Product overview This is a complete electromechanical assembly that includes a base, closed iron ring, electromagnet, pole piece, armature, commutator, rotating shaft, brush, rocker, handle, and associated hardware. It is configured for clear polarity identification and reliable mechanical and electrical operation. Key benefits Clear, modular design for demonstration, testing, or integration into small electromechanical projects. Robust magnetic circuit: closed iron ring and pole piece use 3 mm thick iron plate for stable magnetic flux. Reliable commutation: a combined tworing copper commutator provides current feed and reversing functionality for the rotating coil. Durable moving parts: 8 mm diameter steel shaft and tin bronze brush material deliver stable mechanical contact and wear resistance. Easy polarity and wiring identification: coil ends are bandaged with red and blue insulating tape; iron ring and pole piece are painted red and blue for visual identification. What is included Base and handle for mounting and manual operation. Closed iron ring and pole piece, made from approximately 3 mm thick iron plate, painted red and blue. Ring width about 75 mm, outer diameter about 180 mm. Electromagnet wound on an iron core using strength enameled wire; the two electromagnet coils are wired in series. Armature: rectangular multiturn coil, coil size approximately 140 x 70 mm, with both ends bandaged in red and blue insulating tape. Commutator: combined current and reversing device made of two copper rings, approximately 22 mm diameter by 30 mm length. Rotating shaft: round steel, 8 mm diameter, length about 150 mm. Brush: tin bronze foil, thickness 0.3 mm, length 80 mm, width 7 mm. Rocker and associated mechanical linkage for converting electromagnetic action to mechanical motion. Technical highlights Magnetic components: closed iron ring and pole piece provide a concentrated magnetic path; iron plate thickness about 3 mm supports structural rigidity. Coil construction: armature coil dimensions 140 x 70 mm give a clear winding area for multiturn configurations. Coil ends are colorcoded for polarity. Commutation: tworing copper commutator handles current feed and polarity reversal for the rotating coil, enabling continuous or reciprocating motion depending on wiring and rocker arrangement. Mechanical interface: 8 mm diameter shaft and 150 mm length facilitate mounting in standard test rigs and fixtures. Brush dimensions and tin bronze material are chosen for consistent electrical contact. Performance and reliability Designed for stable electromagnetic operation with serieswired electromagnet coils and a multiturn armature coil. Component choices such as 3 mm iron plate, steel shaft, and tin bronze brush aim to provide consistent mechanical and electrical contact over repeated use. Painted pole pieces and colorbanded coil ends simplify setup and reduce wiring errors. Typical applications Educational demonstrations of electromagnetic principles, commutation, and motor action in classrooms or labs. Prototype and development use in small electromechanical devices where a clear, serviceable commutation assembly is required. or replacement part for demonstration rigs and experimental apparatus that use a rectangular armature coil and tworing commutator. Compatibility and installation notes Provides standard mechanical dimensions for integration: armature 140 x 70 mm, iron ring outer diameter about 180 mm, commutator 22 mm diameter by 30 mm length, shaft 8 mm diameter by 150 mm length. Electrical connections use colorcoded coil ends for straightforward wiring. The electromagnet coils are already connected in series; verify wiring and brush alignment during installation. This assembly supplies the core mechanical and electrical components required for reliable electromagnetic demonstration, prototyping, and smallscale electromechanical projects.