103H7121-0410
by Sanyo Denki
The Sanyo Denki 103H7121-0410 is a precision stepping motor from the StepSyn Stepping Motors series, designed for demanding industrial automation tasks. Built by Sanyo Denki, this motor features a 24 VDC (constant current) operating voltage and a 2 A/phase current rating, ensuring stable torque delivery. With a winding inductance of 3.8 mH/phase and a rotor inertia of 0.057 × 10^-4 kg·m², it delivers precise motion control for indexers, pick-and-place systems, and robotic axes.
This motor’s technical prowess includes a phase resistance of 0.6 Ω/phase and an insulation resistance of ≥ 100 MΩ (DC 500 V), providing electrical robustness. It maintains a static angle error within ± 0.054° for high-precision positioning. Vibration performance is exceptional: a 1.52 mm amplitude at 10–70 Hz and 147 m/s² acceleration at 70–500 Hz, plus an impact resistance of 490 m/s² (11 ms). These specifications reduce resonance and ensure consistent step accuracy even under shock and vibration.
Engineered for reliability, the 103H7121-0410 offers an IP40 protection grade to guard against light dust ingress and operates across an ambient temperature range of –10 °C to +50 °C. Mechanical tolerances include an axial play of ≤ 0.075 mm (10 N load) and radial play of ≤ 0.025 mm (5 N load), ensuring shaft stability. Its compact 41.8 mm length eases integration into tight assemblies. By combining durability, low electrical noise, and precise control, this stepping motor enhances throughput, reduces maintenance, and boosts efficiency in industrial automation applications.
