Blue and White 50W Chinese Laser Y axis NEMA motor issue

[jcoogan]

I have the Blue and White 50W Chinese laser. Recently the Y axis NEMA motor starting having fits starting and stopping. I connected the rotary unit that runs off the same stepper driver to see if the controller had any issues. It doesn't and I had zero issues engraving 20 glasses. So I am guessing it is either the NEMA 23 that runs the Y axis or the wiring for it. I would like to replace the motor but I am having a hard time finding either specs on the one I have or a replacement. Any help would be greatly appreciated. Below is information I got off the existing stepper motor.

Type: 23HD450Y 2S
FH160315 Smooth
Stepper driver JMC 2M542-06

It is a dual shaft with 4 wires.

Thanks,
Jim

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[philba]

Looks like a pretty run of the mill nema 23. Does it need a dual shaft? I see single shaft versions - search for 23HD450Y. I'm guessing that 2S stands for 2 shafts.

Before you buy a new motor, I'd tighten up everything (couplers, mounts, belts, suspenders, ...) and make sure the wiring is good, too. Motors don't usually just go bad.

[jcoogan]

Yes it needs to be a dual shaft, unfortunately. I found the single versions too but can't seem to find that dual one. I am hunting down a spec sheet so I can find another that fits the bill. Thanks for the advice on checking other things. That's today's assignment for me. The laser had a fire in it last year towards the front of the laser and toasted the belt on the bridge. I replaced it and all the end stops. Since then the Y axis has been a little jumpy. After checking this site and others I found that it could be the wiring from the motor to the connector, or potentially the 2 drive belts. The fire was very localized and I caught it right away. But it could have caused the belts to stretch and throw everything out of whack. On the plus side a lot of my business is engraving things on the rotary which is having zero problems.

[Dean448]

It’s always helpful to state your country as folks on this site are from all over.

Steppers don’t normally go bad. Unless they get really hot. I would check wiring, connectors and any mechanicals including belts. Swap the stepper from somewhere else and see if it follows.


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[philba]

Yes it needs to be a dual shaft, unfortunately. I found the single versions too but can't seem to find that dual one. I am hunting down a spec sheet so I can find another that fits the bill. Thanks for the advice on checking other things. That's today's assignment for me. The laser had a fire in it last year towards the front of the laser and toasted the belt on the bridge. I replaced it and all the end stops. Since then the Y axis has been a little jumpy. After checking this site and others I found that it could be the wiring from the motor to the connector, or potentially the 2 drive belts. The fire was very localized and I caught it right away. But it could have caused the belts to stretch and throw everything out of whack. On the plus side a lot of my business is engraving things on the rotary which is having zero problems.

I'd bet money on the belt being messed up. Fire has a tendency to do that...

If you really need a new stepper motor, just find the specs on the single shaft one and get similar but with dual shaft.