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Bolt tensioner Product List and Ranking from 5 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Dec 31, 2025～Jan 27, 2026
This ranking is based on the number of page views on our site.

Bolt tensioner Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Dec 31, 2025～Jan 27, 2026
This ranking is based on the number of page views on our site.

  1. 日本プララド Hyogo//Industrial Machinery
  2. トルテック 本社 Osaka//Industrial Machinery
  3. ノルトロックジャパン Osaka//Ferrous/Non-ferrous metals
  4. 4 池田金属工業 Osaka//Machine elements and parts
  5. 5 日本アイ・アール Hyogo//Machine elements and parts
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Bolt tensioner Product ranking

Last Updated： Aggregation Period:Dec 31, 2025～Jan 27, 2026
This ranking is based on the number of page views on our site.

  1. Bolt tensioner トルテック 本社
  2. Bolt tensioner for underwater bolt tightening, SUBSEA type 日本プララド
  3. High-precision bolt tensioner and axial force management tool | Japan Prarad 日本プララド
  4. "Super Bolt": Tightening large-diameter bolts with a single torque wrench. ノルトロックジャパン
  5. Super Bolt with Railway Vehicle Adoption Examples ノルトロックジャパン

Bolt tensioner Product List

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Bolt tensioner for underwater bolt tightening, SUBSEA type

Bolt tensioner for underwater bolt tightening, SUBSEA type

Large underwater bolt tightening tool. It can be easily attached even underwater, significantly reducing bolt tightening work time! Compatible with sizes M20 to M100.

■ The sub-sea type bolt tensioner features a split puller nut that clamps the bolt, allowing for easy installation even in underwater bolt tightening with long protrusions, significantly reducing the time required for bolt tightening work! (Especially effective for long anchor bolts and foundation bolt tightening.) ■ It reduces diver's working time for challenging large bolt tightening tasks underwater. ■ Nickel-plated coating to prevent rust. ■ Multiple bolts can be tightened simultaneously (parallel tightening) by connecting tensioners. ■ Hydraulic specification of 150 MPa, with a maximum pull stroke of 30 mm per operation. ■ It is also highly effective for bolt tightening tasks with long protrusions, beyond underwater bolt tightening work.

  • Other work tools
  • Torque wrench
  • Hydraulic Equipment

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Bolt tensioner

Bolt tensioner

In addition to "Standard," we also offer options such as "for Wind Turbines" and "for Underwater Operations"!

At Tortech Co., Ltd., we offer a range of "bolt tensioners" tailored to meet our customers' needs for efficient axial force management tools. The "Standard" model is compact and highly reliable, featuring safety through "over-stroke" and a link-hose system. In addition, we provide options such as "for wind turbines," which allows for connections with many tensioners through an optional 360-degree rotating swivel connection, as well as models for "underwater work" and "wind turbine foundation bolts." 【Standard Features】 ■ Compact and highly reliable ■ Safety through "over-stroke" ■ Link-hose system *For more details, please refer to the PDF document or feel free to contact us.

  • Other work tools

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Super Bolt with Railway Vehicle Adoption Examples

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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High-precision bolt tensioner and axial force management tool | Japan Prarad

High-precision bolt tensioner and axial force management tool | Japan Prarad

High-precision axial force management tool for large bolts from M20 to M300. Allows simultaneous parallel tightening of bolts, ensuring uniform tightening without variation in axial force!

- Supports large bolt tightening from M20 to M300. (Custom production possible from M16.) - Multiple bolts can be tightened simultaneously and uniformly in parallel by connecting bolt tensioners. The tightening axial force is uniform, preventing uneven tightening of flanges. (There is a record of simultaneously tightening 40 flange bolts in parallel.) - Bolts are pulled using hydraulic force, applying tensile load for tightening, which eliminates the influence of friction with the thread surface and seating surface. "Axial force can be managed directly," allowing for more accurate tightening through axial force management than torque management. - Features our unique ArmorMax protection with a super-hard surface finish. Excellent durability, wear resistance, and corrosion resistance maximize the lifespan of the tool. - The compact and lightweight bolt tensioner allows for bolt tightening even in confined spaces. Custom production is also possible. - Since the bolts are not twisted, there is no generation of friction heat, preventing galling between the nut and flange surface and seizing of the threaded parts. <For inquiries about purchasing or renting bolt tensioners> Please contact us for free demos, quotes, and material requests. Nihon Purarado Co., Ltd. TEL: 078-967-3556

  • Other work tools
  • Torque wrench
  • Hydraulic Equipment

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Bolt tensioner for wind turbines "GR LD Series"

Bolt tensioner for wind turbines "GR LD Series"

Bolt tensioner specially designed for bolt tightening applications in the wind power generation industry.

A bolt tensioner specially designed for blade/tower bolt applications. With a two-stage cylinder that operates at a maximum of 1500 bar, it allows for a small outer diameter, making it capable of meeting the requirements of almost all applications. This long-life model uses ultra-high-strength steel and features the most reliable state-of-the-art gear rotation system on the market. It is equipped with a positive stop function to prevent over-stroking and a safety flight prevention feature certified by SGS in case the puller is damaged.

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[Technical Information] The Mechanism of Super Bolts and the Principle of Preventing Breakage

[Technical Information] The Mechanism of Super Bolts and the Principle of Preventing Breakage

A bolt tensioner that can be tightened with just hand tools! A bolt that ensures reliable axial force.

This document introduces the reduction of the risk of fracture for super bolts. It explains the causes of fracture in large-diameter bolts and provides a detailed explanation of the process of generating axial force in super bolts and the absence of torsional stress. Our company has a dedicated support department. Please make use of it for product selection. [Contents] ■ What is a super bolt ■ Main causes of fracture in large-diameter bolts ■ Reducing fracture risk with super bolts ■ Summary *For more details, please refer to the PDF document or feel free to contact us.

  • bolt

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Bolt tensioner

Bolt tensioner

Tighten accurately to prevent galling and seizing of the threaded part.

The bolt tensioner allows for precise tightening by directly applying axial force to the bolt, regardless of the friction coefficient. Since accurate tightening force can be achieved, galling between the nut and flange surface, as well as seizing of the threaded part, does not occur. 【Features】 ○ Enables precise and uniform tightening ○ Prevents seizing of the threads ○ Simple and straightforward structure *For more details, please download the catalog and feel free to contact us. *Specifications and detailed information can be found in the catalog.

  • Hydraulic Equipment
  • Pipe Fittings

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

"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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