Torsion Spring Calculations & Stress Check
The Springulator is able to generate a variety of information that can assist with the design of your torsion spring. Enter the spring's diameter, number of coils (N), deflection (T) and wire diameter to calculate data including your torsion spring's:
By selecting your material type, the Springulator torsion spring calculator is also able to check your design to see if it falls within allowable stress limitations. Click the button and a stress chart will be generated that shows the acceptable bending stress limitations for your part, and the amount of stress at different degrees of deflection at a load height.
The Springulator torsion spring calculator is designed for engineers and designers. It has been built with a number of checks that will not allow you to calculate a spring if the data you have entered will not result in a feasible design. If you aren't sure the Springulator is operating correctly, please enter the following data and check the results using the Spring Calculation Samples Values and Results on our How to Use page.
Torsion Spring Radii
It is important to use the proper bend radii on a torsion spring to avoid part breakage. Breakage (fracture) will sometimes occur at the bends on torsion springs when the radius is too tight (small). Stress concentration factors can be estimated, however, it is best to design the radius to be 1.5 times the diameter of the material. Please contact your Newcomb Spring engineer for assistance with your torsion spring design prior to manufacturing.
Torsion Spring Direction of Wind
It is important to consider the direction of a spring's wind, especially if the wind on your torsion spring closes up (tightens up) during deflection (movement). To determine a torsion spring's direction of wind simply hold the spring in your hand with your fingers placed around the outside of the body and your thumb pointing straight up. If the last coil ends in the same direction that your fingers are pointing, that is the hand (direction of wind) of the spring. Read more on wind direction of a torsion spring.
Other Torsion Spring Design Considerations
Our online torsion spring manufacturing and torsion spring design resources includes a variety of information that may assist in your spring design.
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Torsion Spring Calculations & Quotes
The Springulator is a useful tool for users who wish to check the stress of a design, calculate torsion spring functions and test spring capabilities. Please note all results are for design purposes only and are not guaranteed accurate. Click here to begin to use the Springulator torsion spring calculator, or visit our extension spring quote page if you would like to send us a CAD drawing or input your extension spring specifications.