103H8221-0941 Sanyo Denki
Wake Industrial LLC is not an authorized distributor of this product.
The Sanyo Denki 103H8221-0941 is part of the StepSyn Stepping Motors series and features a body length of 62 millimeters with a flange size of 82.55 millimeters square. This unipolar motor has a holding torque of 2.15 Newton-meters and operates with a rated current of 4 Amps per phase. It has a shaft diameter of 9.5 millimeters and a step angle of 1.8 degrees per step.
Internal Product Review
The 103H8221-0941 is a Sanyo Denki StepSyn stepping motor with 2-phase construction and a unipolar winding type. Steady positioning performance comes from a 1.8° step angle and 2.15 N·m holding torque. This motor stands out as a dependable choice for motion systems that need controlled indexing and strong torque retention.
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Product Description:
The 103H8221-0941 is a stepping motor produced by Sanyo Denki within the StepSyn Stepping Motors series. In positioning tables, packaging equipment, and pick-and-place stations, it converts digital pulse trains from a drive into controlled rotary motion that does not require feedback devices. The motor advances by a fixed increment each time the controller energizes its windings, so predictable displacement can be achieved without closed-loop sensors.
This model provides a holding torque of 2.15 N·m, allowing it to keep a driven axis stationary once the phases are energized. Each phase may be supplied with up to 4 A per phase. The copper paths have a resistance of 0.62 Ω per phase, which determines the voltage needed for the rated current and the resistive losses that must be removed through conduction. The winding inductance is 1.8 mH per phase, so current can rise quickly when the drive issues high-frequency step commands. The angular resolution is 1.8° per step, providing 200 discrete positions per revolution and simplifying ratio calculations in indexers. The motor uses two electrical phases in a unipolar arrangement, and the rotor inertia of 1.45 × 10⁻⁴ kg·m² balances rapid acceleration with load stability.
The motor has an overall body length of 62 mm, while its mounting flange is an 82.55 mm square. These measurements suit applications with limited axial space but a generous mounting face. The stator has an outside diameter of 86 mm, and a 73.025 mm pilot bore centers the housing during installation. A 9.5 mm shaft extends 27.5 mm beyond the front face and transmits torque directly to gears or pulleys. The motor has a total mass of 1.5 kg and uses AWG 22 lead wires that accommodate the required phase current without an oversized cable bundle.
