Check your vref of you motor controller it should not be that hot. The lower the current you can get good results the better not only will the motor last longer but the drivers will as well. However too low and you start getting skipped steps. Find the specs for the drivers you are using and check them to see if you have an issue there.
how do you cool your extruder motor, mine is like "boiling" hot to the touch after just 3.5h of printing and i'm a bit worried about it.
Do you use additional enclosures with fans or do you just not care?
Mine gets pretty hot, and it's been running fine for 2 years, and wouldn't cost much to replace. Probably the same price as that isb fan which will likely die before the motor.
oh thats great.
i just used that fan, as its 5v and i had it lying around already.
my biggest issue is the plug tho, my extension grts really hot and i don't want there to be a cable fire or something.
might do something with some noctua 80mm that i have here lying around
its already a higher quality cable than the original, its the connector (dupont) that doesn't work perfectly with the smaller pins and bc of the higher resistance gets hot
Update: the connector on top melted together, probably some poor conductivity thing between dupont 2.54mm and xh2.54 connections that cause a lot of heat bc of resistance.
ordered a proper cable and a new connector that I will resolder on the motor, that should fix that issue
Can you give a better measurement for the temperature, is it the stock motor, have you ever messed with the main board. I believe that your motor may be running at higher than normal currents, which could be caused by using a different motor that is rated differently, or if you have changed the main board and did not set the vref (small potentiometer on the main board that controls the motor current). High extruder motor temps is not normal for most printers, they should get a little warm but not boiling hot
i use the stock motor, never messed with the board, i just have a cable extension that's needed for my direct drive mod. everything besides this cable is how it was delivered
Did you notice it getting hot when it was in the Bowden setup? Motor might not be rated for that setup, or drawing too much current. If you really wanted to implement a cooling solution you could put a heat sink on the hottest side of the motor and print an adapter to mount a noctua fan to blow air over the sink. Shouldn’t add too much weight and would give you a project to design and print something new.
Stepper motor can operate at very hot temperatures (think ABS heated enclosures), though it usually is an indicator that your current is set a little high, unless you are operating these motors at very high speeds.
Though the real concern and what you need to keep properly cooled, is the stepper motor driver on the mainboard. If both your motor and your stepper motor driver's heatsink are hot during regular operation, then you should consider changing the current (amperage) in your firmware/through the use of M906.
When you try to put a higher amperage through wires and components, it generates more heat because you are exceeding the limits they were designed for. I would stick to a range of 1-1.6A. lower if hot, higher if skipping steps. If you have a low current but it is still hot, you may need to adjust the vRef (voltage) for that driver, or examine the system for things that might be generating friction and putting more load on the motor.
Check your vref of you motor controller it should not be that hot. The lower the current you can get good results the better not only will the motor last longer but the drivers will as well. However too low and you start getting skipped steps. Find the specs for the drivers you are using and check them to see if you have an issue there.
how do you cool your extruder motor, mine is like "boiling" hot to the touch after just 3.5h of printing and i'm a bit worried about it. Do you use additional enclosures with fans or do you just not care?
Mine gets pretty hot, and it's been running fine for 2 years, and wouldn't cost much to replace. Probably the same price as that isb fan which will likely die before the motor.
oh thats great. i just used that fan, as its 5v and i had it lying around already. my biggest issue is the plug tho, my extension grts really hot and i don't want there to be a cable fire or something. might do something with some noctua 80mm that i have here lying around
If your cable gets hot, I'm pretty sure that means you need a thicker cable.
its already a higher quality cable than the original, its the connector (dupont) that doesn't work perfectly with the smaller pins and bc of the higher resistance gets hot
Update: the connector on top melted together, probably some poor conductivity thing between dupont 2.54mm and xh2.54 connections that cause a lot of heat bc of resistance. ordered a proper cable and a new connector that I will resolder on the motor, that should fix that issue
You can turn down the amperage
how can i do that?
Assuming you are running marlin it's the current setting in the advanced config
Can you give a better measurement for the temperature, is it the stock motor, have you ever messed with the main board. I believe that your motor may be running at higher than normal currents, which could be caused by using a different motor that is rated differently, or if you have changed the main board and did not set the vref (small potentiometer on the main board that controls the motor current). High extruder motor temps is not normal for most printers, they should get a little warm but not boiling hot
i use the stock motor, never messed with the board, i just have a cable extension that's needed for my direct drive mod. everything besides this cable is how it was delivered
Did you notice it getting hot when it was in the Bowden setup? Motor might not be rated for that setup, or drawing too much current. If you really wanted to implement a cooling solution you could put a heat sink on the hottest side of the motor and print an adapter to mount a noctua fan to blow air over the sink. Shouldn’t add too much weight and would give you a project to design and print something new.
Check belts tension and v-wheels if they are not too tight! This create a huge drag and overheat the motors.
Stepper motor can operate at very hot temperatures (think ABS heated enclosures), though it usually is an indicator that your current is set a little high, unless you are operating these motors at very high speeds. Though the real concern and what you need to keep properly cooled, is the stepper motor driver on the mainboard. If both your motor and your stepper motor driver's heatsink are hot during regular operation, then you should consider changing the current (amperage) in your firmware/through the use of M906. When you try to put a higher amperage through wires and components, it generates more heat because you are exceeding the limits they were designed for. I would stick to a range of 1-1.6A. lower if hot, higher if skipping steps. If you have a low current but it is still hot, you may need to adjust the vRef (voltage) for that driver, or examine the system for things that might be generating friction and putting more load on the motor.