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Bolt tensioner Product List

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Super Bolt with Railway Vehicle Adoption Examples

One torque wrench can handle large diameter fastening of M30 and above! Mechanical bolt tensioner.

The "Super Bolt" is a mechanical bolt tensioner. It allows for the tightening of large diameter bolts using standard tools alone, achieving the desired axial force with astonishing precision. Thanks to its patented structure, it does not loosen even under intense vibrations. Sizes are available starting from M16, and other sizes can also be accommodated. 【Features】 ■ Can tighten large bolts using standard tools alone ■ Does not loosen even under intense vibrations ■ Size: Starting from M16 *For more details, please refer to the PDF document or feel free to contact us.

  • bolt
  • Other metal materials

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"Super Bolt": Tightening large-diameter bolts with a single torque wrench.

An innovative product that can tighten huge bolts and nuts that cannot be tightened by human strength with just one torque wrench.

A mechanical bolt tensioner developed in 1984 at the request of US Steel, the largest steel company in the United States. By distributing the enormous torque required to tighten large-diameter bolts into smaller torque, it dramatically improves work safety. It also achieves remarkably accurate fastening force, allowing for work in high and confined spaces without issues. The use of electric tools and air tools further reduces work time, dramatically shortening downtime caused by operations and enabling low-cost operations. 【Features】 ■ Incredible axial force accuracy due to patented structure (over three times the accuracy of conventional methods) ■ Large-diameter bolts can be fastened with just one torque wrench ■ Does not depend on the skill of the operator, ensuring accurate fastening force regardless of who performs the work ■ Exceptional axial force stability prevents loosening even under intense vibrations ■ Strong against loosening that does not involve reverse rotation during thermal cycles, thanks to elastic fastening ■ Usable without issues in confined and elevated spaces *For details, please refer to the catalog or contact Nord-Lock Japan. *Beware of imitation products that resemble the appearance. They do not have equivalent functions due to patented technology. Nord-Lock Japan also provides various technical support. Please feel free to consult us.

  • bolt
  • Other work tools

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