Project record · 2017
Main conveyor gearbox repairs — Eskom power station
Repair of two main coal conveyor gearboxes, including the manufacture of a new output shaft to drawing.
| Client | Eskom Holdings SOC Ltd (via the main contractor) |
|---|---|
| Sector | Power generation |
| Location | Mpumalanga |
| Role | Subcontractor |
| Reference | Purchase order on file |
| Period | From December 2017 |
Evidence held on file: Purchase order.. Contract value available to prospective clients on request.
Scope of work
- Repair of two main coal conveyor gearboxes.
- Material treatment of the affected components.
- Manufacture of a new output shaft to drawing.
- Manufacture and fitting of a new bush.
Method and quality
Outcome
Both main conveyor drive trains returned to service. This was Umbusso’s first Eskom generation work.
Services delivered on this project
Gearboxes & machiningGearbox Repair, Shaft Manufacture & CNC Machining
Conveyor and drive gearboxes stripped, assessed and rebuilt with shafts, bushes and machined components manufactured in our Benoni South engineering workshop under a 15-ton overhead crane.
Service details →
MechanicalMechanical & Rotating Equipment Maintenance
Planned, outage and breakdown maintenance on operating plant — coolers, pumps, conveyors, drives and their structures — under permit-to-work, with supervised resources when a section needs them for a year.
Service details →More project records
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Eskom Holdings SOC Ltd · 2025–2026
Read the project record →Conveyor pulley manufacture
Eighteen conveyor pulleys manufactured to Eskom drawing under a quality control plan counter-signed by Eskom Quality Assurance before manufacture began, together with bearings, pillow blocks, idler frames and drive components.
Eskom Holdings SOC Ltd · 2024–2025
Read the project record →EVAPCO cooler refurbishment
Refurbishment of three closed-circuit evaporative coolers, restoring the fan and motor drive trains to service.
Eskom Holdings SOC Ltd · 2024
Read the project record →Technical background to this work
The reviewed articles behind the method used on this job.
Output-shaft and bush failure on main conveyor drives: repair, shaft manufacture and re-commissioning
When the output shaft of a main conveyor gearbox fails, the plant loses a belt and often waits months for an OEM unit. This article explains why output shafts and bushes fail, how to assess a stripped gearbox, and how a new shaft is manufactured and the unit re-commissioned.
Reviewed by the Operations Manager · September 2026
Read the article →Have a similar scope?
Tell us the plant, the equipment and the window. We will come back with questions, a site-visit date or a priced quotation with a quality plan outline.
Office +27 17 007 0135 · WhatsApp +27 72 535 1598 · info@umbussoengineers.co.za
