103H7822-0740 Sanyo Denki
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The Sanyo Denki 103H7822-0740 is a stepping motor from the StepSyn Stepping Motors series with a basic step angle of 1.8 degrees and a holding torque of 1.17 newton-meters. It features a 60 mm flange size, 8 mm D-shaped shaft diameter, and is rated for 3 amps per phase. The motor has a length of 53.8 mm and weighs 0.77 kilograms.
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Product Description:
The 103H7822-0740 is a two-phase stepping motor produced by Sanyo Denki as part of the StepSyn Stepping Motors series. It converts pulse commands from a microstep drive into controlled angular movement suitable for indexing tables, small gantries, and pick-and-place actuators in industrial automation. By advancing the rotor one discrete increment for every excitation sequence, the motor provides repeatable positioning without requiring a feedback transducer. This operating principle makes the motor suitable for straightforward open-loop motion stages where the applied load remains within the available torque range.
The motor has a basic step angle of 1.8°, so 200 full steps complete one mechanical revolution. The shaft provides a holding torque of 1.17 N·m, allowing the axis to remain stationary while the windings are energized. Drive electronics must supply a rated current of up to 3 A per phase; this current affects power dissipation and thermal rise during continuous operation. Dynamic response is supported by a rotor inertia of 0.4 × 10^-4 kg·m², which helps limit overshoot during rapid acceleration. Internal phase leads are arranged for unipolar wiring, permitting simpler driver topologies that use center-tapped windings. Proper current regulation is required to maintain predictable torque while preventing excessive winding temperatures during repeated motion cycles.
The motor uses a 60 mm flange, allowing installation in compatible NEMA 24 mounting arrangements. Its overall motor length is 53.8 mm, which supports installation in shallow machine assemblies where axial clearance is limited. The unit weighs 0.77 kg, making it suitable for mounting on moving carriages without adding excessive mass to the axis. Power is transferred through a shaft with an 8 mm diameter and a D-shaped flat, which supports secure coupling while preserving concentric alignment. A 50 mm mounting pitch and 4.5 mm mounting holes accommodate common stepper motor brackets. These mounting dimensions allow the motor to be secured without additional adapter plates when the machine frame uses the corresponding hole pattern.
