A spindle motor for a hard disk drive having a stationary component with a first
bearing surface, and a rotating component with a second bearing surface located
in opposing relationship with the first bearing surface. The first and the second
bearing surfaces form a hydrodynamic bearing. A bearing gap is formed between the
first bearing surface and the second bearing surface, the bearing gap being filled
with lubricating fluid. An oil-free recess is provided in the motor for placement
of electromagnetic components of the motor. The stationary component is provided
with a first set of seal surfaces, and the rotating component is provided with
a second set of seal surfaces. The seal surfaces of the first set are located opposite
the seal surfaces of the second set and form a labyrinth seal sealing the bearing
gap from the oil-free motor recess.