Hard Disk Motor
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Most motors use a feedback-circuit so the controller 'knows' when the drive is running at the correct speed before moving the heads over the data area on the platters. One-way of achieving this is for the drive to send a 'sync signal' or pulse each time the motor completes a single revolution. This pulse is received by the electronics on the controller card and the rotational speed is calculated according to the time between pulses. Once the speed is within the specified range, then continuous speed is upheld by precise adjustments to the voltage sent to the motor.
Modern hard disk manufacturers no longer use standard ball-bearing assemblies on their motors, and choose to use a magnetic lubricant instead. This type of bearing is known more commonly as a Fluid Dynamic Bearings (FDB). Because the lubricant is magnetic, they have much greater wear resistance because the lubricant is in contact with all moving parts and also run considerably quieter than the older drives.
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All data recovery work undertaken by MjM is under a Free diagnosis and a no recovery no-fee policy. If we can't recover your data, then there is no fee for you to pay.
If you have lost data or your drive has stopped working contact us now.