[raptor_demon]

Hi i recently had an EOCA or Error over current on my VFD, did a whole bunch of debugging and decided it was the spindle that was dead. So I ordered a new one and took apart the old one.

what i found was quite interesting, the coils had cooked themselves, and there was rust over the insides. i really wanted to see the water jacket design so i decided to cut it in half with an angle grinder.

this model has 3 bearings, 2 as the collet end and one at the back. the back one isn't shown because it exploded all over the kitchen floor when i was taking it apart.

the most likely failure point seems to be the 2 O rings that join the back cap to the spindle body, i think mine leaked from there.

there is also no way to get inside the water channels to clean, so make sure you don't get a blockage in the water jacket.

I was unable to separate the coils from the water jacket and i don't have a press so im unable to test further.

anyway just figured I'd share.

Raptor