103H7852-7021 Sanyo Denki
Wake Industrial LLC is not an authorized distributor of this product.
The Sanyo Denki 103H7852-7021 is a five-phase stepper motor from the StepSyn Stepping Motors series with a holding torque of 0.98 Newton meters and a step angle of 0.72 degrees per step. It features a 60 mm by 60 mm flange size, a double shaft, and has a rated current of 0.75 Amps per phase. This motor has a winding resistance of 3.4 Ohms per phase and weighs 0.78 kilograms.
Internal Product Review
The 103H7852-7021 is a Sanyo Denki StepSyn stepping motor with a 5-phase design and a compact frame. A 0.72° step angle and 0.98 N·m holding torque give this unit precise indexing and dependable load retention. The double-shaft configuration supports flexible mechanical integration, making the motor a strong choice for accurate motion control.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The 103H7852-7021 is a hybrid stepping motor produced by Sanyo Denki for the StepSyn Stepping Motors series. As a motion element in industrial automation, it receives timed phase currents from a driver and advances the rotor in precise angular increments, holding each commanded position without additional feedback. The design combines permanent magnets with toothed laminations so that incremental torque is generated whenever adjacent stator phases are energized. This direct electromechanical conversion allows accurate open-loop positioning on pick-and-place heads, small indexing tables, and laboratory dispensers where repeatability and compact size are important.
Its square frame measures 60 mm × 60 mm, allowing direct attachment to NEMA 23 plates while keeping clearance for cabling. A static pull-in torque of 0.98 N·m helps the motor start a stationary load without losing synchronization. The motor uses a five-phase architecture that lowers torque ripple and promotes smooth incremental motion. With a mechanical increment of 0.72° per step, the motor completes 500 full steps per revolution and supports finer positioning when operated with a compatible microstepping driver. The driver must furnish phase excitation up to 0.75 A per phase, which is compatible with low-voltage supplies used in distributed motion axes.
The assembly weighs 0.78 kg, so moving axes experience limited inertial load during acceleration. A rotor inertia of 0.4 × 10⁻⁴ kg·m² supports rapid start-stop cycles without excessive overshoot when the motor is microstepped at high pulse rates. Because the motor has a double shaft, an encoder or handwheel can be mounted on the rear while the front end is coupled to a belt or lead screw. The phase conductors have an inductance of 7.75 mH per phase and a resistance of 3.4 Ω per phase. These electrical values establish the winding time constant and influence the appropriate chopper frequency within the driver. Matching the driver and supply voltage to the winding characteristics helps control heat rise while maintaining torque across a broad speed range.
