I have a project that requires an extremely high rotation rate motor, and I have a 2.5" HDD that I'd like to take the motor out of. I chose a 2.5" HDD for lightweighting reasons and for the drive platter size.

Upon disassembly, I discovered that the motor was mounted with a press fit or epoxy. The method of mounting was something I had neglected to consider, but fortunately I didn't purchase a new HDD for this experiment.

I have access to a milling machine and can cut the motor out, along with a built-in mounting bracket, but this would be tedious and I don't really want to do this. Does anyone know whether it is possible to extract a usable motor of this type from the HDD casing? If it is possible, how?

Alternatively, if anyone knows where I can find pre-balanced motor/disk combinations that can hit 10+ kRPM without breaking the bank, I'd be extremely interested in learning where such things exist.

  • 1
    $\begingroup$ most hard drives spin at around 7200 rpm ... not sure if the motor can be pushed higher $\endgroup$
    – jsotola
    Jan 24, 2020 at 5:20
  • $\begingroup$ @jsotola I was careful to purchase a 15,000 rpm HDD. $\endgroup$
    – CoilKid
    Jan 24, 2020 at 16:39


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