Abstract: A collet bush includes a tapered cylindrical outer surface, a cylindrical inner surface and a flow path. The collet bush is to be inserted into a concentric collet that is attached to a handheld tool driving device in order to position the tool driving device to a workpiece. The tool driving device holds, rotates and feeds a tool. The tool driving device has a function to suck chips. The outer surface is for expanding the concentric collet. The inner surface forms a through hole for slidably fitting the tool. The flow path is for taking in air used for sucking the chips inside the collet bush. The tool driving device includes the above-mentioned collet bush and the concentric collet.

Abstract: A set screw (56) is provided, which has a screw main body (71), a male thread portion (75) which is formed on an outer periphery of the screw main body (71), and a drain hole (78) which penetrates a central portion of the screw main body (71) in an extension direction of the screw main body (71). The blade root ring (53) has a hole (63) which extends radially outward from an inner peripheral surface (53a) of the blade root ring (53), and a female thread portion (64) which is formed on an inner peripheral surface (63a) of the hole (63), and the set screw (56) is screwed into the female thread portion (64).

Abstract: A set screw (56) is provided, which has a screw main body (71), a male thread portion (75) which is formed on an outer periphery of the screw main body (71), and a drain hole (78) which penetrates a central portion of the screw main body (71) in an extension direction of the screw main body (71). The blade root ring (53) has a hole (63) which extends radially outward from an inner peripheral surface (53a) of the blade root ring (53), and a female thread portion (64) which is formed on an inner peripheral surface (63a) of the hole (63), and the set screw (56) is screwed into the female thread portion (64).

Abstract: A lower cost per unit of storage hard disk drive (HDD) includes multiple disk stacks movably coupled to a guide rail and a head stack assembly (HSA) for accessing the magnetic-recording disks of each of the multiple disk stacks. A disk stack feeding mechanism may be implemented to move each of the disk stacks along the guide rail, and a positioning mechanism may be implemented to align and to temporarily fix a disk stack relative to an HSA. An internal filtering system may also be implemented for keeping contamination-free a compartment in which the disk stacks and HSA are operational.

Abstract: A lower cost per unit of storage hard disk drive (HDD) includes multiple disk stacks and a head stack assembly (HSA) movably coupled to a rail for accessing magnetic-recording disks of each of the multiple disk stacks. Such an HDD may include multiple columns of linearly-arranged disk stacks with an HSA corresponding to each column, where the disk stacks on each side of the rail are positioned for asynchronous access by the HSA, and may include multiple HSAs coupled to the rail, where the disk stacks on each side of the rail are positioned for simultaneous access by respective HSAs being moved either synchronously or independently.

Abstract: A disk drive system and method for implementing the same. The disk drive system of the present invention includes a discoid medium which rotates about its rotation axis and stores data. An actuator includes a head for reading or writing data from or in the discoid medium as it bidirectionally rotates about its bidirectional-rotation axis. The disk drive system further includes a housing which has a predetermined width and houses the discoid medium and the actuator, wherein the rotation axis of the discoid medium and the bidirectional-rotation axis of the actuator are arranged at the center in the width direction of the housing, and wherein size of the discoid medium is smaller than that of a discoid medium corresponding to a form factor of the housing.

Abstract: A disk drive system and method for implementing the same. The disk drive system of the present invention includes a discoid medium which rotates about its rotation axis and stores data. An actuator includes a head for reading or writing data from or in the discoid medium as it bidirectionally rotates about its bidirectional-rotation axis. The disk drive system further includes a housing which has a predetermined width and houses the discoid medium and the actuator, wherein the rotation axis of the discoid medium and the bidirectional-rotation axis of the actuator are arranged at the center in the width direction of the housing, and wherein size of the discoid medium is smaller than that of a discoid medium corresponding to a form factor of the housing.

Abstract: A disk drive system and method for implementing the same. The disk drive system of the present invention includes a discoid medium which rotates about its rotation axis and stores data. An actuator includes a head for reading or writing data from or in the discoid medium as it bidirectionally rotates about its bidirectional-rotation axis. The disk drive system further includes a housing which has a predetermined width and houses the discoid medium and the actuator, wherein the rotation axis of the discoid medium and the bidirectional-rotation axis of the actuator are arranged at the center in the width direction of the housing, and wherein size of the discoid medium is smaller than that of a discoid medium corresponding to a form factor of the housing.

Abstract: A system for mounting a hard disk enclosure (HDE), includes a casing pivotably mounted to minimize at least one of settle-out dynamics, external rotational vibration, and emitted vibration, the casing allowing the HDE to rotate substantially freely, wherein the center of gravity of the HDE is substantially the same as a pivot point of the casing. Further, a computer chassis includes a housing, at least one disk drive assembly for being housed by the housing, and a plurality of theta-mounts integrally built within the housing.

Abstract: A disk clamping apparatus for a data storage device fixing at least one disk onto a spindle motor, and having: a clamp combined with the spindle motor and applying pressure onto the disk in a first direction, an outer circumference of the clamp contacting a first part of the disk; and a damper installed between the clamp and the spindle motor to damp impact and vibration delivered to the disk via the clamp. The damper is made of a visco-elastic material and adhered to at least one of a bottom of the clamp or an upper part of the hub. Accordingly, it is possible to damp impacts and vibration delivered to the disk via the clamp, thereby reducing an incidence of the disk bumping against a head, and reducing deterioration of performance of the head.

Abstract: A disk drive system and method for implementing the same. The disk drive system of the present invention includes a discoid medium which rotates about its rotation axis and stores data. An actuator includes a head for reading or writing data from or in the discoid medium as it bidirectionally rotates about its bidirectional-rotation axis. The disk drive system further includes a housing which has a predetermined width and houses the discoid medium and the actuator, wherein the rotation axis of the discoid medium and the bidirectional-rotation axis of the actuator are arranged at the center in the width direction of the housing, and wherein size of the discoid medium is smaller than that of a discoid medium corresponding to a form factor of the housing.

Abstract: A disk drive system and method for implementing the same. The disk drive system of the present invention includes a discoid medium which rotates about its rotation axis and stores data. An actuator includes a head for reading or writing data from or in the discoid medium as it bidirectionally rotates about its bidirectional-rotation axis. The disk drive system further includes a housing which has a predetermined width and houses the discoid medium and the actuator, wherein the rotation axis of the discoid medium and the bidirectional-rotation axis of the actuator are arranged at the center in the width direction of the housing, and wherein size of the discoid medium is smaller than that of a discoid medium corresponding to a form factor of the housing.

Abstract: A disk clamp has a data position in a recording track that is resistant to positional deviations even after temperature cycling is conducted. The distribution of data positions can be centered in the vicinity of the center position. A disk top clamp and hub are made from materials that are stable in terms of chemical properties over a temperature range in which the disk recording apparatus is used and have such a coefficient of elasticity that a clamping force required to clamp the recording disks while the disk recording apparatus is in use can be obtained from the tightening force to tighten the screws. The material of the top clamp and the hub has a thermal expansion coefficient that is close to that of the recording disk.

Abstract: A system for mounting a hard disk enclosure (HDE), includes a casing pivotably mounted to minimize at least one of settle-out dynamics, external rotational vibration, and emitted vibration, the casing allowing the HDE to rotate substantially freely, wherein the center of gravity of the HDE is substantially the same as a pivot point of the casing. Further, a computer chassis includes a housing, at least one disk drive assembly for being housed by the housing, and a plurality of theta-mounts integrally built within the housing.

Abstract: A system for mounting a hard disk enclosure (HDE), includes a casing pivotably mounted to minimize at least one of settle-out dynamics, external rotational vibration, and emitted vibration, the casing allowing the HDE to rotate substantially freely, wherein the center of gravity of the HDE is substantially the same as a pivot point of the casing. Further, a computer chassis includes a housing, at least one disk drive assembly for being housed by the housing, and a plurality of theta-mounts integrally built within the housing.

Abstract: To restrain a flutter of a magnetic disk in a high-speed hard disk drive, a ramp 40 is provided so as to be separated with a predetermined space from a side wall 12a of a base 12. Between the side wall 12a and the ramp 40 is formed a bypass channel 42. An air flow is supplied toward a magnetic disk 22 through the bypass channel 42. By using such a configuration, a flutter of the magnetic disk 22 is reduced.

Abstract: A hard disk device with air stabilizing wings which enable the straightening of the airflow between disks and the suppression of the vibration of disks and actuators.

Abstract: To restrain a flutter of a magnetic disk in a high-speed hard disk drive, a ramp 40 is provided so as to be separated with a predetermined space from a side wall 12a of a base 12. Between the side wall 12a and the ramp 40 is formed a bypass channel 42. An air flow is supplied toward a magnetic disk 22 through the bypass channel 42. By using such a configuration, a flutter of the magnetic disk 22 is reduced.

Abstract: A disk clamp has a data position in a recording track that is resistant to positional deviations even after temperature cycling is conducted. The distribution of data positions can be centered in the vicinity of the center position. A disk top clamp and hub are made from materials that are stable in terms of chemical properties over a temperature range in which the disk recording apparatus is used and have such a coefficient of elasticity that a clamping force required to clamp the recording disks while the disk recording apparatus is in use can be obtained from the tightening force to tighten the screws. The material of the top clamp and the hub has a thermal expansion coefficient that is close to that of the recording disk.

Abstract: A disk drive system and method for implementing the same. The disk drive system of the present invention includes a discoid medium which rotates about its rotation axis and stores data. An actuator includes a head for reading or writing data from or in the discoid medium as it bidirectionally rotates about its bidirectional-rotation axis. The disk drive system further includes a housing which has a predetermined width and houses the discoid medium and the actuator, wherein the rotation axis of the discoid medium and the bidirectional-rotation axis of the actuator are arranged at the center in the width direction of the housing, and wherein size of the discoid medium is smaller than that of a discoid medium corresponding to a form factor of the housing.