Wind energy
Bolting technology for wind power
Precision and efficiency for your wind turbines
ITH Bolting Technology offers industrial bolting tools and innovative pretensioning technology for the efficient assembling and maintenance of wind turbines – both onshore and offshore. Our solutions are optimally tailored to the requirements of the wind energy sector and guarantee maximum safety, precision and cost-effectiveness for bolt connections from M16 (5/8″). As an independent system supplier, we provide you with objective advice and develop customized solutions for your individual bolting application. Benefit from our many years of experience, comprehensive qualifications and first-class service. Contact us for technical advice on your bolted joints.
An excerpt of our applications
Bolting technology for the highest demands
From foundations to tower segments and rotor blades – every component of a wind turbine places specific demands on bolting technology. With our innovative tools and customized solutions, we ensure precise, safe and efficient bolt connections in all areas. Discover an excerpt of our applications and find out how we can support your projects.
Foundations
Precise bolted connections on foundations are essential to ensure the stability and safety of wind turbines. Our bolting tools enable reliable assembling and maintenance of bolted connections – even with large diameters and high preload.
Tower
The bolting of tower segments requires the highest precision in order to withstand wind loads in the long term. ITH offers innovative solutions that are specially tailored to the requirements of tower assemblies and ensure efficient assembling.
Rotor
Rotor blades and rotor bearings are central to the performance of a wind turbine. Our bolting tools ensure secure connections that can withstand the extreme dynamic loads caused by rotation and wind pressure.
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Your reliable experts for bolting technology
ITH Bolting Technology has been a reliable partner for the wind energy sector and many other industries for decades. With innovative solutions, a global presence and first-class service, we set standards in quality and reliability.
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Frequently asked questions
How does ITH Bolting Technology ensure the safety of bolt connections in the wind energy sector?
ITH Bolting Technology embeds innovative Bolt Tensioning Cylinders and hydraulic torque wrenches that enable precise, documented and repeatable pre-tensioning of critical bolted joints. By providing objective, technical advice and selecting the optimum bolting method, the best technical and most economical solution is found for every application. ITH also offers qualified industrial fitters with special wind energy and offshore qualifications as well as on-site technical inspection to ensure maximum safety.
What advantages does the Bolt Tensioning Cylinder/tensioning method offer when assembling tower segments?
The pulling process with Bolt Tensioning Cylinders enables friction- and torsion-free pre-loading, which means that the assembly pre-tensioning force is applied with exterior precision and low dispersion. This increases the safety and reliability of the connection, reduces wear and minimizes the risk of assembly errors. The assembly time can be reduced by up to 50 % compared to conventional methods. Bolt Tensioning Cylinders are also lighter and more ergonomic than many torque wrenches, which improves work safety.
How often should bolt connections in wind turbines be serviced?
The maintenance intervals depend on the specifications of the system manufacturer and the fasteners used. With precise pre-tensioned and maintenance-free bolted connections, as realized with modern Bolt Tensioning Cylinders and high-quality fasteners, the need for regular inspections can be significantly reduced. After initial installation and one-off retightening, no further inspections are often necessary, which saves maintenance costs – especially in offshore installations. Nevertheless, maintenance schedules and inspection intervals should always be agreed with the manufacturer.
What services does ITH offer for wind turbines?
ITH offers a comprehensive range of services: from technical advice and on-site inspection to assembling and maintenance by qualified industrial fitters and the provision and maintenance of special tools for all bolting applications. In addition, training, technical documentation and objective, process-safe advice are offered to ensure the optimum solution for every application.
What standards and norms does ITH Bolting Technology meet in the wind energy industry?
ITH Bolting Technology is guided by the international standards of the wind energy industry, in particular IEC 61400, which defines the technical requirements for the design, assembling and operation of wind turbines. Compliance with these standards is a prerequisite for the approval and safe operation of wind turbines. In addition, national regulations and industry-specific guidelines, such as the DIBt guideline for stability certificates, are taken into account.