Spindle motor

Details Spindle motor Spindle motor

1998-01-27

1999-12-21

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 91, H02K 700

Patent

active

060053135

ABSTRACT:
A spindle motor has a fixed member of a motor, a rotor rotatably supported with respect to the fixed member, a shaft provided on either the fixed member or the rotor, a first ball bearing fitted on a head side of the shaft and a second ball bearing fitted on a base side of the shaft and having an axial dimension larger than an axial dimension of the first ball bearing. A circumferential wall, preferably on the fixed member, has a small gap with an outer circumferential wall of an outer ring of the second ball bearing.

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