3 ms·
About ~3/4 of the power a drive uses goes into the spindle motor. Only a relatively small part of that is dissipated in the bearings (a quarter or so), all the
by drivethrowinguy 10y ago
About ~3/4 of the power a drive uses goes into the spindle motor. Only a relatively small part of that is dissipated in the bearings (a quarter or so), all the rest is gas-platter friction, turbulences due to the heads etc.
Fun-fact aside: The head fly height in helium drives is ~1 nm.