Product Description:

The 103H7822-0440 is a two-phase hybrid stepper motor produced by Sanyo Denki within the StepSyn Stepping Motors series. The unit converts discrete pulse commands from a microstepping drive into accurate angular motion, making it suitable for positioning slides, indexing tables, and pick-and-place axes in automated equipment. By combining a permanent-magnet rotor with a laminated stator, the motor delivers incremental rotation without requiring an encoder. Machine controllers can hold or advance load shafts in exact increments according to commands from the drive.

Each full step advances the shaft by 1.8°, providing 200 discrete positions per revolution for straightforward pulse-per-step programming. The detent and electromagnetic design supplies 1.17 N·m of holding torque, so the motor resists back-driving when the control signal is static. The coil windings draw 2 A per phase, allowing microstepping drives with conventional 24–48 V DC buses to use the full torque curve without saturation. The stator inductance is 3.6 mH per phase, which establishes the electrical time constant and influences achievable slew rates at higher pulse frequencies. Copper resistance of 1.8 Ω per phase determines steady-state heat generation and provides a baseline for thermal calculations in compact cabinets.

The frame has a square 60 mm flange and mates with gearheads or mounting surfaces through a Ø36 mm pilot, ensuring concentric alignment. The overall stack length is 53.8 mm, and the rotor inertia is 0.4 × 10⁻⁴ kg·m². These characteristics combine with the 0.77 kg mass to provide a moderate load-acceleration profile. Power is transferred through a Ø8 mm D-shaped shaft that simplifies coupling and prevents slippage during start-stop operation. The motor has a single-ended shaft and a unipolar winding topology. A keyed connector is used instead of flying leads, supporting quick installation while reducing cable connection errors on assembly lines.