Data Storage Institute

Zhejie Liu

Teck Seng Low

Shixin Chen

Qide Zhang

Yuen Ann Mah

Mohammed Abdul Jabbar

Ma Jabbar

A spindle motor ( ) including a stator component ( ), a rotor component ( ), including a hub ( ) for supporting one or more discs, and a bearing assembly between tHe components, formed of a journal bearing ( ) and a thrust bearing ( ), wherein the journal bearing ( ) is an aerodynamic bearing and the thrust bearing is adapted to function in a bi-directional manner and includes an annular member ( ) projecting radially from one of the components into an associated recess ( ) formed in the other of the components. Preferably, the annular member has two opposed bearing faces ( ) arranged adjacent corresponding bearing surfaces of the recess, and a hydrodynamic bearing is formed between the respective bearing faces and surfaces.

Spindle motor with an aerodynamic and hydrodynamic bearing assembly

An electric spindle motor has a base assembly (19) and a hollow notatable hub (16) housing a motor. The hub (16) is mounted for rotation about an axis and a stator (12) is mounted on the base assembly (19) inside the hub (16). A liquid filled journal bearing (11, 21) acts between the base assembly (19) and the hub (16) to provide radial support of the hub (16). A gas filled thrust bearing (26, 27, 35) also acts between the hub (16) and base assembly (19) to provide at least axial support of the hub (16).

Electric spindle motor

An electric spindle motor has a base assembly (19) and a hollow notatable hub (16) housing a motor. The hub (16) is mounted for rotation about an axis and a stator (12) is mounted on the base assembly (19) inside the hub (16). A liquid filled journal bearing (11,21) acts between the base assembly (19) and the hub (16) to provide radial support of the hub (16). A gas filled thrust bearing (26, 27, 35) also acts between the hub (16) and base assembly (19) to provide at least axial support of the hub (16).

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Singapore, Singapore

Zhejie Liu