From precision manufacturing in our South African workshops to on-site maintenance across the DRC, MMFG delivers end-to-end mining engineering solutions.
Our workshops in Johannesburg, South Africa are equipped with high-performance CNC and conventional machinery capable of fabricating all types of mechanical components for the mining industry. We specialize in large-scale precision machining for grinding mills, kilns, and heavy rotating equipment.
Complete gearbox assemblies for mining and industrial applications. Custom designs to match OEM specifications or bespoke requirements.
Large-diameter girth gears for grinding mills and rotary kilns. Precision-machined to ensure concentricity and long operational life.
Fabrication and refurbishment of grinding mill shells including flanges, trunnion interfaces, and liner bolt holes.
Precision-machined trunnion ends and trunnion plummer blocs for ball mills, SAG mills, and rod mills.
Single and dual pinion assemblies with precision-ground teeth. Shafts manufactured from 1.5m to 7m in length.
Riding rings, tyres, kiln rollers, and support rollers. Manganese, high chrome, and chrome moly castings for mill shell liners.
Custom flexible couplings designed to absorb misalignment and vibration in heavy rotating equipment drives.
Complete thickener drive mechanisms for mineral processing circuits. Designed for continuous, high-torque operation.
Cast and forged grinding media (balls and rods) for SAG mills, ball mills, and rod mills. Various alloy compositions available.
Our maintenance teams deploy to mine sites across the DRC and Southern Africa to provide both scheduled and emergency maintenance services. We specialize in the repair and maintenance of grinding mills, crushers, conveyors, gearboxes, and all rotating equipment used in mineral processing.
We bring the workshop to the mine — with mobile machining equipment and experienced technicians who can perform precision repairs on-site, minimizing downtime and transport costs.
Complete refurbishment of mining plant and equipment to restore them to full operational capacity. Our refurbishment programs include full mechanical overhaul, structural steel repair, new drive systems, electrical re-cabling, and SCADA/PLC control system upgrades.
Our landmark MIBA diamond mine refurbishment proposal demonstrated our capability to renovate an entire 400 TPH kimberlite processing plant — from jaw crushers and scrubbers through DMS cyclones to the final recovery circuit.
We train local labour and employees in the use of mining equipment while applying the highest international standards of safety. Our training programs cover equipment operation, preventive maintenance procedures, safety protocols, and quality control.
Building local capacity is central to our mission. By training Congolese workers to operate and maintain sophisticated mining equipment, we contribute to the long-term sustainability and self-reliance of the DRC mining sector.
From a single replacement gear to a complete plant refurbishment, MMFG has the capability and experience to deliver.