Quality knows no compromise.

Your trust in our products is what drives us to get a little better every single day. This also includes identifying mistakes at an early stage and learning from them. Our specially developed advance warning system which is implemented in all of our processes and the exceptional quality awareness of our employees are a further guarantee for perfect products.

Control in every step

Our products have to stand the test of the most extreme operations conditions every day. Consequently, excellent quality and long lifespan are not optional for us, but are a necessity. Our quality assurance system is therefore certified according to DIN EN ISO 9001, DIN EN ISO 14001 and DIN EN ISO 3834-2, amongst others. From inspection of all outsourced parts and materials to production inspections during the production process and the planned final inspection of our products, we monitor each step precisely. With the latest inspection procedures and devices, we perform 150,000 documented product and process audits each year. You can be sure that you always get the best possible product from us.

Computer-controlled testing

For the dynamic inspection of wheels in accordance with DIN EN 12524-12533, we have developed a special drum test rig. With speeds of up to 30 km/h and a load of up to 70 kN, we can perform endurance tests, load increase tests and driving tests including simulated steering movements and impact loads. For optimal testing of how our products respond to a wide range of challenges, we can simulate a variety of situations in test mode. The tests are of course controlled, monitored and analysed by computer.


You will find further information and technical specification about our drum test rig here