Product Description:

The 103-807-6341 is a hybrid stepping motor manufactured by Sanyo Denki for the StepSyn Stepping Motors series. It advances its rotor in discrete electrical increments under pulse control, providing reliable open-loop positioning for index tables, metering pumps, and light conveyor axes in automated equipment. A square housing with a concentric pilot simplifies alignment with standard mounting plates, so the motor can be installed in machinery that requires precise, repetitive motion.

The rotor moves one mechanical step of 1.8° per full-step command, providing fine angular resolution without feedback devices. When both windings are driven in a bipolar configuration, the shaft can resist an external load with a holding torque of 170 N·cm. That torque is achieved at a bipolar parallel current of 4.3 A, while the phase resistance of 0.95 Ω limits copper loss during a continuous stall. A winding inductance of 3.8 mH affects the current rise time and how rapidly the drive can switch between microstep levels. Electrical back EMF is rated at 33 V/krpm. This value helps with selecting a supply voltage that maintains adequate margin between the induced voltage and drive-bus voltage at the target speed.

A rotor inertia of 560 × 10⁻⁷ kg·m² supports a theoretical acceleration of 30,000 rad/s², allowing rapid start-stop sequences when the motor is coupled to low-mass loads. The housing is rated IP43, providing basic protection against ingress by solid objects and water spray. The motor has an overall mass of 1.4 kg, which limits the added weight on moving-axis assemblies while helping to damp vibration. Its mechanical features include a 9.525 mm shaft, a 73.025 mm pilot, 5.6 mm mounting holes, and lead wires at least 305 mm long. A unipolar drive configuration draws 3.05 A and provides 135 N·cm of static torque.