A combined electrical insulator and conductor assembly for a bearing disposable between a shaft and a housing includes an annular insulator disposable about the bearing outer ring and configured to prevent electric current flow between the outer ring and the housing and including projections extending axially along and spaced circumferentially about a centerline. A conductor preferably includes a conductive disk with an outer radial end engageable with the housing inner surface, an inner radial end defining a central opening for receiving the shaft and openings each receiving a separate one of the plurality of projections of the insulator such that the disk is axially fixed relative to the insulator. An annular conductive brush subassembly is coupled with the conductive disk and includes a plurality of electrically conductive fibers contactable with the shaft outer surface so as to provide a conductive path between the shaft and the disk.

A brush holder for slipring brushes comprises a brush mount held by a lever at a base. The lever is connected by a base pivot to the base and is pivotable in a plane orthogonal to a brush mount pivot axis and/or to a slipring rotation axis. A spring is provided between the base and the lever. The brush mount is connected to the lever by a brush mount pivot pivotable in said plane. The brush mount holds a first brush and a second brush wherein the brush mount pivot is between the first brush and the second brush.

A brush holder for slipring brushes comprises a brush mount held by a lever at a base. The lever is connected by a base pivot to the base and is pivotable in a plane orthogonal to a brush mount pivot axis and/or to a slipring rotation axis. A spring is provided between the base and the lever. The brush mount is connected to the lever by a brush mount pivot pivotable in said plane. The brush mount holds a first brush and a second brush wherein the brush mount pivot is between the first brush and the second brush.

A shunt extends from a brush received by a brush box of a brush holder. The first end of the shunt can be connected to the brush, and the second end of the shunt can connect to the brush holder. A lever connects to a back plate of the brush holder, and the lever may reversibly and selectively rotate between a first position and a second position; the lever can have a distal portion, and the second position of the lever secures a portion of the shunt between the distal portion of the lever and another component of the brush holder. The secured portion of the shunt can restrict downward movement of the brush in the brush box, while a spring pushes downward on the brush in the brush in the brush box, to thereby fixedly position the brush in the brush box.

A shunt extends from a brush received by a brush box of a brush holder. The first end of the shunt can be connected to the brush, and the second end of the shunt can connect to the brush holder. A lever connects to a back plate of the brush holder, and the lever may reversibly and selectively rotate between a first position and a second position; the lever can have a distal portion, and the second position of the lever secures a portion of the shunt between the distal portion of the lever and another component of the brush holder. The secured portion of the shunt can restrict downward movement of the brush in the brush box, while a spring pushes downward on the brush in the brush in the brush box, to thereby fixedly position the brush in the brush box.

A grounding brush includes a wire extending along an arc, a plurality of conductive fibers each bent into a U-shape around the wire, and at least one support including a channel crimped about the fibers and wire to secure them to the channel. An assembly includes a mounting plate having an opening configured to surround a rotatable motor shaft having an axis of rotation, a plurality of tabs disposed in a circle around the periphery, each of the tabs extending axially from the first side of the mounting plate and radially toward the axis of rotation to define with an adjacent portion of the first side of the mounting plate a U-shaped bracket and a grounding brush mounted in the plurality of U-shaped brackets with the conductive fibers extending radially inward or outward. Also a method of mounting and adjusting the grounding brush in the assembly.

A grounding brush includes a wire extending along an arc, a plurality of conductive fibers each bent into a U-shape around the wire, and at least one support including a channel crimped about the fibers and wire to secure them to the channel. An assembly includes a mounting plate having an opening configured to surround a rotatable motor shaft having an axis of rotation, a plurality of tabs disposed in a circle around the periphery, each of the tabs extending axially from the first side of the mounting plate and radially toward the axis of rotation to define with an adjacent portion of the first side of the mounting plate a U-shaped bracket and a grounding brush mounted in the plurality of U-shaped brackets with the conductive fibers extending radially inward or outward. Also a method of mounting and adjusting the grounding brush in the assembly.

A grounding brush assembly includes a plurality of conductive fibers extending from at least one support, a mounting plate having a first side and a second side and an opening configured to surround a rotatable motor shaft having an axis of rotation, and a plurality of tabs disposed in a circle around the periphery. Each of the tabs extends axially from the first side of the mounting plate and radially toward or away from the axis of rotation to define with an adjacent portion of the first side of the mounting plate a U-shaped bracket. The at least one support is secured against the first side of the mounting plate by the plurality of tabs.

A grounding brush assembly includes a plurality of conductive fibers extending from at least one support, a mounting plate having a first side and a second side and an opening configured to surround a rotatable motor shaft having an axis of rotation, and a plurality of tabs disposed in a circle around the periphery. Each of the tabs extends axially from the first side of the mounting plate and radially toward or away from the axis of rotation to define with an adjacent portion of the first side of the mounting plate a U-shaped bracket. The at least one support is secured against the first side of the mounting plate by the plurality of tabs.

A grounding brush includes a wire extending along an arc, a plurality of conductive fibers each bent into a U-shape around the wire, and at least one support including a channel crimped about the fibers and wire to secure them to the channel. An assembly includes a mounting plate having an opening configured to surround a rotatable motor shaft having an axis of rotation, a plurality of tabs disposed in a circle around the periphery, each of the tabs extending axially from the first side of the mounting plate and radially toward the axis of rotation to define with an adjacent portion of the first side of the mounting plate a U-shaped bracket and a grounding brush mounted in the plurality of U-shaped brackets with the conductive fibers extending radially inward or outward. Also a method of mounting and adjusting the grounding brush in the assembly.