A Comparison of Turning and Stationary Groove Bearings for Data Storage Equipment Spindle Motors under Transient Contact Conditions

This paper compares the turning and stationary groove configurations of oil lubricated journal bearings for spindle motors of data storage equipment under transient contact conditions such as start-up and shut-down. Shortening the startup time reduces in a linear manner the wear of the herringbone groove and multi-taper bearings in both turning and stationary groove configurations. Lastly, stronger braking control is necessary for the turning groove configuration.