RTELLIGENT Nema 17 Stepper Motor 5PCS, 2 Phase Step Motor Bipolar 1.5A 59.5oz.in(42Ncm) 42x42x38mm 4-Wire 30cm Long Cable for 3D Printer (5, 42A02C-XH2.54)

Of the three one failed without ever being used. I am past the return date and there is no way to contact the seller-

Disfrutando y proximo a desarrollo de un buen proyecto que el respaldo de esta compra.

This motor is well-made but somewhat unusual. It has a very low resistance winding and operates at less than 4V. Given its high torque, the phase current is a bit high at 1.2 A at slower speeds. Most of the steppers I have used have operated on at least 6V at currents of 600mA or less. If you need a high-torque, 200-step motor and you have a source that can supply 1.5 A at 4 or less motor Volts (about 6 Volts input to an H-bridge by the time you deduct the losses from the high- and low-side transistors), this is an excellent value.

I bought these motors to replace the extruder motor in my new Creality Ender 3 Pro 3D Printers. The motors they are shipping with the printers now have a round output shaft that does not stick up above the feed gear on the motor shaft with the feed gear pressed onto the shaft. This makes it very difficult to change the feed gear if you need to, and with no shaft sticking above the gear, you cannot add an extruder knob to manually feed filament into your print head. These new motors have an output shaft with a flat on one side that is 10mm longer than the one on the stock motor that comes on the machines now. I am now able to use my own feed gears AND put an extruder knob onto the shaft. The 5-pack of motors came well packed in a nice box with a foam insert with die-cut openings for the motors. The new motors have the same step size and turn the same direction as the stock motor, so I did not have to make any changes to the printer firmware. Best of all, I got the motors in just 2 days with regular free shipping which was a great surprise! Overall, I am very happy with these new motors for my printers.

I am not sure what else you can say about a standard stepper motor. All three are working great. The packaging and document that came with them was high quality.

This Nema 17 stepper provides plenty of torque and functions well an A4988 stepper driver attached to an Arduino Nano microcontroller.

Nice quality stepper motors. Hold a lot stronger than the original ones on my 3D printer. If you plug these in and they dont work try switching the center two wires green and blue.

RTELLIGENT Stepper motor for Arduino Automatic Fish Feeder - Great Torque - Quick shipping and great products works as expected with Low power but high torque and efficiency.