*The "23" in the part number often suggests a frame size related to 23-frame (approx 60mm or 90mm sq flange), which usually aligns with the 200W to 400W power range.
| Manufacturer | Part Number | Notes | | :--- | :--- | :--- | | Moons' | MS23HS5P4100 | Slightly lower inductance | | Nippon Pulse | S21H5PM-L | Higher torque (3.2 N·m) | | OMC Stepper Online | 23HS45-5004S | 5.0A version | | Leadshine | 23HS45-5004 | Direct cross | 23km-c051-09v datasheet
| Parameter | Value | | :--- | :--- | | Frame Size | 56.4 mm x 56.4 mm | | Motor Body Length | 76 mm (excluding shaft) | | Shaft Diameter | 6.35 mm (0.25 in) | | Shaft Length | 21 mm | | Shaft Type | Single-ended, with flat | | Mounting Holes | 4 x M4 through-holes, 47.14 mm square pitch | | Concentricity | 0.075 mm max | | Radial Play | 0.02 mm max (at 5N load) | | Axial Play | 0.08 mm max (at 10N load) | *The "23" in the part number often suggests