103-714-0150 Sanyo Denki
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The Sanyo Denki 103-714-0150 is a stepping motor from the StepSyn Stepping Motors series with a 1.8 degree basic step angle and a flange width of 56.4 mm. It provides a bipolar holding torque of 109 Ncm and operates at a bipolar parallel current of 2.55 A. The motor has a mass of 0.95 kg and a shaft diameter of 6.35 mm.
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Product Description:
The 103-714-0150 is a two-phase hybrid stepping motor produced by Sanyo Denki within the StepSyn Stepping Motors series. The unit converts digital pulse trains from indexers into incremental rotary motion for conveyors, pick-and-place heads, and small positioning tables used in industrial automation. By providing open-loop angular control without encoders, it simplifies drive electronics where moderate speed and repeatable positioning are required.
Each full step advances the shaft by 1.8° ±0.09°, establishing the basic resolution of the axis. When energized in a bipolar configuration, it develops a holding torque of 109 Ncm, ensuring loads stay fixed at standstill. The recommended bipolar parallel drive current is 2.55 A, allowing the coils to reach rated flux without excessive heating. With a winding resistance of 2.6 Ω, the driver can calculate voltage drop to select an adequate supply. Its induced voltage constant is 36 V/krpm, so back EMF rises linearly with speed and must be considered when sizing the supply. A phase inductance of 4.9 mH limits current slew during microstepping. Dynamic response is shaped by a rotor inertia of 210 × 10⁻⁷ kg·m², balancing acceleration capability and vibration suppression.
Mechanically, the motor has a square NEMA 23-style face with a flange width of 56.4 mm and a mounting pitch of 47.14 mm that matches common stepper brackets. A pilot diameter of 38.1 mm centers the housing, while the output shaft measures 6.35 mm in diameter and extends 20.6 mm beyond the front face for coupler engagement. The overall body length is 76.2 mm, and the assembly weighs 0.95 kg, making it suitable for equipment with limited space. For six-lead operation, each phase may be driven at a unipolar current of 1.8 A, producing a holding torque of 88 Ncm when detent stability is needed with lower copper losses than bipolar operation.
