Recently. there has been a growing interest in utilizing surface texture to enhance the tribological properties of sliding components. Particularly noteworthy is the application of tool vibration at ultrasonic frequencies for efficiently generating surface textures. This study focuses on generating surface texture on the end surface of a stainless steel disk through ultrasonic assiste... https://www.roneverhart.com/HGST-Ultrastar-7K6000-HUS726040ALS214-4TB-7-2K-RPM-SAS-12Gb-s-512n-128MB-3-5-SE-Hard-Drive/