What are the pros and cons of stepper motors (think NEMA 17’s) vs large servos?

I’ve not really done DIY robotic stuff before, and was wondering what the differences were between stepper motors and servos.

From what I could tell when I compared NEMA 17’s to various servos on amazon:

NEMA 17 Stepper Motors:

  • more precision
  • heavier
  • less torque (84oz-in max for NEMA 17)
  • not restricted (can do full revolutions all day no problem)
  • faster


  • lighter
  • less precise
  • more torque
  • slower?
  • can’t rotate freely like stepper motors

Is there anything that I’m missing?

submitted by /u/65465489461681
[link] [comments]