Dust-proof ball bearing thanks to the labyrinth construction
The ball bearing retainers at both sides of the armature have a labyrinth construction to make the ball
bearings dust-proof.
Labyrinth
Commutator
Ball bearing (6301VVCM)
Ball bearing (6000VVCM)
Labyrinth
Armature shaft
Housing
Dust seal
Fan
Bearing cover
-2-