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Tensioner Product List and Ranking from 15 Manufacturers, Suppliers and Companies | IPROS GMS

Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.

Tensioner Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 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. VALQUA TORQUE SYSTEM CO., LTD. Aichi//Industrial Machinery
  3. エナパック 本社　営業部 Saitama//Machine elements and parts
  4. ノルトロックジャパン Osaka//Ferrous/Non-ferrous metals
  5. Orbray Tokyo//Other manufacturing
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Tensioner Product ranking

Last Updated： Aggregation Period:Feb 18, 2026～Mar 17, 2026
This ranking is based on the number of page views on our site.

  1. Bolt tensioner for underwater bolt tightening, SUBSEA type 日本プララド
  2. Multi-stage bolt tensioner (for wind power generation) - Nippon Pralado 日本プララド
  3. Wire tensioner for wire bonding Orbray
  4. 4 Wind Turbine Dedicated Bolt Tensioner 'WTB' VALQUA TORQUE SYSTEM CO., LTD.
  5. 4 Hydraulic Bolt Tensioner "HM Series" エナパック 本社　営業部

Tensioner Product List

1～30 item / All 33 items

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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.

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  • Torque wrench
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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.

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Standard Bolt Tensioner 'CTST'

Standard Bolt Tensioner 'CTST'

Compatible with M20 to M100 in 6 types! It consists only of a plunger, load cell, and bridge.

The "CTST" is a simple structure bolt tensioner that allows for easy maintenance, including seal replacement, to be performed by the user. It is a bolt tensioner that enables advanced axial force management by pulling the bolt up with high-pressure hydraulics and tightening the nut in the meantime. This model is particularly simple, consisting only of a plunger, load cell, and bridge. By combining six types of load cells with various plungers and bridges, it accommodates a wide range of sizes. 【Features】 ■ Lightweight and simple ■ Self-maintenance is possible ■ Compatible with M20 to M100 in six types *For more details, please refer to the PDF document or feel free to contact us.

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Wind Turbine Dedicated Bolt Tensioner 'WTB'

Wind Turbine Dedicated Bolt Tensioner 'WTB'

Recommended for areas with narrow bolt pitch! Slim body integrated bolt tensioner.

The "WTB" is a bolt tensioner designed to work efficiently within the limited workspace of a wind turbine. It is an integrated unit with no separate parts. The lower part is tapered in a circular shape, minimizing interference with neighboring components even in wind turbines with narrow bolt pitches. It has been adopted as a designated tool by many companies, including the Spanish company Gamesa, and its quality and track record are well-established. 【Features (partial)】 ■ Safety Plunger Bar - Structural measures are in place to prevent the main body from being ejected in the event of plunger bar breakage. ■ Snap Down Disk - Automatically assists in attaching to nuts, allowing for smooth setup. ■ 360° Swivel Joint - Makes hose connection and handling easy, preventing obstruction even in tight spaces. *For more details, please refer to the PDF document or feel free to contact us.

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Hydraulic Bolt Tensioner "HM Series"

Hydraulic Bolt Tensioner "HM Series"

Lightweight and compact! It demonstrates high bolt load capacity and excellent performance.

The "HM Series" is designed to fit all standard flanges and features a hydraulic bolt tensioner with a 30% increase in load capacity compared to conventional models. It has a long stroke of 15mm (9/16 inch), eliminating over-stroking. Additionally, the safety of handling is improved with a non-slip grip, and we also offer the "GT Series," which is suitable for a wider range of tasks. 【Features】 <HM Series> ■ 15 types of load cells from M20 to M100 or 3/4" to 4" ■ Twin ports for quick connection of multiple tools ■ Maximum bolt load capacity of 150MPa ■ Captive socket eliminates the risk of falling objects ■ Interchangeable adapter kits available ■ Improved handling safety with a non-slip grip *For more details, please refer to the PDF document or feel free to contact us.

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Wire railing products

Wire railing products

Blend into the space without obstructing your view! Achieving a simple shape and compact design.

We handle "wire railing products." The tensioners boast a high-quality texture and excellent design, featuring a simple and easy-to-handle compact design that combines functionality and safety. With excellent workability that allows for easy installation by one person, it protects the boundary between homes, buildings, and their environments without breaking them, preserving them in their natural state. The structure prevents slack with a tension spring, allowing for various installations on horizontal, sloped, and wall surfaces. 【Features (excerpt)】 ■ High-quality texture with reduced gloss ■ Easy installation using only a dedicated wrench and a 5mm hex key ■ Can be installed up to a maximum length of 6m ■ Tension adjustment is simple ■ No variation in strength regardless of who performs the installation *For more details, please refer to the PDF document or feel free to contact us.

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Stairs, balcony, wire handrail, rope tensioner

Stairs, balcony, wire handrail, rope tensioner

Simplicity is best.

This is an announcement from Mazda Metal Works Co., Ltd. regarding "Staircase, Balcony, and Wire Handrail Rope Tensioners."

  • others
  • Tensioner

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Stairs, balcony, wire handrail, tough tensioner

Stairs, balcony, wire handrail, tough tensioner

Blending into the space: Simple & Compact.

The new tough tensioner, which does not obstruct the field of vision and makes the space feel larger, is designed with a high-quality texture and excellent design, and it is unparalleled in terms of functionality and safety.

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Wood Installation Dedicated Tensioner "Wood Tensioner"

Wood Installation Dedicated Tensioner "Wood Tensioner"

We aimed to ensure that our design does not interfere with the creator's space-making (that the hardware is inconspicuous).

The "Wood Tensioner" is a dedicated tensioner for wood installation that can be embedded into the wood at both ends, allowing it to be unobtrusive and creating a sense of even more space compared to conventional products. The main fittings are primarily made of SUS304, and the wire is made of SUS316, taking into account texture and rust prevention. 【Features】 ■ Design with embedded main fittings ■ The fittings not protruding contribute significantly to both aesthetics and safety ■ Wire can be cut and adjusted on-site ■ Easy installation by one person *For more details, please download the PDF or feel free to contact us.

  • Other metal materials
  • Tensioner

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Auto tensioner

Auto tensioner

Always maintain the tension of belts and chains at an appropriate level to reduce noise and improve lifespan!

We would like to introduce the "Auto Tensioner" that we handle. This device absorbs changes in tension caused by temperature fluctuations in the engine, decreases in tension due to the aging of timing belts, chains, and accessory belts, as well as changes in tension due to fluctuations in engine RPM, ensuring that the tension of belts and chains is always maintained at an appropriate level. There are three types available: for timing belts, timing chains, and accessory belts, all of which adopt a hydraulic system with excellent damping performance. Compared to fixed tensioners, it can improve belt lifespan. 【Features】 ■ Excellent tension adjustment function with hydraulic damping performance ■ Prevention of belt flutter ■ Tension adjustment function in response to temperature changes ■ Possible improvement in belt lifespan compared to fixed tensioners ■ Three types available for timing belts, timing chains, and accessory belts *For more details, please download the PDF or feel free to contact us.

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  • Belts and pulleys
  • Chains and sprockets
  • Drive system parts
  • Tensioner

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Rubber spring lost "tensioner"

Rubber spring lost "tensioner"

Prevention of belt and chain slack; automatic maintenance of proper tension.

By attaching an arm to the suspension unit and setting rollers or sprockets, it can be used for auto-tensioning, pressure rollers, and dampers. The outer shell has a flange shape, allowing for easy installation with a single center bolt. Additionally, you can select the mounting holes for the idler based on the load range, accommodating a wide range of loads. - SE model without idler - RSE model with roller idler set belt tensioner. - NSE model with sprocket idler set is also available. 【Features】 - Automatically maintains the proper tension of belts and chains, contributing to the efficiency of power transmission and longevity. - Reduces vibrations, impacts, and abnormal noises caused by flutter due to the elongation of belts and chains. For more details, please contact us or download the catalog.

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"Voltite" Evolutionary Bolt Tensioner

"Voltite" Evolutionary Bolt Tensioner

An evolved hydraulic tensioner that overcomes the challenges of conventional tensioners, such as "too heavy," "does not fit in narrow spaces," and "oil leaks with repeated use."

The hydraulic bolt tensioner "Boltight," a member of the Nord-Lock Group, was born as an evolved version re-invented by the engineer Fred Heaton, who originally developed the tensioner, to address the challenges faced by the tensioner itself. These challenges include common disadvantages of hydraulic tools like tensioners, such as being "too heavy and difficult to work with," "leaking oil after repeated use," and "not being able to be installed in tight spaces." All of Boltight's tensioners have been significantly lightened to the extreme, utilizing in-house developed bridges and seals to reduce the weight of the tensioner. Additionally, the durability for repeated use has greatly improved through technologies such as in-house developed seals. Furthermore, we can flexibly customize the shape and size for areas where space constraints prevent standard applications, delivering them with the same lead time as standard products.

  • Torque wrench
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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
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  • Tensioner

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Points to consider when using a storage tensor.

Points to consider when using a storage tensor.

Choose specifications that match the desired tension! It is also possible to change the direction of the eyelet guide installation.

Here are some points to consider when using the "Storage Tensioner," which achieves stable tension through arm movement. By changing specifications such as the difference in total length, reducing the number of bars to alter the bending angle, or adjusting the thickness of the built-in spring's linearity, it is possible to change the tension. By modifying specifications or changing the wire diameter of the spring, you can achieve the tension that suits your company. Additionally, the eyelet guide through which the thread passes is made of ceramic, and you can choose the surface treatment between standard and mirror finish. For example, a mirror finish can reduce friction for twisted threads. You can also change the orientation in which the eyelet guide is installed. [Points to Consider When Using] ■ Choose specifications that match the desired tension ■ Surface treatment and installation orientation of the eyelet guide *For more details, please refer to the related links or feel free to contact us.

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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

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Multi-stage bolt tensioner (for wind power generation) - Nippon Pralado

Multi-stage bolt tensioner (for wind power generation) - Nippon Pralado

In addition to bolt tightening work for wind power generation, this is a slim large bolt tightening axial force management tool that can be used in narrow spaces, suitable for M24 to M64 sizes. It features a built-in automatic return spring for added safety.

■ Equipped with an automatic return spring to prevent forgetting to reset to zero, ensuring safety and improving work efficiency by eliminating the need to return the puller to zero stroke each time. ■ The two-stage piston design makes the main body slim, suitable for tightening bolts in narrow spaces, and delivers high tension for tightening force. ■ The gearbox is designed for quick nut seating with a ratchet wrench. ■ Long lifespan, designed for a minimum of over 10,000 pressure cycles. ■ The drive socket features a spring-loaded snap-down structure for quick installation onto the nut. ■ No alignment is needed when attaching to the nut. ■ A tightening tool for axial force suitable for narrow space blade bolt tightening, nacelle frame bolts, hub bolts, and foundation anchor bolts for offshore and onshore wind power construction. ■ Also effective for tightening large bolts from M24 to M64 for applications other than wind power. <For inquiries regarding the purchase or rental of bolt tensioners> Please contact us for free demos, quotes, and material requests. Nihon Purarado Co., Ltd. TEL: 078-967-3556

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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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Underwater operation / Subsea tensioner

Underwater operation / Subsea tensioner

A solution specialized for underwater applications, coated with highly corrosion-resistant nickel plating.

The sub-tensioner is designed to fit high-pressure seals made from proprietary composite materials and can be installed directly without any adjustments. <Main Benefits> ● Completely prevents oil leaks with in-house developed high-strength seals ● High corrosion resistance due to nickel plating ● Compatible with all standard pipe flanges ● Surface is treated for slip resistance, making it easy to handle ● Comes with detailed operation manual, maintenance manual, and safety manual

  • bolt
  • Tensioner

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TSR+ Auto Return Tensioner

TSR+ Auto Return Tensioner

High-speed, simple, safe, and highly precise operation achieved with an auto-return tensioner.

◆Implementation of the industry's fastest automatic piston return function Equipped with a super-strong spring, it returns to its original position at four times the speed of conventional products, completely eliminating the need for manual operation. This tensioner combines reduced work time, simple operability, work surface safety, and robustness. >>Features Reliability that prevents performance degradation of the tensioner A safety valve prevents over-stroking due to excessive pressure, protecting against seal blowouts and exposure of operators to discharged oil. It features a unique surface treatment technology that maintains its effectiveness even in harsh environments over the long term. Improvements in sealing technology enable high-performance performance through high-cycle usage.

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Basic Bolt Tensioner 'PD Series/BR Series'

Basic Bolt Tensioner 'PD Series/BR Series'

A tensioner that makes the complex task of tightening foundation bolts easier and takes safety into consideration.

In the wind turbine assembly project, tightening the foundation bolts is one of the most complex tightening tasks. Factors such as dirt, misalignment, rust, elongation control, and oil return speed complicate bolt tightening and can lead to assembly errors. The tensioners in this series are designed to facilitate the tightening of foundation bolts while also considering safety. 【Key Features】 ■ PD Tensioner ● Safety: Incorporates safety features similar to those of blade tensioners. ● Slim Design: The double-decker type guarantees high loads with limited radial clearance. ● Laser-etched Scale: Allows for easy control of elongation. ● Gearbox: The most reliable gearbox, enabling the fastest oil return to avoid unnecessary time wastage. ● Optimized Design: Achieves high loads with a small diameter, suitable for applications in limited space. ■ BR Tensioner ● An ideal solution for applications with significant bolt protrusion or unique thread types. ● Maximum stroke of 10-20mm. ● High-pressure quick-connect coupler that does not require O-rings.

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Tape Tensioner (with certificate) PI-TS-050C

Tape Tensioner (with certificate) PI-TS-050C

When measuring the outer diameter with tape, it is necessary to pull, so using a tensioner makes it easy and accurate to apply tension.

When measuring the outer diameter with a pipe tape, it is necessary to pull it moderately so that the tension of the pipe tape reaches 2.25 kg; therefore, using a tensioner makes it easy and accurate to measure.

  • Inspection fixture
  • Tensioner

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Hydraulic Tensioner "Boltight"

Hydraulic Tensioner "Boltight"

General fastening components are available! Improve repetitive fastening tasks such as piping connections on a low budget.

"Voltite" is a tool that completes fastening by creating a pre-tightened state through controlled hydraulic tensioning of the bolt shaft, seating the nut, and then releasing the hydraulic pressure. By equalizing the compression applied to the joined components through hydraulic means, it is possible to fasten the flange joint surfaces with uniform force, preventing leaks. As a hydraulic tool using a tensioning method, the only remaining component after work is a standard nut, making it very effective for safely and reliably tightening multiple large-diameter bolts while keeping the cost of the components low. 【Features】 ■ Hydraulic tensioner that allows simultaneous and uniform tightening of multiple large-diameter bolts ■ Enables fastening without leaks by applying uniform pressure to the flange surfaces simultaneously ■ Uses standard fastening components, improving repeated fastening tasks such as piping connections on a low budget ■ Compact, lightweight, highly durable, with excellent workability and safety *For more details, please refer to the related links or feel free to contact us.

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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
  • Tensioner

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Airbag Bolt Tensioner "AB"

Airbag Bolt Tensioner "AB"

Tension tightening that is not affected by twisting or friction! Transmits axial force to the bolt more accurately and reliably.

The "AB" is a tool equipped with an air-back function that automatically retracts the piston as the pressure is released, by pre-filling air into a bolt tensioner capable of advanced axial force management. It has a strong body that can withstand harsh job sites and is easy to maintain. By combining various load cells with different plumb bars and bridges, it accommodates a wide range of sizes. 【Features】 - Tensioner with air return function - Pulls up the bolt with high-pressure hydraulic force while tightening the nut - Enables efficient work - Corrosion-resistant body - Compatible with M20 to M100 in six types *For more details, please refer to the PDF document or feel free to contact us.

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Hydraulic Bolt Tensioner for Power Generation Systems PGT/FTR/FTE Series

Hydraulic Bolt Tensioner for Power Generation Systems PGT/FTR/FTE Series

For tightening work of wind power, steam, and gas turbines, as well as for securing the foundations of wind power generation towers! You can choose according to your application.

The "PGT Series" is a hydraulic bolt tensioner designed for high-precision tightening operations of wind, steam, and gas turbines. The "FTR Series" hydraulic bolt tensioner is specially designed to apply tension to the foundation bolts of wind turbines. Additionally, the oval-shaped hydraulic bolt tensioner "FTE Series" is specifically designed for securing the foundations of wind power generation towers. We also offer hydraulic bolt tensioners for power generation systems and foundations. 【Features】 ■ PGT Series - Designed for high-precision tightening operations of wind, steam, and gas turbines ■ FTR Series - Specially designed to apply tension to the foundation bolts of wind turbines ■ FTE Series - Specially designed for securing the foundations of wind power generation towers - High-precision tightening operations result in less frequent maintenance *For more details, please refer to the PDF document or feel free to contact us.

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  • Hydraulic Equipment
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Case: Removal of studs from a stacker reclaimer with hydraulic tensioner.

Case: Removal of studs from a stacker reclaimer with hydraulic tensioner.

A case of developing a hydraulic tensioner to safely and timely remove studs!

Removing a 3-meter-long stud from the bucket wheel drive output of a Sandvik stacker reclaimer is a difficult and time-consuming task. In previous operations, it took over 10 hours to remove each stud, and a maximum force of 120 tons was required to push or pull a total of 16 studs. To safely and promptly remove the studs, a custom GT4 hydraulic tensioner was developed. The tensioner extracts each stud in about 30 minutes, significantly saving time for the maintenance team. [Case Overview] ■ Customer: Port Walarta Coal Services (Australia) ■ Product: Custom GT4 Hydraulic Tensioner, ZUTP1500E ■ Result: Significant time savings for the maintenance team *For more details, please refer to the PDF document or feel free to contact us.

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  • Other machine elements
  • Tensioner

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Wire tensioner for wire bonding

Wire tensioner for wire bonding

Achieving stable tension force using a unique ceramic nozzle.

Wire tension is a precision component mounted on bonding devices (bonders) that applies tension to various wires (Au, Ag, Cu) during bonding operations, enabling stable wire loop control. Furthermore, the air tension generates tension through vacuum air, ensuring a mechanism that does not damage the wire, allowing for high-quality bonding. Additionally, the ceramic parts used in air tension are finished to a smooth shape using ultra-precision processing technology developed through mass production of zirconia ferrules for optical communication.

  • Bonding Equipment
  • Tensioner

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Adjustment Fitting | CTB Tensioner

Adjustment Fitting | CTB Tensioner

Stepless adjustment is possible even at full load.

● Ideal for clean rooms due to the sealed adjustment unit and excellent cleanability ● High corrosion resistance due to the use of AISI 318LN duplex stainless steel ● Stepless adjustment according to scale even at full load ● Slim design with removable ball lock pin ● Twist prevention device ● Food-grade grease

  • Other machine tools
  • Tensioner

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