Frequently Asked Questions About Our Nutrunners

Torque describes the force used to tighten a screw. It is crucial for achieving the correct preload: If the torque is set too low, the screw may come loose – if it is set too high, the screw or the thread may be damaged. The correct torque therefore ensures secure and durable screw connections.

“Tightening” refers to the process of tightening a screw to a specific torque.
Preload is the result of this process – that is, the preload force that is generated between the connected components and holds them securely together.

In the rotational tightening method, the screw is tightened using torque, which builds up the preload force through the rotational motion.

In the tension-tensioning method, on the other hand, the screw is first preloaded (tensioned) axially and then secured with only a small amount of torque. This method allows for a particularly precise and repeatable preload force.

A torque wrench tightens screws with a controlled and precisely adjustable torque – ideal when precision and repeatability are important.
An impact wrench, on the other hand, uses impact pulses and high torque, making it better suited for quickly loosening or tightening stuck screws, but not for precise torque-controlled fastening.

Controlled screw fastening means that a screw connection is tightened with a defined torque and under controlled conditions. The goal is to achieve a consistent preload force in order to ensure that the joint is secure and repeatable. Tools with a measuring or shut-off function are used to prevent over- or under-tightening.

Plarad covers a wide range of torque ranges – up to 150,000 Nm for custom solutions.

A flange connection is securely fastened when clean components are used, the bolts are lightly greased, and they are tightened in a crisscross pattern and in stages using the correct torque. For precise results, we recommend Plarad torque wrenches or hydraulic wrenches.

Hydraulic and electric torque tools are particularly well-suited for wind turbines, supplemented by modern digital controls and, where appropriate, automated systems to ensure safety, accuracy, and efficiency in a wide range of bolting tasks.

For screw connections in hard-to-reach areas, we recommend the following tool Plarad FSX hydraulic torque wrench. It features a flat design, allowing it to be used even in tight spaces.

For mobile use on construction sites, Plarad offers the following products in particular: battery-powered and electric torque wrenches are particularly suitable for mobile use on construction sites, as they can be used without complex infrastructure.

Yes, Plarad offers ATEX-certified tools for use in potentially explosive atmospheres. These include hydraulic power packs, hydraulic wrenches, and pneumatic nutrunners that have been specifically designed for safe operation in ATEX zones.

Select the right Plarad tool based on your required torque, application (e.g., installation, service, large flange), and whether documentation or special requirements are needed. Our cordless, electric, hydraulic, or tension cylinder systems cover all typical fastening applications.

Cordless Torque Wrenches are battery-powered, flexible, and portable – ideal for assembly and service work.
Electric torque wrenches are powered by an electrical outlet, offer high precision and documentation features – suitable for industrial assembly.
Hydraulic torque wrenches operate using hydraulic pressure, deliver very high torque, and are ideal for large-scale bolted joints.

A manual torque multiplier is used when high torques are required without electricity or compressed air – for example, for heavy-duty, large-scale bolting applications in industry – and a simple, reliable solution is desired.

The DA2 is a portable cordless torque wrench with adjustable torque, rotation angle, and optional documentation – ideal for flexible applications.
A Hydraulic system operates using pressure and a power pack, delivers higher torque, and is used for large-scale bolting applications.

“Made in Germany” At Plarad, this means that development, design, manufacturing, and quality assurance are carried out entirely in Germany. As a result, Plarad stands for the highest precision, durability, and reliability in screw and clamping technology.

The partnership with C.& E. Fein combines Plarad’s expertise in bolting technology with Fein’s expertise in drive systems. This results in particularly powerful, precise, and durable tools for industrial applications.

Plarad stands out thanks to over 60 years of experience, the highest quality “Made in Germany,” and an exceptionally wide range of screw-on and pre-tensioning systems. In addition to standard solutions, Plarad offers custom-tailored tools, innovative documentation features, and comprehensive service – all from a single source.

Ergonomically designed tools with two-hand operation and automatic shut-off (e.g., for the DA2 Safety Series), as well as a certified training and documentation system, workplace safety during fastening operations is significantly improved.

Plarad’s tools are ergonomically optimized: They are lightweight, low-vibration, and compact, which significantly reduces physical strain. Rotating handles, well-balanced housings, and cordless models allow for comfortable and safe work – even in tight or hard-to-reach areas.

Our fastening tools achieve a repeatability of less than 4% and, thanks to state-of-the-art control and measurement mechanisms, ensure reliable fastened joints.

You can easily order PLARAD tools by submitting a request through our website , where you’ll find comprehensive information on products, specifications, and services. Alternatively, a global network of national and international partners through which our high-quality tools are also available.

Yes, we offer on-site demonstrations and consultations. Our application experts will come to your location, demonstrate our tools under real-world conditions, and provide you with personalized advice on the best solution for your fastening tasks.

Yes, we offer customized training courses for users and service teams. Our Plarad Academy provides practical knowledge on safe and efficient fastening – either at our facility or directly at your location.

To receive a personalized quote, simply send us your request via the contact form on our website – please include details about your application, quantity, and technical requirements. We’ll then prepare a customized quote for you. If you’d like a personalized consultation, please feel free to contact us via the contact form or find the right contact person for your region on our “Contact”page.

You can find the right contact person directly on our website in the section Contactsection. All sales regions in Germany, as well as our international partners and branches worldwide, are clearly listed there – so you can quickly reach the right contact person in your region.

When working with torque wrenches, pay attention to safety and proper handling. Always wear appropriate protective equipment, inspect the tool for visible damage before each use, and ensure that the set torque is correct. Hold the wrench steadily with both hands, avoid loose clothing in the work area, and disconnect the tool from the power or air supply before performing maintenance or adjustment work.

Plarad tools ensure a high level of workplace safety thanks to their ergonomic design, low-vibration construction, and innovative features such as two-hand operation and torque monitoring. This significantly reduces the risk of operating errors and injuries.

Kickback and injuries caused by the reaction torque can be prevented by properly supporting the tool and guiding it securely with both hands. Plarad tools feature special reaction arms and safety features that dissipate the torque in a controlled manner, thereby ensuring safe operation.

Plarad tools feature various safety functions, such as two-hand operation (e.g., when using the DA2 safety) and soft start to prevent unintended movements. In addition, features such as a 360° swivel joint ensure kickback-free operation, thereby providing greater safety and ergonomics during installation.

Plarad supports ergonomic work with heavy-duty power tools through compact, low-vibration models and practical accessories such as trolleys for back-friendly transport.

The CE marking on our Plarad tools confirms that they comply with all applicable EU directives. It stands for verified safety, health protection, and environmental protection, and indicates that our products can be operated safely and used freely within the EU.

Plarad offers a wide selection of reaction arms for various tool types and applications – from cordless and electric nutrunners to hydraulic torque wrenches. Depending on the available space and the fastening task, standard, special, or custom reaction arms are available to ensure safe and ergonomic force support.

Yes – Plarad offers a variety of adapters and accessories to help you handle different screwing applications with flexibility – such as varying screw sizes, thread preloads, or special installation spaces.

Yes, we offer custom-made products. Plarad customizes tools, adapters, and complete bolting systems to meet our customers’ specific requirements and applications.