1 Topic by bill50here (edited by bill50here 2014-03-08 19:01:44)

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Topic: x axis stepper temp

I run a stock sd2 with heatbed using ABS . Anyone have any idea how hot the x axis stepper motor should run.I had a complete motor on x axis unscrew. I reattached it and ran a temp using a noncontact temp unit.It read 150 deg F avg with bottom of motor at 124 deg and top of motor where it attaches to the holder at 160 F deg while running a print of 10ml test cube. I run a sd2 stock power supply. I wonder if the stepper may be going bad but prints dont show any effect yet. Any help in this would be much appreciated.
I did email solidoodle support a few days ago and got an auto response but nothing from them as to actually addressing my issue. I am not giving up on em just trying to get the community feel on it so I dont mess up an otherwise perfectly good machine.

2 Reply by elmoret

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Re: x axis stepper temp

You gotta search, man. Covered dozens of times before.

tl;dr: its fine.

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3 Reply by MolecularConcept

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Re: x axis stepper temp

get a voltmeter and check your vref. once its set where its supposed to be it should be a bit cooler. my x stepper was screamin hot once i got my vref sorted out it ran alot cooler

4 Reply by adrian (edited by adrian 2014-03-09 02:28:57)

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Re: x axis stepper temp

MolecularConcept wrote:

get a voltmeter and check your vref. once its set where its supposed to be it should be a bit cooler. my x stepper was screamin hot once i got my vref sorted out it ran alot cooler

Keeping in mind that the factory settings for that stepper are actually overdriven anyway... And reducing the VREF reduces the torque in the motor... 

The stock x-motor is a piddly 1.0 amp motor being driven at 1.1amps (so from the factory, its overdriven...). Steppers will usually start producing heat at idle at >70% full step torque so anything above .7amp will begin to cause a toasty x-axis...  Anyway - If you search the forums - you will find  dozens of references to this - the most common fix is actually simply attaching a cooling fan with the NEMA14 fan holder from thingiverse.

The correct 'fix' would be to attach a properly rated motor for the needs of the x-axis...

Anyway - heres a bunch of threads on the topic:
Search Results...

5 Reply by bill50here

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Re: x axis stepper temp

Thanks to one and all for responding.Guess I need to learn how to search better. Adrian it sure helped giving me the links.Now I can go print cool and be happy after lowering that vref.