Synchronous motor is a type of common AC motor. The excitation winding uses DC excitation current to establish the magnetic field. The three-phase symmetrical armature winding acts as the power winding. The armature winding and the main magnetic field perform relative cutting motion. Widely used in applications such as adhesive machines, monitors, electric curtains, stage lighting, advertising displays, electrical equipment, and scientific educational instruments. Specifications: Voltage: AC 12V Frequency: 50-60Hz Speed: 5-6 RPM Color: Silver Rated Power: 4W Working Direction: CCW Gear Material: Plastic Shaft Diameter: 7mm (0.28 inch) Shaft Length: 15.5mm (0.61 inch) Internal Thread Size: M3 Body Diameter: 50mm (1.96 inch) Body Height: 20mm (0.78 inch) Mounting Hole Diameter: 4.5mm (0.17 inch) Wire Length: 410mm (16.14 inch) Package Includes: 1 x Synchronous Motor