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This NEMA17 bipolar stepper motor delivers 4.2kg-cm of torque at a current of 1.7A per phase, putting it firmly in the general-purpose range used across 3D printers, CNC routers and camera platforms. As a bipolar stepper, it moves in precisely repeatable steps in response to pulses from a compatible stepper driver, giving it excellent response to starting, stopping and reversing commands compared to a standard DC motor.
Step accuracy is rated at 3 to 5 percent per step, a typical figure for stepper motors of this class, and being an open-loop, brushless design means it needs no separate feedback encoder for basic positioning tasks, with the driver's step count alone determining position.
An input pulse decides the rotation angle of the motor, and its speed is directly proportional to the frequency of those input pulses, which keeps control circuitry simple: a driver just needs to send the right number of pulses at the right rate. The shaft is machined for attaching a pulley or gear directly, and the motor's low-cost control comes from not needing complex circuitry beyond a standard stepper driver chip.
As with other stepper motors of this size, dimensions and weight can vary by around 2 percent from the nominal figures, poor mounting or excess belt tension can introduce resonance, and it is not intended for extremely high-speed operation, where torque and step accuracy both fall off.
Builders of 3D printers, small CNC machines, camera sliders and other precision-motion projects who need a dependable, general-purpose NEMA17 stepper at a standard 1.8-degree-class torque rating will find this a solid, well-proven choice.
4.2kg-cm at 1.7A per phase.
Bipolar.
No, it runs open-loop with standard step-and-direction control.
A single machined shaft suited to pulleys, gears or couplers.
No, like most stepper motors this size it is not intended for extremely high-speed operation.
| Brand | Generic |
|---|---|
| Stall Torque | 4.2kg-cm |
| Selling unit | PCS |
