Jump to content
Ultimaker Community of 3D Printing Experts
thetastysnail

I bought the wrong stepper motor, will it still work? (UM2)

Recommended Posts

Hi, hope someone can help with hopefully a simple question.

On my UM2 the y axis stepper motor became notchy and stiff, so i bought a new one to replace it.

to cut a long story short, i managed to get the wrong one.

I bought a sy42sth47-1684a instead of a sy42sth38-1684a the main difference is that it's longer by a few mm so i cant fit the shroud back on. the key specs of degrees per step seem ok, and it's more powerful. so can i do any harm in fitting this as a short term measure. i intend to get the correct motor asap, but i have a big job to finish right now

cheers

Rob

Share this post


Link to post
Share on other sites

I can answer my own question now.

the answer is sort of.

the motor will operate and you can print stuff. I had to leave the cover off, which leads me to think it may get hotter than normal, but the temps seem ok compared to the x axis motor.

also this motor only just clears the build platform.

but the biggest problem what that i kept getting axis slip. It wasn't slipping on the pulleys, i tightened them up a lot. but it would become misaligned on the y axis, usually later on in the print.

I tried lowering the current in the options and this seems to have cured it. So i conclude the bigger motor was causing the stepper driver to overheat and cut out periodically. I will be putting a heatsink on it later and putting the current back up, so we'll see how this helps.

I'm still gonna get the correct motor for it as soon as poss.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Our picks

    • Taking Advantage of DfAM
      This is a statement that’s often made about AM/3DP. I'll focus on the way DfAM can take advantage of some of the unique capabilities that AM and 3DP have to offer. I personally think that the use of AM/3DP for light-weighting is one of it’s most exciting possibilities and one that could play a key part in the sustainability of design and manufacturing in the future.
        • Like
      • 3 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!