Thesis: Laser polishing of roller bearings for tribological surface improvement

Are you looking for an exciting challenge that will help shape the future? Then become part of our #OneTeam and write your thesis together with us and in cooperation with the Chair of Laser Technology LLT at RWTH Aachen University.

Topic: Investigation of laser polishing of 100Cr6 roller bearing steel to improve tribological properties.

Surface topography plays a key role in reducing friction, wear and energy losses in tribologically stressed components. In bearings in particular, it influences the running-in phase and thus longevity and energy efficiency. Conventional processes such as superfinishing achieve very smooth surfaces, but reach their limits when it comes to complex geometries, small components and sustainability aspects. Laser polishing offers a resource-saving alternative here, as local melting creates a functionally advantageous surface that potentially enables a more stable and low-friction running-in phase.

The aim of this work is to systematically investigate the influence of different grinding conditions and laser parameters on the resulting surface quality and to understand the relationships between process control and tribological functionality.

What you will do

• As part of your work, you will systematically investigate the influence of different laser polishing parameters on the resulting surface properties of 100Cr6 (e.g., roughness, wear ratio, oil retention volume, microstructure)

• Depending on your interests, you can focus on process engineering, materials engineering, or tribological issues
   

What you bring to the table

• You are studying mechanical engineering, physics, materials engineering or a comparable degree programme
• You enjoy experimental work
• You are characterised by a structured, independent and precise way of working
• Knowledge of surface analysis or laser material processing is helpful, but not a prerequisite
• Good German or English skills round off your profile
   

What you can expect

Team spirit: Creative, interdisciplinary environment with a motivated team, flat hierarchies and a 'you' culture
Workplace: Excellent machinery and equipment as well as first-class office facilities
Co-creation: Practice-oriented final thesis in an innovative applied research environment
Work-life balance: Benefit from flexible working hours on a basis of trust
Advantages: Opportunity to benefit from exciting corporate benefits
Travel: Good transport links, parking spaces directly in front of the institute, an e-charging station and a multi-storey car park

The position is limited until the completion of the thesis

We value and promote the diversity of our employees' skills and therefore welcome all applications - regardless of age, gender, nationality, ethnic and social origin, religion, ideology, disability, sexual orientation and identity. Severely disabled persons are given preference in the event of equal suitability. 

With its focus on developing key technologies that are vital for the future and enabling the commercial utilization of this work by business and industry, Fraunhofer plays a central role in the innovation process. As a pioneer and catalyst for groundbreaking developments and scientific excellence, Fraunhofer helps shape society now and in the future. 

Interested? Then we look forward to receiving your application and getting to know you 
Did you already know? We give you even more insights on our LinkedIn profile. 

Questions about this position will be answered by:
Sven Linden M.Sc.
+49 241/

Fraunhofer Institute for Laser Technology ILT 

Requisition Number: Application Deadline: 12/21/2025