Re: [CAD_CAM_EDM_DRO] SEM servo motor

antson20022 wrote:

> I have some brand new SEM servo motors that I got on e-bay. P/N is
>MT30H4-44. There is a tach in the back end where I want to put an
>encoder. The problem is getting the tack out. It appears that the
>outside permenant magnets are pressed or glued or something in place.
>I made a puller but the screws pulled out. THEN I have to get the
>armature off, which is going to be a real bugger. Has anyone had any
>experiance getting these out. I was told they would just "pop"
>out...........NOT! Any help would be greatly appricated.
>
>

Why are you destroying these motors? Are you going to use it
with direct drive to your leadscrew? If you drive the screws with
a belt drive, you can select the most desirable ratio, you avoid pumping
high torque through delicate shaft couplings, and you can put the
encoder on the end of the leadscrew.

Jon