Performance of hybrid ceramic bearing at high speed condition (Part 1)

摘要

In order to study the performance of hybrid ceramic bearings at high rotational speed applications, we compared the performance of hybrid ceramic bearings set HIP Si{sub}3N{sub}4 balls with that of steel ball bearings by using the test rig whichdrive source is an air turbine.Test results are following:1. Hybrid ceramic bearings show higher rotational speed than steel ball bearings at the same pressure of compressed air.2. Hybrid ceramic bearings show superior accelerating characteristics to steel ball bearings.3. In particular at high rotational speed condition, energy loss of hybrid ceramic bearings is less than that of steel ball bearings.4. Hybrid ceramic bearings have excellent anti-seizure characteristic, so the total amount of feed oil can be reduced.5. As reducing total amount of feed oil, hybrid ceramic bearings show higher rotational speed at constant pressure of compressed air.