Product Description:

The 103F5505-7041 stepping motor from Sanyo Denki belongs to the StepSyn Stepping Motors series. This hybrid unit translates digital step pulses into precise shaft rotation, allowing automated equipment to index fixtures, adjust optical stages, or meter fluid volume without closed-loop sensors. When used inside compact machines, it provides dependable positioning while keeping wiring and mounting simple. Its pulse-driven operation supports repeatable incremental movement in applications that require accurate control of position and speed.

The motor provides a holding torque of 0.13 N·m, which is the static load the shaft can resist when rated current is applied while motion is locked. Producing that torque requires a winding excitation of 0.75 A per phase, so the drive electronics must regulate current rather than voltage. Each full step moves the rotor by 0.72°, and microstepping can provide finer movement when supported by the drive. Fast response to incremental commands is aided by a rotor inertia of 0.03 × 10⁻⁴ kg·m², limiting the energy that must be overcome during acceleration. The front face has a NEMA 17 equivalent frame with a square dimension of 42 mm, making it compatible with widely available brackets. Power reaches the windings through AWG 26 leads that extend at least 300 mm for convenient connection.

Mounting holes tapped to M3 × 0.5 secure the housing, while the aluminum body weighs 0.23 kg, helping small linear stages avoid unnecessary mass. The ground steel shaft has a diameter of 5 mm and tolerates a radial load of 35 N without premature bearing wear. It also supports a thrust load of 10 N along the shaft axis. The body is 34 mm long, providing a compact profile for equipment with limited installation space. A 31 mm mounting-hole pitch accommodates many small motion platforms. The 22 mm pilot diameter provides concentric alignment between the motor and the mounting surface.