103H7823-0440 Sanyo Denki
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The Sanyo Denki 103H7823-0440 is a stepping motor from the StepSyn Stepping Motors series with a basic step angle of 1.8 degrees and a holding torque of 2.1 Newton-meters. It features a 60 mm motor flange size, 85.8 mm motor length, and weighs 1.34 kilograms. This model has a D-shaped single output shaft with unipolar wiring and a rated current of 2 Amps per phase.
Internal Product Review
The 103H7823-0440 is a Sanyo Denki StepSyn stepping motor with a 1.8° basic step angle and 2.1 N·m holding torque. Unipolar wiring and a 2 A/phase rated current support straightforward drive matching and stable low-speed positioning. Connector-type termination and a D-shaped output shaft make this model a strong choice for precise motion duty.
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Product Description:
The 103H7823-0440 is a hybrid stepping motor manufactured by Sanyo Denki and supplied under the StepSyn Stepping Motors series. Designed for open-loop positioning in machine tools, packaging stations, and semiconductor handling equipment, it translates command pulses from a compatible driver into fixed angular increments. The motor can also operate in a closed-loop system when external position feedback is added. Its predictable motion supports feed mechanisms, indexing tables, and light conveyor sections within industrial automation cells. The hybrid rotor design combines permanent-magnet and variable-reluctance operating principles to provide accurate positioning and consistent torque.
Each electrical phase is rated for 2 A per phase, and the copper windings have a resistance of 2.7 ohms per phase. These electrical values affect winding heat and the driver voltage needed for full-step operation. The motor uses a unipolar six-lead wiring arrangement that provides access to the winding center taps for compatible driver configurations. Its phase inductance is 5.6 mH per phase, which limits how quickly the current can rise as operating speed increases. Microstepping controllers commonly use a higher supply voltage with regulated phase current to preserve torque while producing smoother movement. A step angle of 1.8 degrees provides 200 full steps per revolution and delivers predictable angular resolution without requiring an encoder in open-loop operation. At standstill, the rotor produces a holding torque of 2.1 N·m, supporting direct connection to lead screws or timing pulleys that carry moderate loads.
The motor has a square frame measuring 60 mm, allowing it to fit mounting plates designed for this frame class. Its overall body length is 85.8 mm, making it suitable for compact gantries and other assemblies with limited installation depth. A single D-shaped output shaft assists coupling alignment and provides a secure interface for transmitting torque. The assembly weighs 1.34 kg, which limits the added load when the motor is mounted on a moving axis. The laminated rotor has an inertia of 0.84 × 10⁻⁴ kg·m², balancing acceleration response with smooth rotation. Properly configured microstepping can reduce resonance during low-speed movement and help the connected mechanism maintain steady motion through gradual speed changes.
