1.8 degrees, meaning it takes 200 steps to complete a full 360° rotation.
Contrary to popular belief, this specific model (and its close sibling, the 26V09) is typically rated at 0.84A per phase . bj42d15 26v10 stepper motor datasheet
| Symptom | Datasheet Check | Solution | | :--- | :--- | :--- | | Motor gets hot (70°C+) | Rated Current = 1.0A | Measure driver current. Reduce Vref until current is 1.0A peak. | | Low torque / skipped steps | Holding Torque = 0.22 N·m | Verify you are using microstepping (1/16 or 1/8). Increase supply voltage to 24V. | | Motor won't turn | Phase Resistance = 2.6Ω | Check continuity. If > 10Ω, winding is burned open. Replace motor. | | Noisy, growling sound | Inductance ~ 4mH | Lower the driver decay mode (set to mixed decay). | Reduce Vref until current is 1
Note: Users often assume 1.0A or 1.5A based on size, but manufacturer specifications for the BJ42D15-26Vxx typically cite 0.84A. Approximately 2.86 kg·cm (0.28 N·m). | | Motor won't turn | Phase Resistance = 2
Using the datasheet as a diagnostic tool.