MakerBase MKS Closed Loop Nema 17 SERVO42 Motor with Adapter for 3D Printers (Without Display) V1.1


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Approx Restocking Date: 25 to 30 Days
SKU: 1121357
  1. Model: MKS SERVO42A V1.1
  2. Input voltage: 12V-24V
  3. Peak output current: +-2A
  4. Closed-loop feedback frequency: 6kHz
  5. Precision: under 0.1125 degree
  6. Micro stepping: 16/32/64/128/256 (Default16)


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Brand: Makerbase
Category: Nema 17 Stepper Motors, 3D Printer Stepper Motors
Tags: 3D printer, Stepper Motor

This conversion kit 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 holding torque of a stepper but also the near-perfect 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.

It simply converts a NEMA 17 (42 x 42mm) stepper motor into a strong and accurate servo that can handle relatively heavy objects such as DSLR cameras. This conversion module has been designed with the intent to make a loss-free stepper motor and uses a closed-loop system with a positional sensor for on-the-fly adjustments as it spins. This means that even when it does miss a step, this motor can easily spot that small mistake and rectify it accordingly before it goes too far.

Due to this functionality, the MKS SERVO42A can greatly increase print speeds up to 200m/s on some 3D Printers without having to modify any firmware, commit to any major hardware changes or jump through any other loops just to get it working.

This MakerBase Closed Loop Nema 17 SERVO42 Motor with Adapter for 3D Printers (Without Display) V1.1 module can be used on any linear movement mechanism found in CNC router machines and 3D printers as well as slide tables, etc.


1. All parts are installed and debugged well, easily operate.
2. High-speed printing does not lose step,
3. Easy to install and simple structure.
4. Available to configure through the serial port debugging assistant and multiple commands, and it can feedback the data.

Package Includes:

1 x MakerBase MKS Closed Loop Nema 17 SERVO42 Motor with Adapter for 3D Printers (Without Display) V1.1

Item Type:

NEMA 17 Stepper Motor

Shaft Type

D type

Model No.


Input Voltage (V)


Shaft Diameter (mm)


Position Cycle Frequency


PID Adjustment Method

sPID, pPID, vPID (default set to sPID)

Processor Speed


USB Interface (Y/N)


Serial Port (Y/N)


OLED Display Interface

Yes, 400KHz I2C 4-Pin Header

Parameter Adjustment Method

Reset the module after re-adjustment

Current Adjustment Range

0-3.3A (default set to 300mA)

Step Angle (Degree)

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

Step Precision


Shipping Weight 0.43 kg
Shipping Dimensions 15 × 10 × 6 cm

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Questions and answers of the customers

    Can we use this for robotic leg
  1. 0 votes
    Q Can we use this for robotic leg answer now
    Asked by rahulparmar611 on October 4, 2023 7:33 am

    No, this motor is used in linear movement mecha... Read more

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Country Of Origin: China