A New Measurement Method of Bolt Tightening Forces Based on Simultaneous Loading of Torque and Compressive Force

Kazuya Mori, Yukitaka Murakami, Shinji Hashimura, Ryoichi Imai, Satoru Matsui

Research output: Contribution to journalArticle

2 Citations (Scopus)


A new measurement method of bolt tightening forces by simultaneous loading of torque and compressive force to a bolt has been developed. By simultaneous application of torque and compressive force to a bolt, the friction coefficients in threads and bearing surfaces are accurately detected separately in the process of tightening. Thus, the present method can control the tightening force of bolts within the error of ±10% for wide tightening forces under oil-free or lubricated conditions. The working efficiency of the present method is much better than that of the angle control method or the torque gradient control method because it is not necessary to measure the tightening angle and the friction coefficients in advance.

Original languageEnglish
Pages (from-to)2212-2217
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Issue number622
Publication statusPublished - 1998
Externally publishedYes



  • Bolt
  • Fixing Element
  • Friction
  • Tightening Force
  • Torque Control Method
  • Tribology

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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