Electro-mechanical Components. Two different electromechanical components are used in a hard disk drive: a spindle motor to spin the disk or disks and an actuator to re-position the read-write heads on the desired data track and to maintain its position precisely over the track, while data is being read or written.
What is spindle motor in hard disk?
A spindle motor is a small, high-precision, high-reliability electric motor that is used to rotate the shaft, or spindle, on which the platters are mounted in a hard disk drive (HDD). Most HDD spindle motors spin the platters at a constant rate ranging from 3,600 to 7,200 RPM.
What type of motor is used in hard disk drive?
spindle motor
A typical HDD has two electric motors: a spindle motor that spins the disks and an actuator (motor) that positions the read/write head assembly across the spinning disks.
Which properties of spindle motors make it suitable for utilization in hard disk drives?
Additional conditions set in front of spindle motors are low noise, low cost, low power consumption and less heating during operation. All the above mentioned conditions were satisfied by using brushless DC electric motors.
What is a spindle drive?
Spindle drives convert the power generated by the motor into feed velocity and feed force. The integrated axial bearing can take extremely high axial loads. maxon spindle drives are available with metric, ball screw, and trapezoidal screw spindles.
How does a spindle motor work?
A spindle is devised of a motor, a taper for holding tools, and a shaft that holds together all the separate components. Spindles rotate on an axis, which receives input on movement from the accompanying CNC controller.
What is spindle motor in computer?
Spindle Motors (Hard Disk Drive Motors) While almost everyone is familiar with computer hard disks, only few know that the heart of the hard disk is an electrically commutated DC motor, which is known as a spindle motor. This spindle motor carries the storage disks, which it rotates around its own axis (spindle).
Which type of single phase motor is used for hard disk?
A Universal motor B Shaded pole motor C Capacitor start induction run motor D Capacitor start capacitor run motor 36 What is the angular displacement between starting and running winding of a single phase induction motor?
Are hard drive motors AC or DC?
First of all, note that a common hard disc drive (HDD) spindle motor is in fact a sensorless three-phase brushless dc (BLDC) motor!
What is the difference between a shaft and a spindle?
Spindle is simply defined as a short shaft. Shaft is a rotating member has a circular cross-section and is used to transmit power.
What is an HDD spindle motor?
Hard Disk Drive (HDD) spindle motors are what cause the disks in HDDs to rotate. The precision of these motors determine the capacity and speed of HDDs, making these components critical to HDD performance. Accordingly, these motors must offer superior performance in terms of rotational speed and low Non-Repeatable Run Out (NRRO).
What is the microcontroller for a disc drive spindle motor?
The motor driver chip is DRV11873, the microcontroller is STC15W404A, and the voltage regulator is HT7550-1. Wow! Getting hold of a suitable controller/driver electronics for your salvaged hard disc/optical disc drive spindle motor is not easy because you may need to consider dozens of boards/modules to pick the right one.
What are the requirements for spindle motors?
This means that the crucial requirement for spindle motors is the large ratio between their power and size. Hard drive motors are designed for operation at high speeds over a long period of time. This principle is, as such, problematic in the start and can easily lead to defect.
What is a hard disk drive motor?
Hard disk drive is a compact mechatronic component and there is no lot available space for placing its motor. On the other hand, the motors of the hard disks (called “spindle motors”) must be able to generate enough torque so the magnetic platters could rotate at the desired speed.
