If you have a motor in hand but no paperwork, "verified" means nothing unless you test it. Here is how to verify the datasheet claims in your workshop.

| Code Segment | Meaning | Implication | | :--- | :--- | :--- | | | Manufacturer Series (Typically a Chinese NEMA 17 derivative, verified with factory tolerance) | Standardized frame, but with custom winding. | | 42 | Frame Size: 42mm x 42mm (NEMA 17 standard) | Compatible with standard NEMA 17 mounting patterns. | | D15 | Stack Length / Rotor Length: 15mm stator stack | Short stack – prioritizes high speed over low-speed torque. | | 26V10 | Rated Voltage: 26V DC / Current: 1.0 Ampere per phase (bipolar) | Low-current, high-voltage design – ideal for microstepping drivers. |