I recall hearing that some machines, I don't know if the machine you are talking about is one, have issues where the encoder disk can loosen off the motor shaft. I might inquire about this. The scenario I heard about it was mentioned that a service tech. reattach or tighten the screw which holds it to the shaft.
Having worked on motors in a non CNC applications. I think the encoders are attached firmly to the shafts, but if this is an earlier machine, the motor design could be different and require this.
I throw this out not to start rumors, but to see if anyone else has heard this or for you to investigate as a possible solution.
Please reply to let me know if I am full of **it or if this is true. |