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Only slightly related but does anyone know anything about motors with magnetic bearings? As in, no contact or friction. I'm looking for a hardware project
by DonsDiscountGas 4mo ago
Only slightly related but does anyone know anything about motors with magnetic bearings? As in, no contact or friction. I'm looking for a hardware project
- deadeye 4mo agoI wonder if that is even possible since the whole point of the motor is an imbalance of magnetic forces.
- SJC_Hacker 4mo agoTheoreticaly the rotor could float on top of the stator, although It it would have to be always on.
- DonsDiscountGas 4mo agoAccording to Claude it requires active control. So complicated and only used in very niche applications.
- andruby 4mo agomaglev but those do linear acceleration instead of rotational. seems tricky though for cars with such uneven surfaces.
- superxpro12 4mo agoI think air bearings exist? Maybe some prior art to consider
- DonsDiscountGas 4mo agoOh yeah tons. I'm not looking to invent just tinker
- msandford 4mo agoClosest I can think of is flywheel "battery" storage tech many of which do have magnetic bearings and also some way to get power in and out of the flywheel so basically a motor. It's not exactly what you're looking for but there's prior art out there.
- klaff 4mo agoThere are fluid dynamic bearings which were used in VCRs and probably hard drives and definitely laser printer mirror motors - two sets of precise herringbone patterns cut into the ID of a bearing column and a tiny bit of oil that gets entrained between rotor shaft and that bearing column. As the motor speeds up the oil forms pressurized donuts. Only works at speed and generally only useful when there aren't side loads so applications are limited. Rolling element bearings are a quite developed technology and hard to beat in most applications.