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Hytorc and James Walker Rotabolt, two specialists in tightening control and bolted-joint technology, have launched a fully integrated tension control system for assuring bolted joints.

The Integrity system installs fasteners at the correct design tension without having to remove the tool from the bolt during the process.

Together, the tool and fastener ensure that the correct tension is achieved every time and is then fully maintained throughout the life of the bolted joint.

According to the companies, failures of critical bolted joints can be disastrous and more than 90 per cent of all failures can be attributed to insufficient bolt tension at installation.

Hytorc and James Walker Rotabolt developed Integrity as an integrated system with the science of tension control at its heart.

It features a tightening tool to incorporate the technology used during the production of Rotabolt tension control fasteners within its specially developed checking device.

The tool automatically senses when the special cap has locked on top of the fastener and then cuts off the hydraulic tightening power.

The Hytorc tool with its accuracy and capability, coupled with Rotabolt’s tension control and 100 per cent load test calibration, has resulted in an advanced technology-led system.

It delivers the speed and flexibility of fully integrated hydraulic torque tightening, combined with tension control accuracy to +/-5 per cent.

As a complete system, it installs to the correct design tension and then monitors and maintains that tension throughout the life of the bolted joint through the control technology incorporated in each Rotabolt.

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