ISO 22705-3 Springs - Test for Cold Formed Cylindrical Helical Torsion Springs

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ISO 22705-3 testing. This standard specifies the characteristics of cold-formed cylindrical helical torsion springs of round wire and the corresponding measurement and test methods.

ISO 22705-3 is a standard that specifies measurement and test parameters for cold formed cylindrical helical torsion springs. Such springs are widely used in a variety of applications, including automotive, aerospace and industrial machinery.

The standard provides guidance on the following parameters:

• Basic dimensions: This includes the wire diameter, the outside diameter, and the free angle of the spring.
• Torque angle specifications: This involves measuring the torque required to rotate the spring to a given angle and corresponding angle of rotation.
• Initial tension: This refers to the force required to rotate the legs of the spring when not loaded.
• Fatigue life: This involves subjecting the spring to a cyclic bending and twisting test to determine fatigue life.
• Strength limit: This is the maximum stress amplitude that a spring can withstand without failing after a certain number of cycles.
• Set: This is the amount of permanent deformation a spring experiences after repeatedly bending and twisting it.

ISO 22705-3 also provides guidelines for test equipment and procedures to be used for each of these parameters. By following these guidelines, manufacturers can ensure that their torsion springs meet required specifications and will reliably perform in their intended applications.

EUROLAB assists manufacturers with ISO 22705-3 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.