103H5332-0340 Sanyo Denki
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The Sanyo Denki 103H5332-0340 is a stepping motor from the StepSyn Stepping Motors series with a basic step angle of 1.2 degrees and a flange size of 42 mm. This motor supports a rated current of 3 amperes per phase, features a single circular output shaft, and has a holding torque of 0.196 Newton meters. It weighs 0.3 kilograms and offers a protection rating of IP40.
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Product Description:
The 103H5332-0340 is a hybrid stepping motor manufactured by Sanyo Denki for the StepSyn Stepping Motors series. Designed for open-loop or microstepping control, the motor advances a fixed angle per input pulse, providing accurate incremental positioning for pick-and-place arms, small conveyors, and inspection fixtures in industrial automation. The three-phase winding set is energized sequentially to produce controlled shaft rotation without requiring position feedback.
The motor’s fundamental increment is a 1.2° basic step, so 300 full-step pulses rotate the shaft through one mechanical revolution. Each phase draws a steady 3 A per phase under rated conditions; this current establishes the flux required for the stator teeth to lock the rotor and determines the required capacity of the associated drive transistors. With a static holding capability of 0.196 N·m, the rotor resists back-driving when the windings are energized and stationary. Acceleration from rest is limited by a 2,000-pulse-per-second maximum starting rate; exceeding this threshold can cause a loss of synchronization because inductive reactance and the 0.84 Ω per phase winding resistance restrict the available torque rise. The 0.5 mH per phase inductance controls the current slew rate, which influences microstepping linearity and high-frequency performance.
Once the load is in motion, the pulse frequency can climb to a 14,000-pulse-per-second slew rate, allowing rapid indexing after the system has overcome the load inertia. The low rotor inertia of 0.053 × 10⁻⁴ kg·m² supports this operating capability. A 42 mm square flange aligns with NEMA 17-style brackets, and the single circular output shaft simplifies coupling to gears or timing pulleys. The housing is 39 mm long, and the assembly weighs 0.3 kg, reducing cantilever forces on linear slides. Electrical connections use a connector-style header, simplifying wiring compared with flying leads. The enclosure has an IP40 rating, so the motor should be installed in a clean, dry location. Its single-shaft configuration leaves the rear face available for an encoder when closed-loop feedback is required.
