NEMA23 PR57HS76-2804 18.9kg-cm Stepper Motor-Round Type Shaft


In stock

SKU: 1736869
  1. Model: PR57HS76-2804
  2. Motor Type: NEEMA 23
  3. Step Angle: 1.8
  4. Shaft Type: Round


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Brand: Generic
Category: Nema 23 Stepper Motors, 3D Printer Stepper Motors

The stepper motors move in precisely repeatable steps, hence they are the motors of choice for the machines requiring precise position control. The Nema17 1.89N-m Stepper motor can provide 1.89N-m of torque at 1.68A current per phase. The motor’s position can be commanded to move or hold in one position with the help of Stepper Motor Drivers. The Nema17 1.89N-m Stepper motor provides excellent response to starting, stopping, and reversing pulses from the stepper motor driver. They are very useful in various applications, especially those that demand low speed with high precision. Many machines such as 3D Printers, CNC routers and Mills, Camera Platforms, XYZ Plotters, etc. It is a brushless DC motor, so the life of this motor is dependent upon the life of the bearings. The position control is achieved by a simple Open Loop control mechanism so it doesn’t require complex electronic control circuitry. The motor’s shaft has been machined for good grip with a pulley, drive gear, etc. especially to avoid stall or slip. Tags, 57HS76-2804, NEMA23 18.9 kg-cm, NEMA23 20kg, NEMA23 20kg, NEMA Stepper Motor 20Kg, NEMA Motor 20Kg.

Note :

  1. The Nema17 1.89N-m Stepper motor dimensions and weight may have a ±2% error.
  2. Resonances can occur because of improper mounting.
  3. Not easy to operate at extremely high speeds.


  1. The input pulse decides the rotation angle of the motor.
  2. High accuracy of around 3 to 5% a step.
  3. It provides good starting, stopping, and reversing.
  4. Control of this motor is less costly because of the exclusion of complex control circuitry.
  5. The speed is proportional to the frequency of the input pulses.

Package Includes:

1 x NEMA23 PR57HS76-2804 18.9kg-cm Stepper Motor-Round Type Shaft

Item Type:

NEMA 23 Stepper Motor

Shaft Type


Holding Torque Rating:

18.9 kg-cm

Step Angle (Degree)


Model No.


Operating Current (A):


Inductance (mH/Phase)


Resistance (Ω)


No. of Leads


Rotor Inertia (gm-cm2)


Holding Torque (kg-cm)


Load Torque(N-CM)


Detent Torque (kg-cm)


Shaft Diameter (mm)


Shaft Length (mm)


Shipping Weight 1.035 kg
Shipping Dimensions 11 × 11 × 7 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China