Measuring technology for the highest demands on rolling bearing quality – BETC GmbH


In many applications, machines and systems, rolling bearings are among the components relevant to safety. Accordingly, their reliability and faultless operation are imperative. In this context, component tolerances are an important criterion and quality feature. This mechanical standard is defined by the relevant DIN/ISO norms.

However, measurement tasks required for rolling bearings and their components can be extensive and complex. Depending on requirements, different parameters must be measured under various bearing conditions on components or on the mounted rolling bearing. Typical tasks include dimensional and form tests (e.g., connection dimensions, contours, roundness and waviness), the measurement of surface characteristics (e.g., roughness), dynamic measurement tasks such as the checking of running deviations (e.g., radial and axial wall thickness variation, radial runout with different references), as well as special tests such as the measurement of radial internal clearance and noise testing. Performing measurements properly and in accordance with the standards guarantees reliable measurement results.

“BETC delivers fast, high-precision and standard-compliant measurements when customers experience bottlenecks due to a lack of equipment and know-how”

Measurement technology is an area where customers tend to experience bottlenecks. “Lack of equipment and know-how is often the problem. But capacity problems in the laboratories due to high utilization also lead to delays in the processes,” notes Dominik Helfrich, Managing Director of BETC Bearing Engineering and Testing Center GmbH. The company’s Rolling Bearing Metrology service area is attuned to deal with precisely such situations, both for order peaks and as a permanent service partner. BETC GmbH provides fast, high-precision, standard-compliant measurements as a basis for reliable product and process development, initial sampling and as a basis for quality monitoring and qualification of rolling bearings. Using the latest measuring technology in monitored, air-conditioned laboratories, rolling bearings are fully measured as regards their dimensional and shape requirements. Trained personnel with over 40 years of experience implement customer-specific measurement tasks and, if required, evaluate the resulting measurements relative to the state of the art.

But demand for rolling bearing analysis extends well beyond Germany’s borders. “We noticed an increase in requests for rolling bearing analysis in China. Through our strong group of companies, we have managed to respond to such requests and offer rolling bearing analytics directly on-site in China as a pre-shipment third-party. This gives our customers the advantage of testing QA issues directly at the supplier in China.”

The customer receives substantiated measurement results in the form of an individual test report with included measurement protocols. Another option for documentation is the initial sample inspection report (ISIR). With this, customers can offset any defects in rolling bearing quality at an early stage and thus meet the quality requirements of their own customers.


B&P2024 B&P2024