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Draw bar springs
Draw bar springs in stainless spring steel
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A draw bar spring consists of one compression spring and two brackets. With one bracket at each end, the compression spring converts to an extension spring. The brackets are stronger than the regular loops on extension springs. Draw bar springs are most often used in connection with mooring boats.
A draw bar spring is also sometimes called a boat spring.
Stainless steel:
DIN 17224 AISI 302 WERKSTOFF NR. 1.4310 EN Norm 10270-3
Working temperature between -200 ºC and +250 ºC
The service life of a spring is generally very difficult to define. A large number of parameters come into play, and it is therefore impossible to define a service life.
Parameters with a significant influence on service life include: Installation, installation method, number of movements, vibrations, shocks, torsion, length of travel, non-axial travel, temperature, wear against other surfaces, environment of use, any cleaning agents, lateral impacts, etc.
Applying the maximum load to the spring or exceeding it will shorten its service life and may cause it to become permanently distorted.