Precision matters: core sensing relies on HBK’s expertise in smart sensory drive shafts

The drive shaft as a key component of the drive units of plants, machines and commercial vehicles is subjected to high loads, especially when used in harsh environments.

Companies perform maintenance work at regular intervals to ensure full operability. The current state of the devices that require maintenance and, thus, their actual need for maintenance are often unknown. As a rule, only in the event of a failure is its cause investigated and only then is the required spare part ordered. This results in unnecessary delays and expensive production losses.

To counter this, the market leader, “Elbe Group”, in cooperation with “core sensing”, has developed an innovative product family of sensory drive shafts. The smart components continuously provide data about their condition. Potential problems can be detected and resolved in time. Cost-intensive downtime is significantly reduced. What many plant and vehicle manufacturers have wished for finally becomes reality.

The intelligence of the next-generation drive shaft is located inside a standard drive shaft. To achieve this, “core sensing” integrated their smart sensors and measuring electronics in the cavity already present in the component. The strain gauges installed in the drive shaft were individually provided by Hottinger Brüel & Kjaer (HBK) and optimally adapted to the application’s environmental conditions in terms of geometric dimensions, material and temperature tolerance.

The structurally integrated sensor provides highly precise real-time information about the acting torque directly from the drive shaft. This information enables reliable conclusions to be drawn about the condition of the shaft and surrounding components. Users can, therefore, rely on precise measurement results.

HBK customised and provided the torsional strain gauges installed in the drive shaft for measuring the torque and the T-rosette for measuring the axial force. Therefore, users can rely on precise torque and axial-force data, which are supplemented with a variety of additional measured variables due to “core sensing’s” smart solutions for the entire measurement chain.

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