Sunday, November 27, 2016

Kinetrol Spring Return Units: Spiral Torsion Springs Are Key

Spiral torsion spring
Simple view of spiral
torsion spring (protruding
tab and hex center
are loading points.)
Spiral torsion springs are found in many places - clocks, watches, timers ... and Kinetrol spring return units!

Capable of storing much more energy than a typical compression spring, and working in smaller, more compact packages, spiral torsion springs for valve and damper actuation are a proven step-up over helical compression springs.

When a torque is applied to a spiral torsion spring, an angular displacement is created between the first and second loading points, the coil deflects (tightens), and the spring material is placed under stress, exerting a linear (to the degree of rotation) rotational "output" torque,  which drives the spring's rotation. Practically speaking, spiral torsion springs allow for lower torque loss, lower torque stress, and much greater reliability for use in valve and damper actuation.

Kinetrol Spring Return
Kinetrol Spring Return Unit
(note cutaway revealing
spiral torsion spring.)
Along with the inherent advantages of spiral torsion springs, additional benefits of the Kinetrol spring return unit are:

  • Separate housing for modular assembly, easily retrofitted
  • Sealed, non-breathing housing: Protects spring in corrosive environments
  • Adjustable pretension for 'balanced' air and spring stroke torques: Various combinations available for balanced / optimized torques at various air pressures
  • Keeper plates available to ensure safe handling of pretensioned springs
  • Available with ISO/DIN female drive and mounting
The combination of the spiral torsion spring reliability plus the advanced engineering design allow Kinetrol to offer a guarantee against failure of the spring unit for the lifetime of the mating actuator!

For more information, contact Kinetrol USA by visiting www.kinetrolusa.com or calling 972-447-9443.