NEMA 23 Closed Loop Stepper Motor - MKS SERVO57 with Display - Cover Expand

NEMA 23 Closed Loop Stepper Motor - MKS SERVO57 with Display



This ingenious NEMA 23 Closed Loop Stepper Motor is called the MKS SERVO57A, and offers loss-free stepping for high-precision applications.

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This NEMA 23 Closed Loop Stepper Motor with an inbuilt display, aptly named the MKS SERVO57A V1.0, is a brilliant design from MakerBase that takes the best parts of both Stepper Motors as well as Servo Motors, to create a closed loop motor that not only offers the high speed and torque of a stepper, but also the positional accuracy of a servo as it continuously reads its own position after moving, before making on-the-fly adjustments so that the output steps match the input commands.

This clever motor has been cleverly designed with the intent to make a loss-free stepping motor, and uses a closed loop system with a positional sensor for on-the-fly adjustments as it spins. This means that even when the it does miss a step, this motor can easily spot that small mistake and rectify it accordingly before it goes too far. And because of this functionality, the MKS SERVO57A can greatly increase print speeds up to 200m/s on some 3D Printers – and that's just one example of how this motor can be used for high-precision CNC work.

With such fantastic functionality, loss-free stepping capabilities, incredibly high positional resolution and the ability to be integrated onto almost any motherboard with interchangeable Stepper Drivers, we feel that anyone who loves 3D Printing will be eager to give this new kind of stepper motor a try.

Please Note: If you love the idea of this closed loop stepper motor, but are looking for motors with smaller sizes and lower power, then be sure to take a look at our NEMA 17 MKS SERVO42A With Display, as well as our MKS SERVO42A Without Display, which may cater to your needs better than this larger stepper.

Additional Note: The included MKS SV_EXT Adapter board is V1.1, which is perfectly compatible with the SKR Series Motherboards due to the included voltage converter featured on the underside.


MKS SERVO57A NEMA 23 Closed Loop Stepper Motor  -  Electrical Specifications:

  • Manufacturer Part Number


  • Motor Type

– Bipolar Stepper

  • Step Angle

– 22.5° (Default) / 11.25° / 5.625° / 2.815° / 1.40625°

  • Step Precision

– >0.1125°

  • Rated Current

– ±2A

  • Closed Loop Feedback Frequency

– 6kHz


MKS SERVO57A NEMA 23 Closed Loop Stepper Motor  -  Physical Specifications:

  • Frame Size

– 56.4 x 56.4mm                                                     

  • Body Length

– ±80mm

  • Shaft Diameter

– 6.35mm

  • Shaft Length

– 21mm

  • Included Cables

– 1 x 6Pin Stepper Cable

  • Included Driver Board

– 1 x A4954 Stepper Driver Module           

  • Included Display Module

– 1 x 0.96inch OLED Display (In-Built into Board)

  • Dimensions (Including Shaft)

– 57 x 57 x 97mm

  • Weight

– 1.2kg


Typical Applications for the MKS SERVO57A NEMA 23 Closed Loop Stepper Motor:

The NEMA 23 MKS SERVO57A Closed Loop Stepper Motor is a brilliant motor that is best suited to applications requiring perfect precision with high rotational and holding torque. This makes it perfect for uses in 3D Printing, CNC machinery, as well as camera and video work, in which your accuracy can define the end result in a big way. And just to make your life as a Maker as easy as possible, this stepper motor includes a specialised A4954 driver adapter, an onboard Micro-USB port for configuring the motor via computer, as well as a port with onboard buttons that accommodate onboard settings adjustments via an external 0.96inch display module.

These factors all make this one of the most advanced steppers that we’ve ever stocked, and we can’t wait to hear about your thoughts after trying this exciting new tech’!


Additional Resources:

  • Check out this Fantastic SERVO42A Video from RuiRaptor, who explores the features of the SERVO42A and shows off some of the functionality with a great explanation on the good and bad factors that it offers. And while we know this is a different model being reviewed in the video, it is very similar to this SERVO57A


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NEMA 23 Closed Loop Stepper Motor - MKS SERVO57 with Display

NEMA 23 Closed Loop Stepper Motor - MKS SERVO57 with Display