103H7521-7028
by Sanyo Denki
The 103H7521-7028 from Sanyo Denki is a precision stepper motor in the StepSyn Stepping Motors series designed for industrial automation and motion control. This NEMA 23 motor delivers a high-resolution step angle of 0.72° and a robust holding torque of 2.4 Nm, ensuring accurate positioning and reliable performance. With a rated current of 4 A and a 2-phase bipolar drive type, it provides consistent torque output under demanding conditions. The 8 mm shaft diameter and compact 57 × 82 mm frame dimensions facilitate straightforward integration into existing systems.
Engineered for durability and continuous operation, this motor supports an ambient temperature range of -15 °C to +40 °C and relative humidity from 20% to 95% (no condensation). Its Class B (130 °C) insulation ensures thermal resilience, while the S1 (continuous) duty cycle rating guarantees uninterrupted service. The inclusion of 6 multi-colored lead wires simplifies wiring and diagnostics. An optional encoder provides real-time position feedback, enhancing control accuracy and system stability. The shaft’s silver finish promotes thermal dissipation, and the NEMA 23 frame offers a standardized mounting interface.
Compatibility and efficiency are hallmarks of this model, supported by its bipolar drive configuration and encoder availability for closed-loop operation. Its sturdy construction and Class B insulation contribute to long-term durability in harsh environments. The motor’s specifications align with common industrial standards, enabling seamless integration with controllers and drivers. By delivering precise microstepping capability and continuous torque output, the 103H7521-7028 maximizes motion control efficiency, reduces cycle times, and enhances overall automation productivity in manufacturing and robotics applications.
