CLANKING SOUND

[bestrada11]

ON MY Y AXIS MOTOR WHICH IS ON MILLTRONICS KNEE MILL AND IS A MT30M4-38 MADE BY IIC BUT IDENTICAL TO A SERVO DYNAMICS MOTOR IS EVERY RESPECT. I HAVE A WEIRD CLANKING SOUND WHEN THE MOTOR IS RUNNING AND ALSO I PULLED THE MOTOR AND WHEN TURNING BY HAND THE MOTOR HAS SOME SLOP WHEN GOING FROM CCW TO CW AND AT THE EXTENTS OF THE SLOP THERE IS A CLANK AND THEN THE SHAFT HAS DRAG ON IT. I TOOK THE CAP OF THE BACK AND ITS IN FRONT OF THE ENCODER MORE IN THE CENTER OF THE BODY. WHAT COULD THIS BE?

[txcncman]

Unless the shaft is broken, motors don't have slop. Gears can have slop. Pulleys attached to shafts can have slop if not mounted correctly.

[LUCKY13]

This sounds like the rotor may be bouncing back & forth in the case. This could be because bearings are getting slop in the axial dirrection, or the springs that are suppost to load the rotor have been hot and lost there springy action. It also could be the housing has been cut/warn from a bearing that is getting tight and then it spun in the bearing housing, or it could be beating the housing out from the rotor beating back & forth.



WIth the motor together and you grab the shaft and move it in & out lenthways to the motor?

Or can you move it side to side?


I am sorry but motors do get slop txcncman. In different ways than gears & such, but slop they can have.


Jess

[txcncman]

Originally Posted by bestrada11 ... WHEN TURNING BY HAND THE MOTOR HAS SOME SLOP WHEN GOING FROM CCW TO CW ...

If all he is doing is supplying radial load, there is no way on earth the motor can be showing signs of slop. In your example, you are talking about lateral and axle loads. The OP did not say "when pushing the shaft in and out" or "when pushing the shaft side to side".

[bestrada11]

The magnet had realeased from the body and attached itself to the armature. So between slaming against the magnets to the left and right seenmed like slop. Once it had come to rest against the other magnets it was rubbing on the armature causeing drag. Hope this settles it and clears things up. Here goes another 1600 on a machine I haven't really been able to use anyway