HELICODISC ®

THE alternative to the disc spring stack

More than 30 years ago, RÖHRS developed a new spring arrangement consisting of flat wire coil springs screwed into one another. The "HELICODISC®" brand was developed and protected for this spring arrangement.

Since the 1980s, Röhrs has been successfully marketing spring assemblies of the "HELICODISC®" brand. They are therefore tried and tested machine elements that often replace the well-known layered disc spring stack. The uninterrupted fiber flow of the starting material increases the service life and reduces the risk of breakage of the springs of the "HELICODISC®" brand. In principle, the characteristic curve of each column of disc springs can be implemented using a “HELICODISC®” brand spring. The increase in force is proportional to the spring deflection, since only bending stress occurs in the spring steel strip.

Freigestellte Nahaufnahme einer Schraubentellerfeder

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The decisive advantages of the RÖHRS HELICODISC®:

  • One-piece component, no disintegration into individual parts
  • Easy, cost-saving installation and maintenance
  • Extremely high spring force with a minimal outer diameter and small hysteresis
  • No erroneous diagram influence due to incorrect stratification and fat influence
  • Long service life due to production from strip material with uninterrupted fiber flow
  • High level of operational reliability, since no spring deflection is lost in the event of a spring break, which means that the spring force remains almost unchanged
  • Characteristic curve can be implemented according to customer requirements
  • No mandrel or sleeve friction, as a continuous spring guide is not required if the spring stiffness is appropriate
  • High resistance to negative environmental influences and extreme temperature fluctuations
  • Even small series can be produced economically for each mounting frame

HELICODISC® brand powerhouse

4-fold screwed coil spring power pack. Used, for example, in hydrogen fuel cells with high energy density (satellite space travel / submarines).

Benefits:

  • Extremely high spring force with a minimal outer diameter  Example: With an outer diameter of 18 mm, a spring force of 10 kN is achieved and with an outer diameter of 23 mm, a spring force of 25 kN.
  • Characteristic curve can be implemented according to customer requirements
  • Maximum service life and operational reliability
  • Easy to assemble as it is a one-piece component
  • Small hysteresis, minimal wear

Application examples

HELICODISC® are used across all sectors as a substitute for disc spring stacks. Wherever high forces are required with a small stroke and small installation space.

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