X-axis oscillation VMC 4020

[Jwl]

Machine is a VMC 4020
Glentek 4050 motors

I have replaced the brushes (both commutator and tach), refinished the commutator, replaced the motor bearings, replaced resolver, swapped both axis and amp cards, and ohmed out all cables. I am at wits end now.

I am fairly fluent with the Fadal construction and programming (CNC88)Anybody have any ideas?

Jeremy

[ROB65]

Have you tried swapping amps to make sure it is not an amplifier problem ?