Among our core areas of expertise is the overhaul and repair of RENK and REINTJES propulsion reduction gear units. As critical components of a vessel’s propulsion system, these units are responsible for transmitting engine power and reducing speed to the propeller with maximum efficiency and reliability.
To support our clients, KIMI has developed a comprehensive, Class-approved repair methodology, combining advanced inspection techniques, reverse engineering, precision machining, manufacturing, and testing capabilities. This integrated approach enables us to restore reduction gear units to OEM specifications while minimizing downtime and extending equipment service life, including:
- Comprehensive inspection and condition assessment
- Complete dismantling and failure analysis
- Reverse engineering and manufacturing of worn, damaged, or obsolete components, including gears, bearings, shafts, and related parts
- Precision reassembly and alignment
- On-board installation, commissioning, and operational testing
With a portfolio exceeding 100 gearbox overhauls, KIMI has developed a deep understanding of propulsion reduction gear systems. Through advanced inspection, reverse engineering, precision machining, and rigorous quality control, we consistently deliver repairs that satisfy Classification requirements and meet OEM expectations for performance and reliability.
Why rely on KIMI:
Class-approved solutions
Cost-effective alternative to replacement
Faster turnaround than OEMs
OEM-standard quality
Trusted by Leading Shipping Companies Worldwide





KIMI offers high-performance, cost-effective solutions to extend your reduction gear life, meet tight repair schedules, and reduce reliance on OEM parts without compromising system integrity or vessel operability.