Sensorintegration
Vollständig integrierte Sensorik im Gewindegrund
Kontinuierliche Messung im Betrieb
Messung von Vorspannkraft und dynamischen Lasten in Echtzeit
Mechanik im Fokus
Keine Schwächung des Befestigers – volle mechanische Integrität
Alle Kräfte im Blick
Varianten für Axialkraft, Biegung und Torsion
The S.Bolt XP was specifically developed for applications where the mechanical integrity of bolted connections is of paramount importance – which is also the foundation of our VDI 2230 compliant design calculations. The S.Bolt XP enables bolt monitoring for critical connections. This allows preload and dynamic bolt loads to be measured not only during installation but also during continuous operation.
A key feature is the sensor system, which is fully integrated into the thread root. This design enables the detection of axial forces (S.Bolt XA), bending (S.Bolt XB), and torsion (S.Bolt XT) without compromising the bolt's structural strength. Unlike conventional solutions where bores or external cable channels can alter the mechanical properties, the S.Bolt XP retains its full function as a fastener.
The combination of standard-compliant design and innovative sensor integration makes the S.Bolt XP ideal for safety-critical applications in industry, energy and infrastructure.
Operating principle
The mechanical integrity of the S.Bolt XP is achieved by means of sensor technology that is fully integrated into the thread base. Unlike conventional solutions, which require drill holes or external cable channels and thus reduce cross-sectional strength, the bolt body remains unchanged in the S.Bolt XP.
The sensors are designed as strain gauges in a Wheatstone full bridge and positioned so that they detect axial strain and, optionally, bending and torsion without affecting the load-bearing capacity. This clearly shows how the measured preload translates into actual flange clamping force."
Integration with Control Systems and Fieldbus
The measurement signals of the S.Bolt XP can be integrated into an existing measurement or automation environment. Depending on the signal conditioner and system configuration, transmission via industrial interfaces such as IO-Link, Modbus TCP, or PROFINET is possible. This allows measurement data from bolt monitoring to be transferred to higher-level control and monitoring systems.
Versions
S.Bolt XA
S.Bolt AB
S.Bolt AT
Measurement direction
Axial (bending compensated)
Axial (bending compensated)
Bending on 2 axes
Axial (bending compensated)
Torsion
Sensor type
1x Wheatstone full bridge
3x Wheatstone full bridge
2x Wheatstone full bridge
Electrical connection
M12-A socket
4 pole
M12-A socket
8 pole
M12-A socket
8 pole
Temperature measurement
Optional
No
No
Robust Version
S.Bolt XAR
with reduced cross-section
S.Bolt ABR
with reduced cross-section
S.Bolt ATR
with reduced cross-section
Minimum diameter
M24 standard thread
M36 standard thread
Not available for fine thread
M36 standard thread
Not available for fine thread
Typical applications
Wind power
Steel construction
Special machine construction
General applications for measuring preload and dynamic loads.
Sheet bolts
Tower flanges
Crane runways
Bridges
Tunnel boring machines
Presses
Foundation bolts
Critical Bolted Joints under Bending Loads
Blade Bolts
Tower Flanges
Long screws and bolts that are installed using rotating methods.
Blade bolts
Foundation bolts
Foundation bolts
FAQ
What is your application?
Contact us
Sensorise GmbH
Fahrenheitstraße 1
28359 Bremen
Germany
+49 (0)421 220 834 0
