Servo motor quit? Why?

[DavidMillsSaddlery]

Spent the morning setting this up on my Union Lockstitch, and 5 minutes into using it it starts making this noise, and then quit spinning? 

 

[DavidMillsSaddlery]

Just replaced the bushing things? Electrical stuff? And still no go? 

[kgg]

Is this a new servo or a used one? Are you getting a funny / burned smell from the motor. If so, unplug it for safety and possible fire hazard reasons. If it is a new one, you should contact the seller. If it is a used one, you are probably going too have to replace it.

kgg

[Matt S]

Hard to tell but is the spindle turning while the pulley remains stationary? If so it could have a few different causes. All the sewing motors I've worked on have a key which keeps the pulley and spindle locked together. First thing would be to check that's fully engaged into the keyway slot in the bore of the pulley. They key will either be a small square-section rod under an inch long or a semi-circular piece about 3/4" across.

[dikman]

Video was a bit short (in both length and detail) but at the end like Matt said it sounded like the motor was still spinning with no load.

[DSloop]

First servo motor (500 watt)  I bought lasted a month. It just would not run, have no idea what happened. The next one was a Consew 750 watt unit, it is bigger and has worked flawlessly.

[DavidMillsSaddlery]

Sorry for lack of details! This is a Family Brand... I believe it’s a 1/2 HP that I bought 5 or so years ago for a 31-15! It’s only got maybe two pair of chaps on it? Maybe an hour of sewing? 

The spindle and the shaft have both quit spinning, thenbthat noise was never there? 

This may be “self inflicted” as I tied the clutch activation arm all the way down, to keep the motor at a constant speed, and was hoping to use the clutch that’s built into the Union Lockstitch! 

Edited April 8, 2019 by turbotexas

[DavidMillsSaddlery]

31 minutes ago, DSloop said:

First servo motor (500 watt)  I bought lasted a month. It just would not run, have no idea what happened. The next one was a Consew 750 watt unit, it is bigger and has worked flawlessly.

I ordered a Consew from Amazon! I think it’s the 3/4 HP 7500 one? It was supposed to arrive today, but I left for work at 4:00 and it still wasn’t there? 

[dikman]

Got me curious. As servos don't have a clutch I assume you meant the actuating arm that goes to the foot pedal, the idea being that when you turned it on it just went to max speed (or whatever you set as max speed) straight away. If you take the belt off what happens to the motor? Does it run?

[DavidMillsSaddlery]

20 hours ago, dikman said:

Got me curious. As servos don't have a clutch I assume you meant the actuating arm that goes to the foot pedal, the idea being that when you turned it on it just went to max speed (or whatever you set as max speed) straight away. If you take the belt off what happens to the motor? Does it run?

I’ll have to investigate this when I get home! I drive a truck for a living, and I had to leave town for a few days!