The Z-axis stepper motor temperature is too high

Sovol SV06 Plus ACE
1

I have a new issue. The Z-axis stepper motor gets extremely hot. After a few dozen minutes of printing, the bottom of the motor becomes so hot that I can’t touch it with my hand.

I tried adjusting the voltage, and also tested both manual and automatic bed leveling, but neither solved the problem. Lowering the voltage to 0.7 and using Z-hop (spiral lift) helps a little, but not much. However, when the Z-axis moves quickly, such as during the homing process, it makes a very loud noise.

I’d like to know if there are any other settings that can help reduce this overheating. It feels like the temperature is beyond a normal level, so something must be wrong. For example, could it be related to the alignment of the printer frame (leveling or vertical alignment)?

I’m already planning to install heatsinks and a fan.

What’s strange is that the Y-axis motor also overheated at the beginning. After I lowered the voltage slightly, it became fine. In theory, the Y-axis should have a heavier workload, right?

2

Hello,

If your stepper motor is making noise, this is not normal.

Send an email to info@sovol3d.com with your order number and a description of the problem.

They will respond within a week and will likely send you another motor.

3

Are both Z motors getting hot?

No. The Z motors have to have significant hold current to ensure the gantry doesn’t drop between moves. Turn off your printer and push down on the gantry until it moves.

4

Could you please elaborate more on what you mentioned:

Turn off your printer and push down on the gantry until it moves.

Are your Z-axis motors also very hot?

5

I don’t have the same printer. On my SV07 both Z motors get very warm.

I was trying to explain why the Z motors get hot without lots of movement. They have to constantly HOLD the Z screws from turning to maintain the Z height.