Why Is In-Situ Machining Cost-Effective?
In-situ machining is a precision engineering process performed directly onboard, eliminating the need for component removal or engine dismantling.
KIMI restores crankpins, main journals, and propulsion system components using portable machining systems, precision grinding, and controlled induction annealing to recover geometry, surface finish, and material properties to OEM standards.
All processes are supported by metallurgical assessment, ISO 17025-certified hardness and surface testing, and full NDT (PT, MT, UT) by Level II certified inspectors, ensuring accuracy, material integrity, and class compliance.
In-Situ Machining Advantages
No dismantling or crankshaft removal required
Significantly reduced downtime and operational disruption
Cost-effective on-site repair solution
OEM-level dimensional accuracy and material restoration
Why Choose KIMI for In-Situ Machining?
Crankshaft Restoration Expertise
Precision crankpin grinding and controlled induction annealing to restore geometry and hardness.
Advanced Inspection & Quality Control
Metallurgical analysis, ISO 17025-certified hardness testing, surface roughness verification, and full NDT.
Propulsion & Steering System Capability
In-situ line boring, laser alignment, and repair of propulsion shafts, stern tubes, rudder bearings, and steering gear.
24/7 Rapid Response Worldwide
Immediate mobilization for emergency breakdowns and critical onboard repairs.
In-Situ Solutions for Major OEMs
FAQs
KIMI can repair worn or damaged crankpins, including scoring, ovality, taper wear, surface cracks, and hardness issues. The process includes precision grinding, induction annealing, and full NDT inspection to ensure reliable restoration.
KIMI has extensive experience working on a wide range of marine crankshafts across major engine makers. Our team has successfully completed in-situ grinding and machining on engines such as:
- Daihatsu Diesel DK series : DK20, DK22, DK28, DK32
- Yanmar engines:6EY22, 6EY28
- MAN Energy Solutions engines : L21/31, L23/30, L27/38, L28/32
- Wärtsilä engines: Wärtsilä 20, 26, 32
This broad experience enables KIMI to handle diverse crankshaft designs, sizes, and operational conditions, delivering OEM-compliant results across various 4-stroke marine engine types.
KIMI has in-house expert teams and continuously develops service capabilities. All operations are carried out by dedicated specialists—not subcontractors—ensuring full control, consistency, and quality at every stage.
With years of hands-on field experience, KIMI has developed and refined its in-situ machining services using advanced equipment, proven methodologies, and continuous technical improvement. This allows us to deliver reliable, OEM-compliant results across a broad range of crankshaft sizes and engine types.
Yes. KIMI provides complete repair solutions tailored to each case. Whenever possible, our expert teams perform in-situ crankshaft grinding onboard, minimizing downtime and avoiding engine dismantling.
If on-site repair is not feasible due to the extent of damage or operational constraints, crankshafts can be repaired in-house using advanced processes such as laser cladding, straightening, and precision grinding for crankshafts up to 7 meters in length. This flexible approach ensures the most efficient, reliable, and cost-effective solution while restoring components to OEM specifications.
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