Teardown a Spindle Hard Disk

There is a 2.3 Inch Spindle Hard Disk where already have problem and planning to dispose. I have done a teardown of the Hard Disk and see inside in details. Below is the short Brief Video about teardown of the Hard Disk



Platter
A disk platter is a circular shaped disk with a magnetic coating inside the hard drive. It can record data on both the top and bottom surfaces. The platters are typically made using an aluminum, glass, or ceramic substrate. A thin coating is deposited on both sides of the substrate, mostly by a vacuum deposition process called magnetron sputtering.

Spindle
A spindle disk is a component that holds the platters in place. The spindle is responsible for keeping the platters in a fixed position with enough space for the read/write arms to get to the data on the disks. The spindle motor is what causes the disks in Hard Disk to rotate, and the precision of these motors determines the capacity and speed of Hard Disk where it measure by RPM (Rounds Per Minute)

Actuator
An actuator is a device that converts energy into motion. In the context of hard drives, an actuator is used to move the read/write heads across the surface of the disk platters to read or write data.

The actuator arm is the component that holds the read/write heads and moves them across the surface of the disk platters. The arm is connected to an actuator axis, which is used to control the arm’s positioning. When a computer needs to access data, it sends a signal to the actuator to move the arm, and in turn, the read/write heads, to the correct position.

R/W (Read and Write) Head
A read/write head is a device on the arm of a hard drive that reads and writes data from disk platter. The read/write head is responsible for transforming the platter’s magnetic field into electric current (reads the disk) or, vice versa, transforming electric current into magnetic field (writes the disk). The read/write head moves above the disk surface with clearance of as little as nanometers. The flying height has been decreasing with each new generation of technology to enable higher areal density. The flying height of the head is controlled by the design of an air bearing etched onto the disk-facing surface of the slider. The role of the air bearing is to maintain the flying height constant as the head moves over the surface of the disk. The air bearings are carefully designed to maintain the same height across the entire platter, despite differing speeds depending on the head distance from the center of the platter.