Use this tool to calculate the brush current density on slip rings or a commutator.

Note: Each brush grade and each brush manufacturer has a specific set of operating parameters that will optimize performance. Cutsforth Inc. provides brushes modified to fit Cutsforth’s EASYchange® Brush Holders and is not the originating grade manufacturer. Please contact your brush grade manufacturer (Morgan/National, Helwig, Mersen, etc.) to obtain these operating parameters.