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Analysis and restoration of a 45.7 MW turbo gearbox affected by lubrication failure, involving component replacement and precision gear regrinding.
We performed a critical diagnostic analysis and repair on a Renk Tacke TLEQ-850 turbo gearbox. This massive parallel shaft unit, rated at 45,700 kW, operates at high speeds (over 4,700 rpm) where lubrication quality is paramount.
Our inspection revealed significant damage: burnt areas on the gears and bearings caused by degraded, low-quality oil. To salvage the unit and restore it to operational standards, we executed a comprehensive remediation plan. This included the replacement of damaged components and the precision re-grinding of gear teeth to remove surface defects. Following rigorous testing and a final inspection, the gearbox was successfully returned to service.
Gearbox make: Renk Tacke
Type: TLEQ-850
Power in kW: 45,700
Architecture: Parallel shaft
Industry: Power generation
Scope of work: Inspection, Repair, Re-grinding
Type of repair: Repair / Overhaul
Ratio: 3.152:1
Input/Output Speed: 4,727 / 1,500 rpm
Year: 2015
Country: Czech Republic
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