Encapsulated opening aid

Gekapselte Drehfederöffnungshilfe


Clean room, hazardous environment, biotechnology, pharmaceutical industry, food industry



  • Internal spring (sealed)
  • Spring available in different sizes, therefore adaptable to different torques
  • Compact design
  • Almost frictionless rotation
  • Spring assembly easy to disassemble
  • Replaceable without welding
  • Hygienic design
  • Approved for ATEX Zone 1
  • Maximum torque: 190Nm
  • Spring is designed for lifetime
  • Spring force is only effective up to a cover opening angle of approx. 90°
  • Stop for opening angle exchangeable (also for other opening angles)
  • Locking bolt can be retrofitted in end position (screwed)


Problem cases of the conventional torsion spring opening aid
  • Abrasion of metal particles due to friction between torsion spring and bearing or between the individual coils
  • Difficult to clean
  • Unhygienic design
  • Only approved for ATEX Zone 2
  • Lid could fall shut in case of spring breakage
  • Maximum torque: approx. 100Nm


Distributor locator

Find representative

Please get in touch with us.