Expanded tang commutators are the preferred choice for medium volume, moderate sized motors typically dependent on mica molded commutators. The tang diameters are expanded outboard to allow a larger wire connection, while using a smaller brush track diameter.

• Commonly considered for motor designs that normally utilize mica molded commutators between 25mm and 75mm brush track diameter
• Features all the characteristics of a standard tang commutator plus the benefit of an expanded riser diameter
• Tangs supported by phenolic to facilitate fusing
• Phenolic strengthens the tang and reduces possibility of bar-to-bar shorts
• Tangs outboard from brush diameter allowing easier winding with larger wire gauge
• Enlarged winding diameter provides more clearance between tangs, while keeping the brush track diameter and brush holder dimensions at minimum levels for small motor designs

Expanded Tang Commutators PDF