centering cone

centering cone

A short plastic or metal cone used to align a 5.25" floppy disk to the drive spindle. It is inserted into the diskette's center hole when the drive door is closed.
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In addition to the piloted cutter, the driving handle has a nylon centering cone held in place at the muzzle by a spring.
The wipers rely on two centering cones to keep clearance between wiper lip and rod--and, thereby, wiper pressure--uniform around the rail.