103H7126-0140 Sanyo Denki
Wake Industrial LLC is not an authorized distributor of this product.
The Sanyo Denki 103H7126-0140 is a stepping motor from the StepSyn Stepping Motors series with a basic step angle of 1.8 degrees and a holding torque of 1.27 Newton meters. This motor has a flange size of 56 mm square, a shaft diameter of 6.35 mm, and a motor length of 75.8 mm. It is unipolar with 2 phases, rated at 1 ampere per phase, and weighs 0.98 kilograms.
Internal Product Review
The 103H7126-0140 is a Sanyo Denki StepSyn stepping motor with a 1.8° basic step angle and 2-phase construction. Rated for 1 A/phase and delivering 1.27 N·m holding torque, the motor offers stable low-speed positioning and dependable load retention. Unipolar winding and 19 mH/phase inductance support straightforward drive matching, making the motor a strong choice for precise motion control.
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Product Description:
The 103H7126-0140 is a two-phase hybrid stepping motor manufactured by Sanyo Denki for the StepSyn Stepping Motors series. The motor receives discrete step and direction signals from a microstep drive and converts them into accurate incremental rotation. This operating method allows slides, dispensers, and small conveyors to be positioned without closed-loop feedback. Its hybrid design combines permanent-magnet and variable-reluctance principles to provide repeatable shaft movement under changing command rates.
With each command pulse, the rotor advances by a basic step angle of 1.8°, balancing speed capability with positioning resolution for common indexing tasks. When the windings are energized, the motor can resist an external load with up to 1.27 N·m of holding torque, supporting small linear actuators without mechanical brakes. The coil sets operate at 1 A per phase, and the unipolar winding arrangement simplifies current control through center-tap excitation. Electrical response is influenced by a per-phase inductance of 19 mH and a per-phase resistance of 8.6 Ω. These electrical values establish the winding time constant that affects torque as the command pulse rate increases. The two motor phases are connected through an AWG 22 lead bundle that is suitable for connection to standard stepper drives.
The square mounting face measures 56 mm on each side and matches common NEMA 23 mounting patterns. The motor body has an overall length of 75.8 mm, providing a compact profile for installation in constrained machinery. The output shaft has a diameter of 6.35 mm, while the 38.1 mm pilot provides concentric alignment with compatible mounting surfaces and couplings. A rotor inertia of 0.36 × 10⁻⁴ kg·m² supports rapid acceleration without requiring excessive drive current. Installation uses four holes with a diameter of 4.5 mm arranged on a 47.14 mm pitch, and the motor has a mass of 0.98 kg. Detent torque helps resist incidental shaft movement when winding power is removed. The leads exit axially, allowing the cable bundle to be routed directly away from the rear of the motor housing.
