Router Forums banner
1 - 7 of 7 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter · #1 ·
Hi everyone.
I have this desktop cnc machine, I bought it last year for engraving some products on my shop.
Last week, I had a motor running bad so, I decided to replace it. Here comes the problem, the new motor seems to not have enough power to move the axis.
I tried adjusting the tension of both belts and also lubricated everything, but nothing seems to work. I have been struggling with this for hours and I'm kind of frustrated.
The motor I bought is a Nema 17. I would appreciate if any of you could give me some advice or a solution.

Edit. Video of the problem

Thanks,
Santiago.
 

·
Official Greeter
Joined
·
20,101 Posts
Welcome to the forum, Santiago.
What is the differnce in specs/size?
 

·
Registered
Joined
·
142 Posts
First thing I would be trying would be to remove the motor and leave it connected electrically. Then try a brief run while checking the motor rotation etc. This should verify whether the stepper driver, interconnect cabling and motor are capable of running. Then try to drive the system that the motor should operate by hand, checking for grabbing, friction etc.
I'm suspecting that the issue is either mechanical binding or component/system failure in the controller, power supply, cabling etc. If it is electrical, you can also swap motor connections at the controller so you have a short run with the controller driving a known good motor, and a known good controller driving a motor that you are not sure off. That helps isolate the issue more, to PSU and controller or cable and motor. Keep swapping like this until you can isolate where the issue actually is, then you can rectify or replace that section.
 

·
Registered
Joined
·
2 Posts
Discussion Starter · #6 ·
First thing I would be trying would be to remove the motor and leave it connected electrically. Then try a brief run while checking the motor rotation etc. This should verify whether the stepper driver, interconnect cabling and motor are capable of running. Then try to drive the system that the motor should operate by hand, checking for grabbing, friction etc.
I'm suspecting that the issue is either mechanical binding or component/system failure in the controller, power supply, cabling etc. If it is electrical, you can also swap motor connections at the controller so you have a short run with the controller driving a known good motor, and a known good controller driving a motor that you are not sure off. That helps isolate the issue more, to PSU and controller or cable and motor. Keep swapping like this until you can isolate where the issue actually is, then you can rectify or replace that section.
Thanks a lot, I could make it work. I checked the cabling and the belt alignment.
 

·
Registered
Joined
·
2,321 Posts
How much load is the motor seeing? Can you turn the shaft with now power and without the motor connected? I'm betting that something desperately needs lubrication or realignment. Without power, try to turn the motor shaft too. Compare these tests to similar tests on the other motors. Motors usually run until you let the magic smoke out, or the bearings get so bad that they make noise.

Charley
 
1 - 7 of 7 Posts
Top