Hydraulic Bolt Tensioner

HomeHydraulic Bolt Tensioner

TorcStark sells various types of bolt tensioners. Whether it is used for various types of bolts or for special conditions such as bridge or wind power, TorcStark has suitable tensioners. Of course, if you need hydraulic nuts you can also find them here.

Hydraulic Bolt Tensioner

Slim Type Topside Tensioner

HLD series bolt tensioners are compact in design, small in size and light in weight. It can work normally under the working pressure of 150MPa, and the connecting rod replacement is also very convenient.

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Hydraulic Bolt Tensioner

Single Stage Topside Tensioner

The maximum working pressure of the DLD series bolt tensioner is 150MPa. It has an overpressure warning line to ensure construction safety, and has the function of replacing the pull rod and mechanical return.

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Single Stage Bolt Tensioner

TSD series bolt tensioners can be adapted to a variety of bolts by changing the rod and sleeve. Its automatic return feature facilitates removal and operation, and an overtravel warning line ensures operator’s safety.

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Multi Stage Bolt Tensioner For Wind Power

MSD series bolt tensioners are tensioning devices specially used in the wind power industry. It has a wide range of models and is suitable for the fastening and removal of bolts in multiple positions of various brands of wind turbines.

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MSK Series Multi Stage Bolt Tensioner

The MSK series tensioner is primarily used for fastening Grade 10.9 bolts and is available with customization options such as nickel plating, a counter, a measuring rod, and a 360-degree rotating quick connector.

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ZLD Series Bolt Tensioner For Bridge

ZLD series bolt tensioner is a special tensioner for bridges, which is easy to operate, and has a quick return mechanism and a red overtravel warning line. The tensioner surface is specially treated to prevent metal oxidation.

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SJD Series Bolt Tensioner For Bridge Lock Clamping

SJD series hydraulic bolt tensioners can pre-tighten or disassemble bolts of different specifications, thereby avoiding frequent replacement of tensioners.

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ESD Series-Single Stage Bolt Tensioner

ESD series single-stage bolt tensioners are specially designed for the disassembly and assembly of high-strength 10.9-grade bolts, with a 90% elongation limit of 0.2.

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CY Series Super Nut

CY Super Nuts are ideal for all applications in high-strength bolt tightening, machine tightening and oversized hex nuts. The working pressure is 410Mpa-890Mpa, and the working temperature is 60℃-200℃.

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DN/HN Series Hydraulic Nut

DN/HN hydraulic nuts tighten bolts by pure tension. No torque is applied during the bolt tightening process to avoid affecting the precise tightening of the bolts. It is equipped with a travel indicator and improves work efficiency.

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TorcStark has always been at the forefront of hydraulic bolt tensioning. Our tensioning tools provide a fast, accurate and safe solution for tightening and loosening multiple bolts at the same time using a high-pressure tensioning system. If your project has strict requirements for bolt pre-tightening force, ordinary tensioning tools will not be able to achieve your goal, then bolt tightening machine is the best choice. TorcStark’s standard hydraulic bolt tensioners are designed for general use. Each tool includes a hydraulic cylinder, bridge, puller and socket. The interchangeable adapter kit is suitable for common hydraulic cylinders and can tighten bolts of various sizes. Whether you are tightening flanges in a factory or installing blades on a wind turbine, TorcStark has the tools for the job. TorcStark offers a wide range of Bolt tensioning machines and tensioner pumps to suit various applications and environments. Our tensioner can be designed into any style that meets the needs of customers.

Bolt tensioning is now the preferred method of tightening bolts and studs in all critical applications. Bolt tensioners are designed for a variety of applications, including pipe flanges, heat exchangers, pressure vessels, compressor covers, boiler feed pumps, windmills, etc. In the bolt tensioning, the bolt tensioner uses pure tension to directly stretch the bolt, without torsion shear and lateral force, and no frictional damage to the contact surface of the connection. It is the best method to accurately control the bolt pre-tightening force. Through the bolt hydraulic tensioner, you can pre-tighten or disassemble multiple bolts at the same time, and stretch the bolts before tightening with zero friction of the nut, ensuring extremely high accuracy, speed and uniformity. It is one of the best bolt tensioning tools. Compared with the traditional tightening method, using a bolt tensioner has significant advantages:
Fastener without torsional load
Direct loading will not damage the components.
The operation is simple and quick.
Very high accuracy and repeatability.
Automation is feasible and can be used for critical applications.

Therefore, the hydraulic bolt stretcher is a simple and efficient bolt tensioning equipment. TorcStark is committed to providing customers with the best quality and widest variety of hydraulic stud tensioners, such as bolt tensioning devices for wind power, and subsea tensioners for tightening subsea bolts. Our hydraulic tensioners have European CE and ISO9001 quality certification. They can operate safely and stably in various harsh environments, making bolt tightening simple and easy. The trust and purchase of customers is the best proof of the quality of TorcStark bolt tensioning cylinder.

TorcStark has many years of research and manufacturing experience for bolt tensioners. As one of the world’s best bolt tensioner manufacturer and supplier, TorcStark hopes to provide you with the most suitable bolt tensioner. Therefore, if you want to buy a 1500 bar pneumatic bolt tensioning unit or want to know the price of a 1500 bar pneumatic bolt tensioning unit, please contact us by email, phone, or online support. TorcStark will provide you with product brochures, bolt tensioner price lists and the best bolting solutions!


How many types do you have for the bolt tensioning machines?

Basically there are two types, single stage bolt tensioner (also called topside bolt tensioner) and multi stage bolt tensioner. But customized models are also available.

What are the main differences between single stage and multi stage bolt tensioning tools?

In most cases single stage bolt tightener machine is required for example oil&gas, petrochemical industry etc. For multi stage tensioner it’s specially used for wind turbine installation and maintenance.

What information should I provide if I need a hydraulic bolt tensioner?

If any customer wants a hydraulic tensioning of bolts, you’re kindly requested to provide necessary information as mentioned below:

  1. What is the maximum tensile force you need?
  2. What are your bolt sizes? M39 M42 or else?
  3. What is the strength grade of the bolt? Usually it’s 10.9 or 8.8. If you don’t know the answer for Question 1, then this one is very necessary to answer.
  4. Do you need topside or multi stage bolt tightening tools?
Which model should I select to replace the old model we are currently using?

Please show us the model number and picture of your old model, then we will recommend the similar.

How can I choose the right model in case the working condition is very special on my job site?

In this case it is suggested that you just need drop us an email (ID: TorcStark@gmail.com) and our sales representative will guide you to fill in a questionnaire, with this form we will recommend the suitable model for you.

Please let me know the Type of bolt tensioner required for Body flange tightening means multiple or single type

Usually single type.

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