applications of ceramic magnets:
speaker magnets
dc brushless motors
magnetic resonance imaging (mri)
magnetos used on lawnmowers and outboard motors
dc permanent magnet motors (used in cars)
separators (separate ferrous material from non-ferrous)
used in magnetic assemblies designed for lifting,holding,retrieving and separating
magnetic door catcher
instrument and meters
toys
arts and crafts
attributes of ceramic magnets:
least expensive material compared to alnico and rare earth magnets
high intrinsic coercive force
available in simple shapes only due to manufacturing process
lower service temperature than alnico,greater than rare earth
lower energy product than alnico and rare earth magnets
most common grades of y25,y30,y30h-1,y30h-2,y32,y33 ceramic are 1,5 and 8 (1-8 possible)
tolerances:
for as pressed material,tolerance on the thickness (direction of magnetization) is 005inch. other dimensions are 2% or 010inch,whichever is greater.