16 and stator coils 18 which have cores of laminar plates 20 or the like the rotary hub includes permanent magnet elements 22 of generally conventional design these may be poles of a single ring magnet having multiple poles the magnets or poles 22 are held in a magnet sleeve 24 the hub 12 includes a sleeve 26 inside the sleeve 26 is a shaft 28 which is journaled into the base 16 of the stator portion 14 the shaft 28 includes an axial load thrust plate 30 at one end thereof the thrust plate 30 is sealed off from the outside by an end cap 32 which creates what is known as a dead end design because of the physical seal formed by the cap 32 and the sleeve 26 referring to fig1 a which is an enlarged view of a portion of the motor of fig1 there is a radial gap 36 between the sleeve 26 and the shaft 28 as well as an axial gap 38 between the bottom of the thrust plate and the sleeve and a clearance 40 between the top of the thrust plate 30 and the end cap 32 finally there is a radial gap 42 between the sleeve 26 and the radially outer most end of the thrust plate 30 collectively the gaps 38 42 and 40 form a dead end cavity for the thrust plate 30 all of the gaps 40 42 38 and 36 are filled with a lubricating fluid or oil 44 which forms a fluid bearing and allows the hub 12 and the sleeve 26 to rotate with respect to the shaft 28 and the thrust plate 30 referring to fig7 the gap 36 extends.