組合せセラミック軸受の高速性能 (第1報)

概要

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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_3N_4 balls with that of steel ball bearings by using the test rig which drive 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.
1998-09-10