LH Marthinusen, a division of ACTOM (Pty) Ltd, is a global leader in electro-mechanical repairs and manufacturing. We specialize in repairing and refurbishing motors, industrial fans, transformers, and related equipment, offering services such as oil testing, DC motor rebuilds, and site support.
We provide comprehensive repair and maintenance services for all types of industrial fan systems, including axial and centrifugal fans. Our offerings include performance testing and balancing, fan upgrades and modifications, as well as energy efficiency optimization to enhance system reliability and reduce operational costs.
We specialize in the repair, overhaul, and servicing of rotating machines, including large and medium voltage motors, DC motors, AC and DC traction motors, as well as alternators. Our technical expertise ensures reliable performance and extends operational life of your critical equipment.
We offer comprehensive servicing and manufacturing capabilities for transformers ranging from 50kVA to 300MVA and up to 275kV. LHM delivers end-to-end transformer solutions across all industrial sectors, including precision manufacturing, expert repairs, refurbishments, and fully equipped on-site support. Our expertise spans power distribution, furnace, rectifier, traction, mini-sub, and dry-type transformers, as well as advanced components such as reactors, voltage regulators, and a dedicated transformer oil facility.
Our Engineering Services team provides on-site support, including condition monitoring, fault diagnostics, refurbishment, and commissioning of motors, transformers, and industrial fans. We focus on life extension, oil testing, and general maintenance to ensure reliable performance and minimal downtime.
We manufacture precision-wound coils to IEC standards, with full insulation and surge testing. Our in-house wire drawing ensures fast delivery of high-temperature insulated copper wire. We produce laser-cut laminations up to 1.2m in diameter and offer Transnet-approved commutator builds and rebuilds for traction, mining, and industrial motors.