FAQ

A: 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.

A: 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.

A: 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?

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

A: 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.

Contact us

    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.

    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!

    hydraulic bolt tensioner video