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Step Angle(°)
Holding Torque (Ncm)
Holding Torque (oz.in)
Rated Current (A)
Phase Resistance(ohm)
Shaft Type
Single Shaft/Dual Shaft
Shaft Diameter(mm)
No. of Lead

Nema 17 Stepper Motor

NEMA 17 stepper motors have a standard faceplate size of 1.7 x 1.7 inches (approximately 42 x 42 mm). They are heavier and larger than a NEMA 14, but their size is what ensures more room for higher torque. This size is one of popular stepper motor sizes becasue of its balance between torque output and form factor. NEMA 17 stepper motor is a brushless DC electric motor that divides a full rotation down into equal steps. It is suitable for applications where precise movement is required.

The step angle for NEMA 17 motors is typically 1.8 degrees, but stepper motor with a step angle of 0.9° is more precise than the typical 1.8° stepper motor. NEMA 17 motors typically offer a holding torque between 20 to 80 oz-in (0.14 to 0.56 Nm). Holding torque is the maximum torque that the motor can produce while stationary, which determines how much force it can exert without losing steps or stalling. NEMA 17 motors are also available in both bipolar and unipolar configurations. Bipolar motors have four wires (two phase), while unipolar motors have six wires (three phase). Bipolar motors are more commonly used, as they typically offer higher torque output and better performance.

NEMA 17 stepper motors are widely used in a variety of applications that require precise control over the movement of a rotating shaft. Their compact size, affordability, and versatility make them a popular choice for hobbyists and professionals. They are commonly used in various applications, including 3D printers, CNC milling machines, small robotics, gaming machines, fax machines and Textile machines.