103H7126-5040 Sanyo Denki
Wake Industrial LLC is not an authorized distributor of this product.
The Sanyo Denki 103H7126-5040 is part of the StepSyn Stepping Motors series and features a flange size of 56 mm square with a step angle of 1.8 degrees per step. This bipolar motor has a holding torque of 1.27 Newton meters and a rated current of 2 Amps per phase. It weighs 0.98 kilograms and has a shaft diameter of 6.35 mm.
Internal Product Review
The 103H7126-5040 is a Sanyo Denki StepSyn stepping motor with 1.27 N·m holding torque and a 1.8° step angle. Bipolar winding and a 2 A/phase rating support stable drive matching and predictable motion control in indexing applications. A strong choice for equipment requiring precise stepping performance and dependable torque retention.
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Product Description:
The 103H7126-5040 stepping motor is produced by Sanyo Denki within the StepSyn Stepping Motors series. It is designed for open-loop positioning tasks in industrial automation equipment. This hybrid unit converts discrete pulse commands from a microstep driver into controlled angular displacement, making it a practical choice for indexers, label applicators, and small Cartesian stages. Its pulse-driven operation allows repeatable incremental movement without requiring a position feedback device. When paired with a compatible driver, the motor can provide controlled acceleration and deceleration for machinery that handles moderate mechanical loads.
It uses a 56 mm square flange, so it mounts directly to compact gearheads or brackets without adapters. Each electrical step advances the shaft by 1.8° per step, providing 200 full steps per revolution and finer resolution when microstepping is applied. The motor delivers a static holding torque of 1.27 N·m, allowing it to secure modest loads without an external brake. The coils are rated at 2 A per phase, so standard low-voltage chopper drives can energize the windings without exceeding thermal limits. Copper resistance is 1.05 Ω per phase, which affects resistive power loss at the rated current and influences driver voltage requirements. The laminated stack is 75.8 mm long, and the 38.1 mm pilot centers the motor body during installation. Mounting holes with a diameter of 4.5 mm are arranged on a 47.14 mm pitch and accept suitable socket screws. A bipolar wiring arrangement is supplied through lead wires that are at least 305 mm long, allowing them to reach terminal blocks inside a cabinet.
Phase inductance is 4.5 mH per phase, which moderates current ripple and affects the switching frequency used by the driver. The rotor has an inertia of 0.36 × 10⁻⁴ kg·m², balancing rapid acceleration with positional stability in belt-driven axes. The unit has a mass of 0.98 kg, making it suitable for installations where the motor moves with the driven assembly. Mechanical output is delivered through a stepped shaft with a diameter of 6.35 mm. The shaft projects 20.6 mm beyond the front face, providing sufficient engagement length for a compatible coupling. The lead wires include strain relief to protect their connections when routed through moving cable harnesses.
