Motor . (Squirrel cage ?)

I have a motor spindle from something i took apart.

Looks like a squirrel cage but it appears as though the 'copper bars' are a thin plating on the surface.

Is this likely, they appear to be about 3 thou thick, or proud of the surface.

2 cm diameter about 10 cm long , motor is rated at 500 W at 50,000 rpm.

Whole thing has a ground or polished appearance.

Photo would help 50000 rpm suggests its fed from a high frequency source, probably multiphase (3 or more) Apart from curiosity or a rolling paper-weight, what use is it to you

jackrae: Photo would help 50000 rpm suggests its fed from a high frequency source, probably multiphase (3 or more) Apart from curiosity or a rolling paper-weight, what use is it to you

I took it apart after a leak in my shed made it rusty. I have another which still works. It is VFD driven. Approx 20 yr old kavo spindle.

Spindle moulders go at huge speeds..

regards

Allan.

The copper will be extruded hot under pressure into the rotor laminations, then skimmed in a lathe (which is why they stand slightly proud). Well that's how aluminium ones are done - copper makes a more compact more efficient motor. http://www.encyclopedia-magnetica.com/doku.php/squirrel_cage_rotor

You are right, i took a file to it.