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.