Mining Motors

AC Hargreaves provides expert repair, overhaul, and rewinding services for mining motors used in open-cut coal operations. Our dedicated team of highly skilled tradespeople has extensive experience servicing dragline and rope shovel equipment, ensuring optimal performance and reliability in demanding mining environments.

Close-up of an electric motor rotor in a workshop.

Comprehensive Motor Solutions for Mining Application

We specialise in the maintenance and refurbishment of high-performance mining motors, including Excavator Duty DC Mill Motors, Dragline AC Synchronous Motors, and Rope Shovel AC & DC Motors. Our expertise extends to traction alternators, wheel motor armatures, and retarder grid blower motors. We deliver comprehensive diagnostics, root cause analysis, and tailored repair solutions to maximise uptime and operational efficiency.

Two large industrial machines on a flatbed trailer in front of a building with the logo "AC Hargreaves" and "Bearing Motor Repair."

Key Capabilities

  • Overhaul & repair: All dragline-associated excavator duty mill motors and generators
  • Generator armature rewinds: Precision rewinding for extended service life
  • AC & DC motor rewinds: General Electric and Westinghouse MG set synchronous motor stators and salient pole rotors
  • Comprehensive reporting: Detailed root cause analysis with recommendations for long-term performance

Workshop & Product Gallery

Close-up of an industrial electric motor rotor with winding and insulation layers visible.
Large industrial orange motor or generator on a metal platform
A large yellow industrial cylinder secured in a blue frame in a workshop.
Close-up of an electrical component in an industrial machine, featuring copper connectors and wires.
Industrial equipment featuring a large white cylindrical component with a covered shaft, possibly a motor or pump, located in a warehouse or workshop.
Large industrial roller bearings on a workshop table.
Close-up of a large industrial cylinder with copper windings in a workshop.
Man in safety vest observing smoke in industrial facility
Person working on industrial equipment with metal pipes and large containers in a warehouse setting.
Industrial white machine with a motor and cylindrical structure in a factory setting.
Metal frame with wooden planks strapped securely to a wooden pallet on a concrete floor.
Large industrial electric motor in a factory setting
Heavy-duty yellow and red industrial lifting attachment rated at 12000 kg, secured with straps, likely for construction equipment use.
Close-up of an electric motor rotor with visible coils and connectors.
Large industrial electric motor rotor with red housing and exposed coils.
Large industrial dynamo or generator on a platform in a workshop, featuring a red and white casing and visible internal components.
Industrial transformer core in a factory setting, surrounded by yellow support structures and metal walls.
Large industrial spool with red and white insulating materials in a factory setting.
Stacked piano key parts in a workshop, accompanied by sheets of paper, roll of tape, and a pair of pliers.
Large industrial cylinder wrapped in plastic, mounted on a blue and yellow support frame in a workshop.
A large blue industrial container secured on a flatbed trailer with an orange tarp covering some equipment in the background, parked inside a loading area.
Large industrial machine component with coils and bolts inside a factory setting.
Close-up of an industrial motor rotor with copper windings, mounted on a support stand in a workshop.
A large industrial stator coil wrapped with red and white insulation on a cylindrical core.
Industrial workshop with large machinery parts including rotors and stators
Close-up of an industrial electric generator or motor rotor with copper coils and wiring.
Industrial machine component with stacked metal discs and a steel base in a workshop setting.
Industrial hydraulic press machine in a workshop environment
Industrial metal cylinder with copper and yellow insulation layers in a workshop.
Hands using a digital force gauge on a metal plate secured with clamps.
Industrial machinery with large white and red turbines inside a warehouse setting.
Large industrial machinery, likely a mining machine, painted white, with various components and filters, positioned inside a warehouse setting.
Large industrial motor in a workshop, suspended with chains.
Industrial equipment with copper coils and metallic components in a workshop setting
Large industrial motor stator with red windings, seen at an industrial facility.
Close-up of red-painted metal components in machinery, possibly part of an industrial motor or electrical transformer, showing stacked plates and wires.
Close-up view of an industrial electric motor stator with visible copper windings and wiring, set in a workshop environment.
Close-up of a handheld electrical testing device showing a digital display with measurements, buttons, and dials.
Large industrial white generator with yellow base in a workshop setting.
Large industrial electric motor in a warehouse setting with machinery in the background.
Industrial generator or large machine in a warehouse setting, painted white and mounted on a yellow base.
Large industrial equipment on a trailer outside a building labeled A.C. Hargreaves & Co, with workers nearby, possibly involved in transportation or maintenance.
Large industrial generator on a flatbed trailer being transported from a warehouse, with workers in safety gear nearby.
Long yellow industrial pipe on a wooden pallet in a workshop surrounded by various machinery and tools.
Large industrial motor part on stand in workshop
A blue metal container housing a yellow cylindrical component, possibly a hydraulic or pneumatic cylinder, located in an industrial setting with concrete flooring.
Industrial workshop with machinery, tools, and equipment in a metal building.
Close-up of an industrial motor stator being assembled, showing copper windings and a red insulated casing.
Industrial machinery components in a factory setting, featuring large cylindrical parts with metal rings and coils, arranged in rows.
Industrial workshop with large machinery components and rotors
Air hose kit with accessories, including tool oil and components, on a table.
A large industrial machine with a worn appearance, labeled "Westinghouse," sitting inside a warehouse. It has a cylindrical body with visible components and a protruding shaft, suggesting it might be an old generator or motor. The warehouse surroundi
Two large industrial machinery components on a flatbed truck in front of a building with "AC Hargreaves" signage.
Industrial workshop with large white machinery
Industrial equipment parts in a workshop, including large cylindrical components made of metal and copper coils, likely for electrical or mechanical machinery maintenance or assembly.
Assembly line with industrial machinery, including large white compressors and red components, inside a warehouse.
Row of industrial machines in a workshop setting, with tools and equipment visible in the background.
Electric generator rotor with testing equipment nearby
Interior view of an electric motor showing copper windings and components, partially disassembled.
Stacked and coiled copper busbars on a workshop table with red rectangular metal blocks.
Large industrial rotor or stator component with coils in a workshop.
Industrial electric motor with exposed rotor and wiring in a workshop setting.
Large red industrial fan or blower unit in a warehouse
Large industrial machine wrapped in plastic on a flatbed truck in a warehouse.
Close-up view of an industrial electric motor showing its copper windings and internal components.
Large industrial motor painted white, positioned in a workshop with tools and machinery in the background.
Close-up of a transformer coil with copper windings and connections.
Large industrial motor testing setup with cables and control panels.
Large red industrial machine labeled 'SYNC #2' being lifted by cranes in a workshop, with a person guiding the operation.
Close-up view of electrical components including copper wires, connectors, and a metallic frame, with a person's hands visible at the top, adjusting the components.
Close-up of an electric motor or generator rotor with visible copper windings and metal components inside an industrial setting.
Industrial workshop with orange machinery and equipment, including large engines and tool carts.