Spindle motor with seal structure

Details Spindle motor with seal structure Spindle motor with seal structure

1994-02-17

1997-01-21

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, 384482, H02K 700

Patent

active

055962351

ABSTRACT:
A spindle motor comprises a stationary shaft, a rotor hub rotatably mounted by ball bearings to the stationary shaft, and annular sealing members disposed between the outer surface of the stationary shaft and the inner side of the rotor hub axially outwardly of the ball bearings. The sealing member is directly fitted onto the outer race of the corresponding ball bearing. The outer race of each ball bearing is high precision finished so that the sealing member is definitely coaxial with the stationary shaft regardless of the finishing accuracy on the inner side of the rotor hub. Accordingly, the radial distance between the inner side of the sealing member and the outer surface of the stationary shaft can be minimized with high precision offering an excellent labyrinth effect.

REFERENCES:
patent: 4894738 (1990-01-01), Elsasser
patent: 5227686 (1993-07-01), Ogawa
patent: 5347189 (1994-09-01), Chuta
patent: 5370404 (1994-12-01), Klein
patent: 5402023 (1995-03-01), Nakanishi

Affiliated with

Also associated with

Rating

Spindle motor with seal structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spindle motor with seal structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spindle motor with seal structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2326269