103H7333-0340 Sanyo Denki
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The Sanyo Denki 103H7333-0340 is a stepping motor from the StepSyn Stepping Motors series with a flange size of 56 mm and a motor length of 75.8 mm. This motor delivers a holding torque of 1.1 Newton-meters and operates at a rated current of 3 Amps per phase. It has a basic step angle of 1.2 degrees and an IP40 protection rating.
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Product Description:
The 103H7333-0340 is a stepping motor produced by Sanyo Denki as part of the StepSyn Stepping Motors series. It translates digital pulse trains into fixed angular increments so motion controllers can position loads without closed-loop feedback. This operating method makes the device suitable for pick-and-place heads, labeling stations, and compact actuators that require predictable start-stop behavior and high holding capability. The motor can maintain a commanded position while energized, which supports applications that require stable motion between indexing cycles.
Its basic step angle is 1.2°, so each full step advances the shaft by that amount, yielding 300 discrete positions per revolution. A holding torque of 1.1 N·m lets the energized motor resist external forces, which is important for vertical axes. The square mounting flange measures 56 mm, matching industry-standard 23-frame hardware, and the stator windings draw 3 A per phase at standstill. The winding inductance of 2.4 mH per phase works with the winding resistance of 1.7 Ω per phase to determine current rise time and copper loss. The motor has a length of 75.8 mm and a pilot diameter of 38.1 mm, which centers the housing on mating brackets. Its circular output shaft simplifies coupling to gears or pulleys, while a rotor inertia of 0.36 × 10⁻⁴ kg·m² supports quick acceleration. Electrical termination is made through a dedicated connector that reduces wiring errors during installation.
With a mass of 0.98 kg, the motor adds minimal weight to moving assemblies while providing thermal capacity for continuous operation. The shaft is ground to a diameter of 6.35 mm, allowing it to fit common couplings directly without bushings. An enclosure rating of IP40 protects the interior from tools and small solid particles, so the motor can be mounted inside cabinets or guarded areas without additional sealing. The stator uses a three-phase winding, which balances torque production and reduces detent oscillation when a microstepping drive energizes the coils. The connector, pilot diameter, and square flange support secure installation within compact machine assemblies.
