A grounding brush assembly is for an electric machine including a rotatable shaft having a bore, an outer housing, bearing(s) rotatably coupling the shaft with the housing and a fixed shaft extending through the bore of the rotatable shaft and electrically grounded. A conductive base member has a bore sized to receive a portion of the fixed shaft, a centerline and an outer circumferential surface. A conductive brush or brushes are coupled with the base member and includes conductive fibers extending radially outwardly from the outer surface of the base member and axially along the centerline. Each conductive fiber has an inner radial end coupled with the base member and an outer radial end engageable with the inner circumferential surface of the rotatable shaft such that at least one conductive path extends from the rotatable shaft, through the brush and the base member, and to the fixed shaft.

A grounding brush assembly is for an electric machine including a rotatable shaft having a bore, an outer housing, bearing(s) rotatably coupling the shaft with the housing and a fixed shaft extending through the bore of the rotatable shaft and electrically grounded. A conductive base member has a bore sized to receive a portion of the fixed shaft, a centerline and an outer circumferential surface. A conductive brush or brushes are coupled with the base member and includes conductive fibers extending radially outwardly from the outer surface of the base member and axially along the centerline. Each conductive fiber has an inner radial end coupled with the base member and an outer radial end engageable with the inner circumferential surface of the rotatable shaft such that at least one conductive path extends from the rotatable shaft, through the brush and the base member, and to the fixed shaft.

A grounding brush assembly is for an electric machine include a rotatable shaft having a bore, an outer housing, bearing(s) rotatably coupling the shaft and housing and an electrically-grounded, fixed shaft extending through the rotatable shaft bore. A conductive base member receives the fixed shaft and has a main body portion and at least one end body portion with an outside diameter less than the main body portion outside diameter. A centering bearing is disposed about the end body portion. A conductive brush coupled with the main body portion includes conductive fibers extending radially outwardly from the main body portion and axially along a centerline. Each conductive fiber has an inner radial end coupled with the base member and an outer radial end engageable with the inner circumferential surface of the rotatable shaft such that at least one conductive path extends from the rotatable shaft to the fixed shaft.

A grounding brush assembly is for an electric machine include a rotatable shaft having a bore, an outer housing, bearing(s) rotatably coupling the shaft and housing and an electrically-grounded, fixed shaft extending through the rotatable shaft bore. A conductive base member receives the fixed shaft and has a main body portion and at least one end body portion with an outside diameter less than the main body portion outside diameter. A centering bearing is disposed about the end body portion. A conductive brush coupled with the main body portion includes conductive fibers extending radially outwardly from the main body portion and axially along a centerline. Each conductive fiber has an inner radial end coupled with the base member and an outer radial end engageable with the inner circumferential surface of the rotatable shaft such that at least one conductive path extends from the rotatable shaft to the fixed shaft.

A grounding brush assembly includes a grounding brush having a plurality of conductive fibers and a support including a mounting portion housing the conductive fibers and first and second lateral flanges extending from the mounting portion and fitting axially around the conductive fibers. A mounting plate is integral with the support and is provided with at least one radial portion extending radially outwardly relative to the mounting portion of the support. The free end of the radial portion of the mounting plate at least partially defines the outer diameter of the assembly.

The grounding brush assembly includes a grounding brush provided with a plurality of conductive fibers and a holder inside which the conductive fibers are mounted, and a brush mounting plate rigidly connected to the holder. The holder and the conductive fibers each extend helically, the holder being provided with a first end and a second end that define the circumferential dimension of the holder and are axially offset relative to each other.

The grounding brush assembly includes a grounding brush provided with a plurality of conductive fibers and a holder inside which the conductive fibers are mounted, and a brush mounting plate rigidly connected to the holder. The holder and the conductive fibers each extend helically, the holder being provided with a first end and a second end that define the circumferential dimension of the holder and are axially offset relative to each other.

A grounding brush has a first set of filaments, which belong to a first type, and at least a second set of filaments. The filaments of the second set of filaments belong to a second type, which differs from the first type.

A grounding brush has a first set of filaments, which belong to a first type, and at least a second set of filaments. The filaments of the second set of filaments belong to a second type, which differs from the first type.