RotaBolt tension control technology - maximum safety & reliability

RotaBolt tension control technology ensures the integrity, reliability and safety of bolted connections. 100% tension monitoring is critical to ensure optimum performance - both during installation and throughout the life of the joint.

✔ Precise target tension control for maximum safety
✔ Reliable fastening solutions for critical applications
✔ Global market leader in the offshore, refineries, chemical process engineering, energy, construction, defence & transport sectors 

Rely on RotaBolt - for bolted joints that deliver what they promise! 

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RotaBolt® tension control - precision through strain measurement

The RotaBolt technology is based on the standard indicator rod bolt in accordance with ASME PCC-1-2000 and sets new standards in bolt tension control. By measuring the length directly to assess the applied load, the RotaBolt version enables much more accurate tension measurement based on elongation. This ensures consistent application and long-term load stability. Each bolt is individually calibrated by a 100% load test and equipped with a special indicator for strain measurement, the values of which are certified.   

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RotaBolt® No. 1

RotaBolt® No. 1 technology was developed in the 1980s and remains unique in bolt tension control to this day. It utilises a standard bolt with indicator and RotaCap, which locks when the target tension is reached. As soon as a loss of tension occurs, the cap loosens immediately and signals the need for readjustment. Each screw is subjected to a 100% load test in advance and guarantees a tension measurement accuracy of ±5%. This enables reliable control and contributes to the long-term safety and stability of the connection.  

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RotaBolt® No. 2

RotaBolt® No. 2 technology offers even more comprehensive tension control during installation, tightening and operational testing. Thanks to a dual load indicator, each bolt has two tension settings in a single sensor. The outer cap shows a high tension setting, while the inner cap is designed for low tension. This allows an operational tension range to be defined that can be used for both overload control and maintenance inspections.  

James Walker RotaBolt® Animation

James Walker RotaBolt®