Yaskawa AC Servo

[HillBilly]

I have this motor that needs bearings. Does anyone know why the manufacturer recomends you never disassemble it? Either way I am going to!

Darek

[Al_The_Man]

Usually because of the danger of de-magnetizing, I have never had a problem, although if you want to play it safe, slide a steel tube over the permanent magnet rotor, also you have to take care removing the commutation/encoder.
with a DC motor you slide a plug into the core as the stator is permanent magnet.
Most motors today are rare earth magnetic material and take alot before de-magnetization.
Al.

[jimhuffman1]

I have found recently that some versions of the yaskawa motors use a very hard epoxy to hold the optic rotor in place on the shaft...be extra careful removing the disk if you have this type

[acservotom]

I work on ac servo motors fanuc yaskawa allen bradly and more if u take the encoder off you will not beable to set it to the motors lock up with out a commutation reading divice..If you already took it apart good luck after you put it together all its going to do is vibrate and not move. Without the proper setting
if your able to leave the coupling for the encoder on the rotor then you might have a good chance of it working...some yaskawa bearings dont clear the coupler.... any questions ask me....