Why do 3D printers use stepper motors as opposed to servo motors?

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Why do 3D printers use stepper motors as opposed to servo motors?

Simplicity of control.

It is possible to precisely control the position of a stepper motor simply by counting the number of step pulses that you have sent to the stepper driver. The only position feedback you need is a limit switch to tell you when you have reached your home position. A 3D printer will run every motor into the home position at the start of a print, and from then on will know the position of the head by remembering how many steps were sent to each of the stepper motors. As long as the stepper doesn’t skip a step, which it will not if the hardware is working properly, then the position of the print head will be precisely known.

A servomotor, on the other hand, needs a constant feedback of its position at all times in order to control where the print head is precisely. This tends to cost more and involve more complicated hardware. There have been a few printers made using DC servo motors instead of steppers, but they tend to either cost a lot more than printers with stepper motors, or if built very cheaply they don’t work nearly as well.

Cloudray Stepper Motor Series has set the standard for quality, reliability, and durability in stepping motors. The precision of our Torque Power motors is matched only by the dependability of their performance. All Torque Power motors are bi-directional and totally enclosed with permanently lubricated ball bearings for long-lasting, smooth operation.
Cloudray stepper motor series are widely used in medical instruments, robotics, 3D printers, extruders, laser cutters, engraving machine, textile equipment, packaging machinery, CNC machines, etc. nema 23 bipolar stepper motor for 3D printer and CNC
 
High Torque, High Precision and Long life is Cloudray's core advantages
Low vibration,Low heating, No loss of step
Fast Response,Better Acceleration Performance
Thanks to a robust design they can be selected for the harshest environments. Precise, open-loop, speed and position control can be achieved with the application of full step, half step, or microstepping electronics.
nema 23 bipolar stepper motor for 3D printer and CNC
Higher Resolution,Avoidance of Resonance Regions
Stepping angle is adjustable( rang in 18°±5%), 0.9 °stepper motor's stepping angle is smaller, fineness is higher and positioning is more accurate.Avoiding vibration,runs more smoothly and gets lower noise.
nema 23 bipolar stepper motor for 3D printer and CNC
Sturdy structure, extremely long life
High quality materials including bearings and shaft made in Japan
Robust assembly, high speed range, and exceptional performance in even the harshest environments make Cloudray Stepper Motors the perfect solution for demanding positioning applications.
nema 23 bipolar stepper motor for 3D printer and CNC
Short length and light weight allow them to be used in highly integrated systems
nema 23 bipolar stepper motor for 3D printer and CNCnema 23 bipolar stepper motor for 3D printer and CNCnema 23 bipolar stepper motor for 3D printer and CNC
Cloudray stepper motor factory video
Stepper motor application
Cloudray stepper motor and Stepping Motor Driver are widely used in engraving machine, cutting plotter, textile machine, 3D printer, medical devices,stage lighting equipment, robot, CNC machine, music fountain and other industrial automatic equipment.
nema 23 bipolar stepper motor for 3D printer and CNC
nema 23 bipolar stepper motor for 3D printer and CNC
nema 23 bipolar stepper motor for 3D printer and CNC

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