range of bolt tensioners offer a high-load, low profile solution for space-restricted applications demanding high and accurate preloads, such as wind turbines.
The tensioners exert a high load with both the multi-stage, ideal for radial obstruction applications and the single stage, for vertical obstruction applications.

More Information

  • Standard (M24 to M64 held in stock)
  • Specials are as common as standards
  • Predominantly Wind Turbine application (extensive data base held)
  • Other typical applications:
    • Crane slew rings
    • Tunnel boring machines
    • Gas turbine casings
  • Designed for high loads – up to 95% yield stress for 10.9 bolts
  • Spring loaded gear drive for nut rotation
  • Automatic piston retraction and positive stop facility
  • Single stage design for vertical obstruction applications
  • Multi stage design for radial obstruction applications
  • Suitable for height restricted areas
  • Durable coating on all components
  • Joint misalignment compensation features
  • Internal fail safe mechanism
Testing & Certification
Boltight is LRQA certified for quality and environmental assurance to ISO 9001: 2015. All tools are assembled, filled with oil and pressure tested prior to despatch.

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