An integral flexure for rotary actuators in hard disk drives

Gih Keong Lau*, Guojun Qi, Andita Primanti, Fengmin Liu, Hejun Du

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations


This paper presents a new design of an integral flexure that serves both the functions of a load beam and a gimbal for application in rotary actuators of hard disk drives (HDD). The design has optimized geometry that improves resonant frequency while retaining adequate rotational flexibility. Prototypes of the integral flexure are fabricated from a single piece of stainless-steel foil by photochemical machining techniques without involving welding and extra alignment. Its performance is simulated using finite element method and resonant frequencies of its prototype are measured. The numerical simulation and experimental results are in good agreement.

Original languageEnglish
Pages (from-to)248-256
Number of pages9
JournalSensors and Actuators, A: Physical
Issue number2
StatePublished - 5 Jul 2004


  • Hard disk drive
  • Integral flexure
  • Integrated suspension
  • Optimum design

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