industrial-springs.com 
Extension spring without eyes
Extension springs without loops, made of music wire and stainless steel wire
Extension springs without ends offer a flexible solution for designs where the spring needs to be mounted directly or combined with separate fittings and end loops. They generate a pulling force when extended and are suitable for a wide range of industrial and mechanical applications.
An extension spring without ends allows for a more customized mounting setup, as the spring lacks fixed loops at the ends. This makes them particularly useful when the mounting solution needs to be tailored to a specific design.
Extension springs are used in machinery, appliances, mechanical assemblies, and various industrial installations, among other things. Depending on the spring's dimensions and material, it can be adapted to meet specific requirements regarding load, extension, and operating range.
Our extension springs without ends do not have a predefined force or travel distance. They are manufactured to be cut to length and used for prototypes and testing.
We have developed end loops designed to fit our springs available in lengths of 300 mm and 1,000 mm. View our selection here.
The wire is certified in accordance with DIN 17223 Class C Wire WERKSTOFF NO. 1.1200 – EN Norm 10270-1
Working temperature between -30 ºC and +120 ºC
Recommended for use in dry environments.
The wire is certified in accordance with DIN 17224 AISI 302 WERKSTOFF NO. 1.4310 – EN Norm 10270-3
Working temperature between -200 ºC and +250 ºC
Can be used in dry and humid or wet environments.
The series is produced with the aim that it can be used for tests and prototypes. There are therefore no tolerances on this series.
As this series is designed for testing, the cut spring’s coils will vary from spring to spring, and so the spring constant cannot be defined.
We currently do not offer datasheet or 3d-cad files for this product. Contact us for more information.
Normally right-handed The force and application is not affected by the direction of wind.
Standard extension springs are not defined with a specific direction of wind. Depending on production, the springs may be either right or left wound.
When using springs for baby hammocks or baby bouncers, for instance, or other structures where a person is suspended from a structure in some way, you must be aware of the following:
Spring deformities or breakages
A spring is a technical object that can be deformed, or that may break during use. There may be invisible defects in the alloy of a spring wire, and during the manufacture of the spring defects may also occur that can weaken the spring. Improper use of a spring can also reduce the service life of a spring and result in the spring becoming deformed or breaking.
A spring must always be dimensioned so that the spring always incorporates a safety factor that corresponds to the risk in use.
Safety device – IMPORTANT!
If a spring is to be used in a structure where a person is suspended in some way from the structure, and the spring will be a load-bearing element between the person and the structure, a separate appropriate safety device must be installed between the person and a fixed point. This ensures that the person cannot fall down if the spring becomes deformed or breaks. It is always the user of a spring – in any structure where persons can fall or otherwise injure themselves – who is responsible for ensuring that the structure is correctly designed so that no personal injury can result if a spring becomes deformed or breaks.
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