Stepper motor upgrade

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Stepper motor upgrade

I have a Prusa i3 and I’m going through a reconstruction phase. I completely changed the design and now fully reconstructed I ran across a problem with the heat bed attached to the z-axis this configuration seem to have damaged the stepper motors. Does anyone know of a stepper motor that will be powerful enough to handle the strain and drive the heat bed and carriage during prints? The weight of the carriage is approximately 3-5lbs. and I was using the NEMA 17 motor that came stock with the Prusa i3. Below is an image of my current setup.

Any help or Ideas would be great. Thanks Makers!

Brien,

 

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