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Last week, my X-axis stepper motor died. It was a 42SHD0217-24B model. I ordered the same online, but the vendor made a "mistake" and sent me the 17HS3401S model.

I know these motors use a different voltage, so I adjusted the screw on the stepper driver and managed to get a smooth rotation with the new model. I know that these 2 motors have a rotation of 1.8° per step.

My questions are the following:

- Since they have the same rotation angle per step, I shouldn't have to calibrate the new model, right? (I'll use the original wheel)
- Did the vendor send me a motor with inferior performances?
- Will my performances degrade if I use the new motor? (Lecture on motors appreciated). By that I mean: will my top moving speed be affected? Will the motor miss more steps at high speed?

can you just try it? print a benchy or something and see how it goes. – dandavis – 2019-04-19T18:37:21.077

1Yes I will obivously, but I'm looking for a more theoretical explanation, since I want to understand... – JPFrancoia – 2019-04-19T18:41:54.540

1Not voltage, but amperage (current). Due to the difference in max current, you need to lower Vref of the stepper driver. – 0scar – 2019-04-19T21:43:02.533