CARBON BRUSH FOR ELECTRIC MACHINE

摘要

As a solid lubricant, molybdenum disulfide or tungsten disulfide and as an abrasive, alumina, silica, or silicon carbide are added to filler graphite. An electrically good conductor metal is applied to the entire surface except the contact area with a commutator. When the commutator rotates clockwise, the coating of the electrically good conductor metal is mechanically removed from the left-hand side, both left-hand and right-hand sides, or the entire surface.