Bolt tensioner - Company Ranking(6 companyies in total)
Last Updated： Aggregation Period:Jul 30, 2025〜Aug 26, 2025
This ranking is based on the number of page views on our site.
Display Company Information
| Company Name | Featured Products | ||
|---|---|---|---|
| Product Image, Product Name, Price Range | overview | Application/Performance example | |
| The bolt tensioner (hydraulic tensioner) pulls and tightens bolts using hydraulic pressure, preventing damage to the surface of the flange and the seating surface of the nut. Additionally, tightening through axial force management eliminates the influence of friction, achieving higher precision tightening compared to torque management. Since it is a puller exchange type, it can accommodate various bolt sizes with a single load cell, making it highly versatile. This system is optimal for managing the axial force of large bolt tightening. By using multiple units, large bolts can be tightened simultaneously and uniformly (for example, tightening 20 flange bolts at once). We will manufacture it with optimal customization according to your application. | Plarado Bolt Tensioner ■ Bolt tightening achievements in the construction of Tokyo Skytree. ■ Bolt tightening achievements in the assembly of the world's largest shield machine. ■ Cable band bolt replacement work on the Kanmon Bridge. ■ Construction of Germany's first offshore wind power generation project, 5.0MW. - Wind power plants, thermal power plants, hydroelectric power plants, nuclear power plants, etc. - Gas turbines - High-pressure injection molding machines - Marine diesel engine covers. - Flange bolt tightening. - Assembly and installation of shield machines. - Rolling mills - Work in areas where reaction cannot be obtained. - Bolt tightening locations that are narrow and where tightening tools cannot fit. | ||
| ■ Ideal for tightening blade bolts and foundation anchor bolts in wind power generation. ■ A multi-stage high axial force type with a built-in two-stage piston, allowing for a slim body while delivering significant tightening axial force. ■ Equipped with an over-stroke prevention device and an automatic return spring. ■ The hydraulic joint features a 360-degree rotating swivel. ■ The bolt tensioner can simultaneously and uniformly tighten multiple large bolts. ■ Provides higher precision tightening through "axial force management" compared to torque management. ■ Tightens bolts by pulling them with hydraulic force, preventing damage to the flange surface and nut seating. Additionally, it allows for high-precision tightening due to the absence of friction effects. ■ Designed and manufactured with optimal customization according to application needs. ■ Available for sale and rental. | ■Foundation bolt tightening for wind power generation. ■Assembly of wind power generation, nacelle and yaw bearing. ■Bolt tightening for the blade bearing section of wind turbines. ■Foundation bolt tightening for construction work. ■Flange bolt tightening. ■Tightening of large bolts in the M24 to M56 class. Active in various industries, widely engaged in large bolt tightening operations on site. | ||
| ■ The puller nut of the bolt tensioner is split into two parts to clamp the bolt, making it easy to attach even for underwater bolt tightening with a long protrusion, significantly speeding up the tightening work time! (Especially effective for long anchor bolts and foundation bolt tightening.) ■ Reduces diver's working time for challenging underwater and subsea large bolt tightening. ■ Nickel-plated coating to prevent rust. ■ Multiple bolts can be tightened simultaneously (parallel tightening) by connecting tensioners. ■ Twin hydraulic joints / single can be selected. ■ Bolt tensioner with a hydraulic specification of 150 MPa. ■ The maximum pull stroke of the tensioner is 30 mm, the longest in a single operation. ■ Custom design for special specifications is also available. ■ Can be used for long bolt tightening in applications other than underwater bolt tightening. | The subsea bolt tensioner is used for bolt tightening operations in underwater and marine environments, including offshore wind power generation and submarine cable construction. It is utilized for large bolt tightening tasks with long protrusions at thermal power plants, hydroelectric power plants, chemical plants, petrochemical complexes, steel mills, and construction sites, such as the tightening of foundation anchor bolts. | ||
|
---
--- |
--- | ||
日本プララド
-
- Featured Products
-
Bolt tensioner (axial force management tool) | Japan Pralard
- overview
- The bolt tensioner (hydraulic tensioner) pulls and tightens bolts using hydraulic pressure, preventing damage to the surface of the flange and the seating surface of the nut. Additionally, tightening through axial force management eliminates the influence of friction, achieving higher precision tightening compared to torque management. Since it is a puller exchange type, it can accommodate various bolt sizes with a single load cell, making it highly versatile. This system is optimal for managing the axial force of large bolt tightening. By using multiple units, large bolts can be tightened simultaneously and uniformly (for example, tightening 20 flange bolts at once). We will manufacture it with optimal customization according to your application.
- Application/Performance example
- Plarado Bolt Tensioner ■ Bolt tightening achievements in the construction of Tokyo Skytree. ■ Bolt tightening achievements in the assembly of the world's largest shield machine. ■ Cable band bolt replacement work on the Kanmon Bridge. ■ Construction of Germany's first offshore wind power generation project, 5.0MW. - Wind power plants, thermal power plants, hydroelectric power plants, nuclear power plants, etc. - Gas turbines - High-pressure injection molding machines - Marine diesel engine covers. - Flange bolt tightening. - Assembly and installation of shield machines. - Rolling mills - Work in areas where reaction cannot be obtained. - Bolt tightening locations that are narrow and where tightening tools cannot fit.
Multi-stage bolt tensioner (for wind power generation) - Nippon Pralado
- overview
- ■ Ideal for tightening blade bolts and foundation anchor bolts in wind power generation. ■ A multi-stage high axial force type with a built-in two-stage piston, allowing for a slim body while delivering significant tightening axial force. ■ Equipped with an over-stroke prevention device and an automatic return spring. ■ The hydraulic joint features a 360-degree rotating swivel. ■ The bolt tensioner can simultaneously and uniformly tighten multiple large bolts. ■ Provides higher precision tightening through "axial force management" compared to torque management. ■ Tightens bolts by pulling them with hydraulic force, preventing damage to the flange surface and nut seating. Additionally, it allows for high-precision tightening due to the absence of friction effects. ■ Designed and manufactured with optimal customization according to application needs. ■ Available for sale and rental.
- Application/Performance example
- ■Foundation bolt tightening for wind power generation. ■Assembly of wind power generation, nacelle and yaw bearing. ■Bolt tightening for the blade bearing section of wind turbines. ■Foundation bolt tightening for construction work. ■Flange bolt tightening. ■Tightening of large bolts in the M24 to M56 class. Active in various industries, widely engaged in large bolt tightening operations on site.
Bolt tensioner for underwater bolt tightening, SUBSEA type
- overview
- ■ The puller nut of the bolt tensioner is split into two parts to clamp the bolt, making it easy to attach even for underwater bolt tightening with a long protrusion, significantly speeding up the tightening work time! (Especially effective for long anchor bolts and foundation bolt tightening.) ■ Reduces diver's working time for challenging underwater and subsea large bolt tightening. ■ Nickel-plated coating to prevent rust. ■ Multiple bolts can be tightened simultaneously (parallel tightening) by connecting tensioners. ■ Twin hydraulic joints / single can be selected. ■ Bolt tensioner with a hydraulic specification of 150 MPa. ■ The maximum pull stroke of the tensioner is 30 mm, the longest in a single operation. ■ Custom design for special specifications is also available. ■ Can be used for long bolt tightening in applications other than underwater bolt tightening.
- Application/Performance example
- The subsea bolt tensioner is used for bolt tightening operations in underwater and marine environments, including offshore wind power generation and submarine cable construction. It is utilized for large bolt tightening tasks with long protrusions at thermal power plants, hydroelectric power plants, chemical plants, petrochemical complexes, steel mills, and construction sites, such as the tightening of foundation anchor bolts.
-
日本プララド
Membership (free) is required to view all content.
Already a Member? Log In Here
