Actuator comb having a stepped inner bore

摘要

A head stack assembly (HSA) having an actuator comb with a stepped inner bore may have an upper portion of the inner bore with a first diameter that is greater than the diameter of a lower portion of the inner bore. Therefore, little friction and resistance is encountered when force fitting a pivot-bearing assembly into the upper portion of the stepped inner bore, thereby avoiding surface damage and the generation of unwanted debris particles. The HSA may further comprise a plurality of tolerance rings to couple the actuator comb with the pivot-bearing assembly, such as one tolerance ring positioned below the step feature and one tolerance ring positioned above and seated on the step feature of the comb inner bore.

主权项

1. A head stack assembly comprising:
an actuator comb comprising an actuator arm and a stepped inner bore having a step feature; a voice coil coupled with said actuator comb; and a tolerance ring disposed within said stepped inner bore of said actuator comb to couple said actuator comb with a pivot-bearing assembly interposed between a pivot-shaft and said actuator comb, wherein said tolerance ring is seated on and in contact with a radial extending surface of said step feature of said stepped inner bore when fully disposed within said stepped inner bore.