Motor rebuilt for Zambian copper mine
October 2016
News
Marthinusen & Coutts, a division of Actom, recently completed the rebuild of a 6550 kW 2 pole 11 000 V squirrel cage induction blower motor for a copper mine in Zambia.
According to Rob Melaia, engineering and technical executive at Marthinusen & Coutts, the motor had suffered a rotor failure, which caused collateral and associated damage to the stator and also considerable damage to the rotor laminations at the core extremities.
The repair work undertaken comprised a stator rewind, a rotor rebar, including a partial recore with new laminations, and the replacement of the P900 high strength rotor retaining rings.
Interestingly, the retaining rings are made from the same steel used for the largest turbo generator in the world and it was sourced by Marthinusen & Coutts from a leading German supplier in record time. “Working closely with our network of local and international partners facilitates access to specialists in all fields and allowed fast procurement of these specialised rings,” says Melaia.
Once the rebuild had been completed, the motor was tested at Marthinusen & Coutts’ facility which houses the third largest high speed dynamic balancing machine in sub-Saharan Africa. “We were able to perform high speed balancing as well as a full no-load run test to verify vibration and bearing integrity condition performance,” concludes Melaia.
For more information contact Richard Botton, Marthinusen & Coutts, +27 (0)11 607 1700, [email protected], www.mandc.co.za
Further reading:
Helping mines get results from water improvements
News
South African mines operate under constrained, water-scarce conditions where every investment must be justified. Xylem’s Chetan Mistry explains how the right water technology partner helps mines prioritise high-value water systems across the mining lifecycle.
Read more...
From solar to water, onsite plants are the next big industrial resilience shift
News
South African industrial operators who secured their energy supply with onsite solar generation now face the same imperative with water. Robert Erasmus of Sanitech argues that onsite water treatment is the next essential pillar of business continuity.
Read more...
From the editor's desk: Pushing engineering to the limit
Technews Publishing
News
Among the many things robots can do, it’s a lot of fun to follow how fast they are. They go from the Boston Dynamics cheetah, which first reached a record-breaking speed of 45,5 km/h, to the robot Charlie
...
Read more...
Schneider Electric concludes Innovation Summit Middle East and Africa
Schneider Electric South Africa
News
Schneider Electric's Innovation Summit Middle East and Africa, held in Abu Dhabi with more than 2500 attendees, explored the convergence of energy, AI and industrial software, launched an Industrial AI study and announced the NEST Accelerator Programme for energy and industrial tech startups.
Read more...
VEGA brings measurement expertise beyond mining to Electra Mining Africa 2026
VEGA Controls SA
News
VEGA used its Electra Mining Africa 2026 stand to demonstrate that its level and pressure measurement instruments extend well beyond mining, covering water, food and beverage, pharmaceuticals, chemicals, and oil and gas applications across the continent.
Read more...
Sustainable solutions for sugar
Bearing Man Group t/a BMG
News
BMG received a Special Commendation Exhibition Stand Award at the South African Sugar Technologists’ Association Congress, where it showcased an integrated turnkey drive solution designed to simplify the upgrading of ageing crushing-mill drive systems.
Read more...
Measure, Manage, Maintain: The operating model behind SA’s water resilience
Siemens South Africa
News
South Africa’s growing water crisis is putting pressure on infrastructure, municipalities and the economy. Siemens highlights how digital technologies, smarter operations and safe water reuse could help shift the country from crisis response towards a more resilient and sustainable water future.
Read more...
VEGA brings measurement expertise beyond mining to Electra Mining Africa 2026
VEGA Controls SA
News
VEGA used its Electra Mining Africa 2026 stand to demonstrate that its level and pressure measurement instruments extend well beyond mining, covering water, food and beverage, pharmaceuticals, chemicals, and oil and gas applications across the continent.
Read more...
Schneider Electric concludes Innovation Summit Middle East and Africa
Schneider Electric South Africa
News
Schneider Electric’s Innovation Summit Middle East and Africa, held in Abu Dhabi with more than 2500 attendees, explored the convergence of energy, AI and industrial software, launched an Industrial AI study and announced the NEST Accelerator Programme.
Read more...
RX Africa and Messe Muenchen India join forces to strengthen business platforms in Africa
RX Africa
News
Messe Muenchen India has announced a strategic partnership with RX Africa to strengthen the scale, reach and market impact of its premier co-located trade fairs, analytica Lab Africa and IFAT Africa, ahead of their 2027 editions.
Read more...
printer friendly version