The 57 stepper motor is not a NEMA 24 stepper motor.
The 57 stepper motor is actually a NEMA 23 motor.
The so-called 57 stepper motor is actually the NEMA 23 motor, these two seemingly different names, but actually refer to the same variety.
57mm nema 23 stepper motor manufacturers in China
Users who are familiar with stepper motors should know that although it is a specific variety of motor, it also has a number of different types of varieties, not to mention the specific model, which is very rich.
For example, 57 stepper motor, is very commonly used, many people have heard of it.
Among the many stepper motors, the production and sales of 57 varieties of motors are relatively large, second only to 42 stepper motors, which is a very commonly used motor size.
Because the cost performance is relatively high, it is recommended for users to choose.
The reason why the 57 stepper motor is taught is that the flange frame size of the hybrid stepper motor is 56.4mm, because this size is close to 57mm, so it is customary in the industry to call it 57 motor.
Most of the fuselage of this motor is square, and a few of the fuselage is round, and different body shapes have different characteristics and are suitable for different purposes.
The 57-stepper motor with a round body has a small moment of inertia, which is suitable for fast start-stop conditions, which is common in the printer industry. In the face of the improvement of manufacturing technology, 57 motors with round bodies have rarely been manufactured.
Therefore, the 57 motors that you can see now are basically square in the structure of the fuselage.
As for NEMA23, why it has two completely different names is because NEMA23 is the American standard size, in fact, both standards are named according to size.
The 23 in NEMA 23 also refers to the flange frame size of the hybrid stepper motor, but it is measured in inches, and the inches 23 is converted to mm is almost 56.4mm, so NEMA 23 is a 57 stepper motor.
The NEMA 24 stepper motor is a series of 60x60mm (2.36x2.36in) sizes with holding torque up to 3.2Nm (453oz-in) flange 60mmx60mm (also known as NEMA 24), slightly larger than the most common NEMA 23.