Grounding brush assembly

A grounding brush assembly mountable between a casing having a bore and a shaft disposed within the bore, the grounding brush assembly comprising:

• a grounding brush including a support and a plurality of conductive fibers housed within the support;
• and
• a brush mounting plate secured to the support and including at least one radial portion extending radially outwardly with respect to the support and at least one centering portion extending axially from the radial portion and being spaced apart radially from and at least partly surrounding the support, the centering portion having a proximal end connected to the radial portion and a distal end, the proximal and distal ends delimiting an axial dimension of the centering portion, the centering portion including alternating small diameter sections and large diameter sections connected by connecting sections, the large diameter sections being disposable against the bore of the casing and the small diameter sections being spaced axially inwardly from the bore, and at least one orifice formed in at least one of the small diameter sections of the centering portion and spaced a distance apart from the proximal end and a distance apart from the distal end and configured to enable insertion of a tool for dismantling the assembly from the bore of the casing.