103H7521-7028 by Sanyo Denki

The 103H7521-7028 stepper motor is a high-performance device from Sanyo Denki within the renowned StepSyn Stepping Motors series, engineered to meet the rigorous demands of industrial automation. This NEMA 23 motor features a precise Step angle: 0.72° and delivers a robust Holding torque: 2.4 Nm (340 oz-in), making it suitable for applications requiring fine position control and strong output. With a compact frame measuring 57 x 82 mm and a standard Shaft diameter: 8 mm, the 103H7521-7028 balances power density with ease of integration into diverse machine architectures. The motor operates on a Rated current: 4 A per phase and utilizes a Drive type: Bipolar configuration to optimize power delivery and minimize heat generation during continuous operation. Its Phases: 2 winding design ensures smooth torque production and high responsiveness across the entire speed range. The device’s Duty cycle: S1 (continuous) rating underscores its capability for sustained operation in demanding production environments.

Performance characteristics of the 103H7521-7028 stepper motor highlight its precision and reliability under varied operating conditions. An onboard Encoder: Available option provides closed-loop feedback for accurate position verification and speed regulation, enabling advanced motion profiles and error correction. The motor’s Insulation class: Class B (130°C) and robust thermal design support stable performance up to its maximum ambient threshold. Its lead set comprises Lead wires: 6 (multi-colored) for straightforward phase identification and streamlined wiring. Rated to function between Ambient temperature range: -15°C to +40°C, this unit maintains consistent torque delivery with minimal detent and vibration. Additionally, it tolerates Relative humidity: 20% to 95% (no condensation), ensuring dependable operation in environments with fluctuating moisture levels. The combination of a high-resolution Step angle and durable construction maximizes repeatability and minimizes cumulative positional error over long production runs.

Reliability and integration are central to the design philosophy of the 103H7521-7028. Its precision-machined steel shaft and rigid flange facilitate direct coupling to lead screws, gearboxes, and flexible couplings, streamlining mechanical assembly. The motor’s sealed construction and temperature-rated insulation support continuous duty in both cleanroom and factory floor settings. Compatibility with standard NEMA 23 mounting patterns and industry-proven bipolar drive electronics simplifies system design and retrofit projects. In industrial automation, robotics, semiconductor handling, and medical device assembly, the 103H7521-7028 delivers the precision, torque, and uptime necessary for high-throughput, mission-critical applications.