Through the adjustment and control of process parameters such as quenching, cleaning, tempering temperature and time, the content of retained austenite in the bearing ring is reduced, the strength and toughness and wear resistance of the bearing ring parts are improved, and the expansion coefficient is controlled. Within the required range, it can improve the noise performance of the bearing after multiple installations, and also improve the reliability and service life of the bearing;

Using the structural characteristics of the mesh belt furnace, through the adjustment and control of the quenching temperature and oil temperature, the thermal stress of the bearing ring parts during quenching can be reduced, which can greatly reduce the deformation of the thin-walled and large-size bearing ring parts;

Preparatory heat treatment methods such as normalizing and high temperature tempering can also be used to make up for the gap with foreign bearing steel materials, which has a certain effect on improving the reliability and life of the bearing, but it will increase some production costs. The company uses it when conditions permit. It can also be used as an emergency method;

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In a good position

One goal was to expand the company’s service portfolio in order to overcome specific obstacles still hindering the widespread use of condition monitoring. Another was to minimize the outlay and costs for the user and maximize the quality of the information provided. To fulfill these solution prerequisites, Schaeffler established an Industrial IoT Solution Center in the Finnish town of Jyväskylä at the beginning of 2019. The company recruited numerous new employees from the local area and entered negotiations with potential development partners. The result was a network of German and Finnish Schaeffler teams with a wealth of in-depth condition monitoring, application, and analytics expertise. The teams then collaborated with Finnish IoT technology partners to create a state-of-the-art ecosystem for the task that they were to share. In just a few weeks, they were able to present a functioning initial prototype – a rapid success that inspired a high level of trust and confidence in all those involved in the project.

Completely focused on the objective

Managing the network is both a major challenge and at the same time a crucial success factor in joint development projects involving multiple companies. It includes coordination meetings held at the right time and with the relevant participants, rapid and binding decisions about subsequent procedures, and flexibility in the event of unexpected intermediate results. Schaeffler’s focus during the agile development process for OPTIME was clearly on added value for the customer. Teppo Hemiä, CEO of Wirepas, a leading IoT connectivity company and a close partner to Schaeffler, explains: “Schaeffler set the bar high and made exacting demands in terms of wireless data transfer from the very beginning: low energy consumption, scalability, and reliability in industrial application. Thanks to its collaboration with Wirepas and the other Finnish partners, who also have previous experience of working with each other, Schaeffler was able to focus on its core areas of expertise and set itself apart from the competition.”

The partners’ expertise

“The partner network combines leading technologies and outstanding expertise,” says Richard Haagensen, Partner Ecosystem Manager and OPTIME Program Manager. Wirepas is a specialist in software development for connectivity using a unique wireless mesh technology in the Industrial Internet of Things (IIoT). Wapice contributes its prize-winning industrial software to the Schaeffler IoT platform and develops Schaeffler-specific OPTIME applications on top for the platform. Treon is a product development company specialized in wireless hardware products for IoT-solutions. Treon’s Gateway platform provides the connectivity for data transfers between the sensors in the mesh network and the IoT platform. Schaeffler’s wireless battery-operated sensors for OPTIME are mass-manufactured by Salcomp, a global developer and manufacturer of power supplies and IoT devices.

Business Finland supported Schaeffler in setting up the network. The public Finnish organization offers innovation funding and internationalization services, as well as promotes travel and investments in Finland. From their perspective, the collaboration is a major benefit for Finland’s IoT sector: “The Finnish IoT ecosystem has demonstrated its capabilities and displayed high-quality collaboration throughout this development – and that is an excellent reference. The Finnish economy benefits from this on multiple different levels. Schaeffler has created jobs as a result of this project, not just in the company itself but for its Finnish partners as well. What is more, it has also opened up new export opportunities for the partner companies,” affirms Janne Kari, Head of Industry, ICT and Digitalization, Business Finland.

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