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Z axis motors HOT  

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Hennes
(@hennes)
Eminent Member
Z axis motors HOT

Hello World,

I noticed that during printing, the two motors of the Z axis become really hot. I can't touch them. And they need really long to cool down. 

Can anyone confirm that? Could it be an issue?

Cheers

Posted : 20/08/2023 6:10 pm
Lordran_Hollow
(@lordran_hollow)
Active Member
RE: Z axis motors HOT

Yeah, after reading your comment I checked my MK4 this morning and the z-axis motors were both warm to the touch, I believe the print should have stopped around 4:30am, I checked them at around 6:30. I'm sure Prusa wouldn't have chosen motors if they couldn't handle something like that, but who knows. I'll keep an eye on it.

We have two MK3's here at the lab I work at. The next time they're printing I'll see if I can check their motors and see if they exhibit the same thing. If they do, then I'd say this is a non-issue, given that these two printers have about 2000 hours of print time between the two of them and they haven't had any major failures aside from the hot end on one of the printers failing. 

Posted : 22/08/2023 1:55 pm
Hennes liked
Lordran_Hollow
(@lordran_hollow)
Active Member
RE: Z axis motors HOT

Managed to get a feel of the MK3's at work and even had to run home to get a different vehicle and was able to feel my MK4 mid-print. The z-axis motors on both printers were warm, but not unbearably hot. I do have kinda thick calluses on my fingertips, but for me it wasn't hot/warm enough to cause concern. I think this is just a "working as intended" thing. 

Posted : 22/08/2023 7:38 pm
Hennes liked
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Z axis motors HOT

z motors remain energised to reduce the chances of X axis droop. whilst working on the printer

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 22/08/2023 8:04 pm
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