correct spring, by considering the design parameters and anticipated performance traits.


Torsion springs play a role in many mechanical systems. The resources we mentioned -- including textbooks, handbooks, websites, and calculators -- provide useful data for creating effective spring designs. Forming relationships with skilled manufacturers can assist in developing design skills and results. Regardless of your torsion spring design needs, the offered resources simplify the process, aiding successful results.