Prevention of Spindle/Bearing Contaminants From Entering Hda Clean Air Environment
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-05
The figure illustrates a hub-spindle assembly for a disk drive used for storing information in a data processing system. Circular magnetic disks 10 are mounted on disk hub 11 and spaced apart by spacing rings 12. Hub 11 and rings 12 are provided with ports 13 to permit air to be pumped in a path which extends from ports 13 across the surfaces of the disks radially outward to their outer perimeter, and then back to the opening 14 between the hub 11 and the base casting 15 to the ports 13. This flow tends to remove heat from the disks which is generated by friction with the air molecules and also tends to remove any particles from the disk surface that might interfere with the data transfer process. Hub 11 is attached to spindle 17, which is mounted for rotation by means of bearing 18 and casting 15.