Back
17.9.2024
Wear and frictional forces play a major role in contact bearings. Material pairing and geometry 📐 are two important design criteria here. By testing different combinations in a test environment close to the application, the selection can be narrowed down and the overall development costs reduced 📉 before building complex overall samples. A bearing tester can be used to quantify the losses in the bearing. In the case of blood pump development, the risk ⚠ of blood damage 💉 can thus be reduced. We have put this into practice in collaboration 🤝 with our customer.
The concept is simple: an axial force, which is applied using weights, puts load onto the bearings evenly and creates friction. More friction means more losses, so the less the better. Friction is converted into heat ☀ and can therefore be quantified. The bearings run in a small amount of liquid 💧 over a longer period of time. The temperature of the liquid 🌡 is monitored. The ambient temperature is also recorded, as well as the water and ambient temperature of a reference basin in which no bearing is running. This allows the heat development through the individual bearings to be observed and different bearing types to be compared with each other in a standardized manner.
Read more…
