Tolerance ring for data storage with overlapping tab feature for mass control

1. A tolerance ring used in coupling an actuator to a pivot bearing, comprising:

a substantially cylindrical base portion having a first radius about a central axis and extending for a length parallel to the central axis, the cylindrical base portion having a first tab and a second tab extending substantially along the length of the cylindrical base portion, the first tab is positioned proximate to and radially displaced relative to the second tab such that a radial gap is formed between the first tab and the second tab; and

a plurality of contacting portions, each contacting portion projecting radially at a second radius about the axis.

2. The tolerance ring of claim 1 , wherein the second radius of the contacting portion is less than the first radius of the base portion.

3. The tolerance ring of claim 1 , wherein the second radius of the contacting portion is greater than the first radius of the base portion.

4. The tolerance ring of claim 1 , wherein the first tab overlaps the second tab.

5. The tolerance ring of claim 1 , further comprises:

radially displacing the first tab at a second radius about the axis;

radially displacing the second tab at a third radius about the axis, such that a radial gap is formed between the first tab and the second tab; and

wherein the second radius is greater than the first radius and the third radius is less than the first radius.

6. A tolerance ring, comprising:

a substantially cylindrical base portion having a first radius about an axis and extending an axial length along the axis;

the cylindrical base portion having a first tab and a second tab along the axial length; and

wherein the first tab is positioned proximate to and radially displaced relative to the second tab such that a radial gap is formed between the first tab and the second tab.

7. The tolerance ring of claim 6 , further comprising:

a plurality of contacting portions, each contacting portion project a radial distance from the base portion.

8. The tolerance ring of claim 6 , wherein the first tab overlaps the second tab.

9. An actuator arm assembly for an information storage device, comprising:

an actuator arm;

an actuator pivot bearing;

a tolerance ring retaining the actuator pivot bearing relative to the actuator arm and maintaining mass eccentricity of the actuator arm, wherein the tolerance ring comprises:

a substantially cylindrical base portion having a first radius about a central axis and extending for a length parallel to the central axis, the cylindrical base portion having a first tab and a second tab extending along the length of the cylindrical base portion, the first tab is positioned proximate to and radially displaced relative to the second tab such that a radial gap is formed between the first tab and the second tab; and

a plurality of contacting portions, each contacting portion project radially at a second radius about the axis.

10. The actuator arm assembly of claim 9 , wherein the second radius of the contacting portion is less than the first radius of the base portion.

11. The actuator arm assembly of claim 9 , wherein the second radius of the contacting portion is greater than the first radius of the base portion.

12. The actuator arm assembly of claim 9 , wherein the first tab overlaps the second tab.

13. The actuator arm assembly of claim 9 , wherein the tolerance ring comprises a 300 Series stainless steel.

14. The actuator arm assembly of claim 9 , wherein the first tab is radially displaced at a third radius about the axis that is greater than the first radius of the base portion.

15. The actuator arm assembly of claim 14 , wherein the second tab is radially displaced at a fourth radius about the axis that is less than the first radius of the base portion.

16. The actuator arm assembly of claim 9 , wherein the second tab is radially displaced at a fourth radius about the axis that is less than the first radius of the base portion.