
In-Place CrankshaftGrinding Technology
Our proprietary technology eliminates the need to remove engines for crankshaft repairs, revolutionizing marine maintenance with unprecedented efficiency.
How It Works
Our systematic approach ensures precision, efficiency, and quality at every step.
Initial Assessment
Our engineers inspect the crankshaft condition, measure wear patterns, and determine the optimal grinding approach.
Equipment Setup
Portable grinding equipment is installed directly on the engine, precisely aligned with the crankshaft centerline.
Precision Grinding
Using computer-controlled equipment, we grind each journal to exact OEM specifications with real-time measurements.
Quality Verification
Comprehensive measurements, surface finish analysis, and documentation ensure compliance with manufacturer standards.
Reassembly & Testing
New undersized bearings are fitted, and the engine undergoes complete testing before returning to service.
Precision Engineering Excellence
Our portable grinding equipment represents decades of engineering refinement. Each machine is designed specifically for in-situ crankshaft repair, featuring:
- Computer-controlled grinding with real-time feedback
- Self-aligning bearing systems for perfect centerline accuracy
- Diamond grinding wheels for superior surface finish
- Integrated measurement systems for continuous monitoring
- Portable design for deployment in confined engine rooms

Where We Apply It
Our in-place grinding technology serves a wide range of marine and industrial applications.
Marine Main Engines
Two-stroke and four-stroke main propulsion engines on all vessel types.
Auxiliary Engines
Generator sets, pumps, and other shipboard auxiliary machinery.
Power Plant Generators
Land-based power generation equipment and industrial engines.
Industrial Machinery
Heavy industrial equipment including compressors and large pumps.
Frequently Asked Questions
How does in-place grinding compare to traditional workshop repair?
Traditional repair requires removing the engine, transporting it to a facility, disassembly, repair, reassembly, and reinstallation—typically 4-8 weeks and $150,000-$500,000+. In-place grinding is completed on-site in 3-7 days for $30,000-$80,000.
What tolerances can be achieved with in-place grinding?
Our equipment achieves tolerances within 0.01mm (10 microns), meeting or exceeding OEM specifications. Surface finish quality equals or surpasses workshop machining.
Can any crankshaft damage be repaired in-place?
Most wear and minor damage can be repaired in-place. Severe damage like cracks or significant distortion may require traditional repair. Our engineers assess each case individually.
How quickly can you respond to emergencies?
Our emergency response teams can be on-site within 48-72 hours anywhere in the world. We maintain equipment and personnel in strategic locations globally.
Ready to Save Time & Money?
Contact our team for a free assessment and discover how in-place crankshaft grinding can benefit your operation.