Brush Density Calculator

Brush Details

Total Number of Current-Carrying Brushes(Required)

Value must be an even number. Include all brushes on both polarities. Exclude any insulated voltage monitoring brushes.

Brush Thickness (Inches)(Required)

This is the dimension in the same direction as the shaft's rotation.

Brush Width (Inches)(Required)

Brush dimension parallel to the shaft's axis.

Normal Operating Field Amps

Also called, 'Excitation Amps'. This value is the normal operational field amps. This value can typically be found in the control room during normal operation.

Normal Operating Field Amps

Amps Per Square Inch (Normal)

Amps Per Brush (Normal)

Maximum Operating Field Amps

Also called, 'Excitation Amps'. This is NOT nameplate field amps. This value is taken from the control room historical data or commonly known by a control room operator. This is the value that is rarely exceeded.

Maximum Operating Field Amps

Amps Per Square Inch (Max)

Amps Per Brush (Max)