Experience safer, more efficient bolt tightening operations in critical applications with Superbolt tensioners featuring built-in preload monitoring systems
As the global market leader of bolting solutions, Nord-Lock Group is dedicated to improving our already state-of-the-art products – including the integration of smart technologies. The Superbolt Load-Sensing Tensioner (LST) measures the preload of a multi-jackbolt tensioner with an accuracy that is better than ±5%! The LST features a wealth of benefits without the need for any modification of the bolted joint.
How it works
Under the effect of a bolt axial load, the Superbolt MJT nut body undergoes a hoop stress thereby causing radial expansion (flexing in at top and out at bottom).
Measuring the expansion with respect to the nut body circumference, however, enables a wider and more accurate response. By controlling the relationship between circumferential expansion and the axial preload, it becomes possible to monitor preload from this unique feature.
Product benefits
Remote preload monitoring and a live reading of data
Facilitates more uptime during service
Precise and repeatable preload reading
Eliminates the need for modifications of the bolt
Seamless to retrofit/upgrade — simply replace original nut with the LST
Robust and reliable, IP67-classed
Accurate preload verification without adjustment of clamped parts
No alteration needed of the assembly (including stud or joint design or geometry)
Removes risk of injuries for operators in hazardous areas
Eliminates high costs on labor, additional measuring devices, and periodic verification by maintenance
Experience safer, more efficient bolt tightening operations in critical applications with Superbolt tensioners featuring built-in preload monitoring systems
As the global market leader of bolting solutions, Nord-Lock Group is dedicated to improving our already state-of-the-art products – including the integration of smart technologies. The Superbolt Load-Sensing Tensioner (LST) measures the preload of a multi-jackbolt tensioner with an accuracy that is better than ±5%! The LST features a wealth of benefits without the need for any modification of the bolted joint.
How it works
Under the effect of a bolt axial load, the Superbolt MJT nut body undergoes a hoop stress thereby causing radial expansion (flexing in at top and out at bottom).
Measuring the expansion with respect to the nut body circumference, however, enables a wider and more accurate response. By controlling the relationship between circumferential expansion and the axial preload, it becomes possible to monitor preload from this unique feature.
Product benefits
- Remote preload monitoring and a live reading of data
- Facilitates more uptime during service
- Precise and repeatable preload reading
- Eliminates the need for modifications of the bolt
- Seamless to retrofit/upgrade — simply replace original nut with the LST
- Robust and reliable, IP67-classed
- Accurate preload verification without adjustment of clamped parts
- No alteration needed of the assembly (including stud or joint design or geometry)
- Removes risk of injuries for operators in hazardous areas
- Eliminates high costs on labor, additional measuring devices, and periodic verification by maintenance
