DIN 580 eyebolts are among the most widely used lifting points in engineering and metal-processing industries. They are extensively used to lift motors, compressors and industrial equipment. In this article, we discuss why this common eyebolt may not always be the safest to use when the weight of the component to be lifted increases substantially.

The eye in a standard eyebolt is directly connected to the thread and cannot align itself with the direction of pull. This presents a problem with laterally mounted lashing points or in multi-leg applications. If the eye is loaded outside its plane during lifting, the DIN 580 eyebolt will rotate in the direction of the force. This can lead to either loosening or overtightening, increasing the risk of the bolt bending or breaking. Such failures can result in the load falling, potentially damaging the crane, jib, and chain slings and endangering operators. Therefore, in such situations, it is crucial to consider alternatives to traditional eyebolts.

Overcoming the Weak Point in Lifting and Lashing

Most countries lack awareness regarding the importance of lifting, lashing points and load securing systems. While manufacturers and operators rightly prioritise the performance and reliability of crane systems and chain slings, lifting points are often overlooked. High-quality lifting points with defined Working Load Limits (WLL) and certifications are often the exception rather than the rule. Instead, users frequently assume that standardised eyebolts are reliable for lifting high-quality machines and components.

Minimising Safety Risks with RUD Lifting Points

RUD has been a pioneer in developing and manufacturing lifting points that rotate in the direction of the load. With RUD eyebolts, the 360-degree adjustable eye automatically aligns itself with the direction of force as soon as it is loaded during lifting. This significantly mitigates most risk factors associated with eyebolt use in lifting.

However, safety is not limited solely to the eye's rotation. Although most eyebolts operate on the same principle, they are not all equal. The difference lies in manufacturing quality and operation. RUD lifting points are produced to the highest manufacturing standards and can vary in operation; some require tools, while others can be attached with a pre-assembled wrench.

The RUD VRS-F-Starpoint: Enhanced Safety and Convenience

The RUD VRS-F-Starpoint is designed for easy attachment, making it simple and safe for any operation. Its star profile wrench, which serves as an Allen key replacement, is permanently attached to the eye. This provides convenience even during repeated assembly and disassembly. If the bolt remains permanently on the VRS-F, a cranked socket wrench can be used for a single tightening. 

The VRS series is available with WLL from 0.1 to 20 tonnes and in thread sizes M6 to M64. It offers significantly higher load capacities than other bolts of the same thread size. This is partly due to its increased load capacity, which allows safe lifting of up to several times the required WLL during vertical lifting operations (0 to 7 degrees). The VRS-F can even be mounted on small contact surfaces or in locations that are challenging due to other components, like hydraulic hoses and other attachments.

Tested and Certified Safety

In addition to robustness and flexibility, the VRS-F Starpoint is extremely durable. It is tested for 20,000 load cycles at 1.5 times overload, is 100 percent crack-tested, and offers four-fold safety against breakage. In Europe, the DGUV (German Legal Accident Insurance) seal confirms the component complies with international safety requirements.

Digitally Ready for the Future

RUD constantly innovates to future-proof its products. The VRS-F Starpoint comes with an RFID transponder as standard. Every RUD product with RFID can be read through the "BUDDYtron" smartphone app or NFC. Users can instantly identify components and access product-specific information such as user instructions and technical data sheets. This simplifies and enables faster planning and execution of lifting operations. Through the lifting accessories and lashing points check function, users can determine whether a component is suitable for any specific lifting operation. Additionally, they can click a picture and email images directly to RUD to get answers to general questions.

From material selection and design to integration of digital solutions, RUD VRS-F Starpoint eyebolts offer a high-quality and flexible solution for greater safety and efficiency in everyday lifting operations.

For more detailed information on RUD lifting and lashing points, visit our Lifting & Lashing, ICE-120 Chains and the VRS-F Starpoint pages.

Original Article: Kuhn Fachmedien Mechanical Engineering & Metalworking Edition. Translated from German and rewritten in English for Australia.

Copyright to RUD: This information is accurate at the time of publication, and RUD Australia takes no responsibility for any errors, inadvertent or otherwise.