Bearing gap determined depth and width
AssigneeSeagate Technology LLC
InventorsHans Leuthold, Paco G. Flores, Chris Woldemar
Life of this patent
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Abstract
Provided herein, is an apparatus that includes a fluid dynamic bearing defined in a gap between a stationary component and a rotatable component. The fluid dynamic bearing includes a first portion of the gap at an axial end of the fluid dynamic bearing, and a second portion of the gap. The first portion of the gap is narrower than the second portion of the gap. A groove in the fluid dynamic bearing on the stationary component or the rotatable component includes a portion of a predetermined width or a predetermined depth. The portion of the predetermined width or predetermined depth is selected based on the first gap or the second gap.
Claims20
An apparatus comprising:
- a fluid dynamic bearing defined in a gap between a stationary component and a rotatable component, wherein
- the fluid dynamic bearing includes a first portion of the gap at an axial end of the fluid dynamic bearing, and a second portion of the gap, and
- the first portion of the gap is narrower than the second portion of the gap;
- and
- a groove in the fluid dynamic bearing on the stationary component or the rotatable component, wherein
- the groove includes a portion of a predetermined width or a predetermined depth, and
- the portion of the predetermined width or predetermined depth is selected based on the first portion of the gap or the second portion of the gap.
An apparatus comprising:
- an inner component;
- an outer component, wherein the inner component and outer component define a fluid dynamic bearing;
- a first gap and a second gap in the fluid dynamic bearing, wherein the first gap is narrower than the second gap;
- and
- a first groove portion in the first gap and a second groove portion in the second gap, wherein a width of the first groove portion is different from a width of the second groove portion, or a depth of the first groove portion is different from a depth of the second groove portion.
An apparatus comprising:
- a fluid dynamic bearing defined by a stationary component and a rotatable component, wherein the stationary component and rotatable component are configured for relative rotation;
- a first groove portion in the fluid dynamic bearing, wherein a first groove portion width or a first groove portion depth is configured to produce a first predetermined stiffness in the fluid dynamic bearing, wherein the first predetermined stiffness is based on a first gap in the fluid dynamic bearing;
- and
- a second groove portion in the fluid dynamic bearing, wherein a second groove portion width or a second groove portion depth is configured to produce a second predetermined stiffness in the fluid dynamic bearing, wherein the second predetermined stiffness is based on a second gap in the fluid dynamic bearing.
Dependencies are inferred from the claim text.