RA Power Solutions is the first company to offer crankshaft grinding and polishing services while a vessel is sailing, using onboard, vibration-free portable equipment. This enables precision repairs without removing the crankshaft from the engine block, saving valuable time and reducing costs.
Case Study: MAN 6L32/40 Repair at Sea
- Engine Model: MAN 6L 32/40, crankpin diameter 290 mm, bearing width 130 mm
- Vessel sailed from Savannah (USA) to Panama during repair
- All six crankpins showed excessive ovality (0.10–0.25 mm), well above the 0.03 mm tolerance
- Hardness tests fell within acceptable limits; MPI crack checks revealed no anomalies
- Technicians ground five pins by 0.5 mm and one by 2.0 mm due to localized damage
- Post-repair, RA Power specialists assisted ship’s crew with connecting rod calibration
Advantages of RA Power’s Onboard Crankshaft Repair
- Utilizes latest-design portable grinding equipment, capable of close-tolerance machining.
- Enables crankshaft repair during sailing, minimizing vessel downtime and eliminating overhaul costs.
- Offers 24/7 emergency service—technicians have valid seaman documentation and US visas for rapid deployment.
- Provides practical, experienced advice based on nearly five decades in in situ crankshaft repair, avoiding rejection or replacement.
- Repairs damaged radius fillets and journals at no extra cost, offering one of the lowest-cost solutions in the industry .
Why Choose RA Power Solutions?
- Speed & efficiency: finish inspections and repairs onboard in under 48 hours.
- Lower costs: no need for crane lifts, dry docking, or workshop transport.
- Precision & reliability: strict adherence to manufacturer tolerances.
- 24/7 availability: emergency interventions worldwide with minimal lead time.
- Decades of trust: thousands of crankshafts repaired successfully across multiple continents .
We also have engine crankpin bearings available in our stock for various engine models from Wärtsilä, MAN B&W, Sulzer, Yanmar, Daihatsu, MAK, Caterpillar, Cummins, Deutz, Mitsubishi, Allen, Himsen, and Niigata.
For more information about our services for grinding of crankshaft, crankshaft grinding and polishing services, crankshaft repair, and restoring crankshaft of compressor, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
FAQs
1. Can a crankshaft be repaired while a vessel is sailing?
Yes, crankshaft grinding and polishing can be done under sail with portable vibration-free equipment. Crankpins and journals that are worn or damaged can be repaired without removing the crankshaft from the engine block or putting the vessel in dry dock.
2. What are the benefits of crankshaft repair while sailing?
Big pluses are less time in the yard, lower repair costs, and no need for dry docking or crane lifting. Depending on working conditions and safety requirements, the crankshaft can be inspected, ground, polished, and restored on board the vessel in her voyage.
3. Can ovality and localized crankpin damage be repaired onboard?
Yeah. Excessive crankpin ovality, wear, scoring, and localized damage can often be rectified by precision grinding. The crankpin is checked for hardness, cracks, and manufacturer tolerances. This determines how much material needs to be removed.
4. How long does onboard crankshaft grinding and polishing take?
Depending on the number of crankpins, extent of damage, required undersize, and accessibility, the inspection and repair can often be completed within 48 hours. Emergency crankshaft repairs are available while the vessel is underway.
5. Is crack detection performed before crankshaft grinding?
Yes. Crankpins and journals should be checked for cracks before and after machining. Magnetic particle inspection (MPI) or dye penetrant testing can be performed depending upon the material of the crankshaft and the requirements for inspection. Hardness testing and dimensional measurements are also done to ensure that the crankshaft is within acceptable limits.
RA Power Solutions is the first company to offer crankshaft grinding and polishing services while a vessel is sailing, using onboard, vibration-free portable equipment. This enables precision repairs without removing the crankshaft from the engine block, saving valuable time and reducing costs. Case Study: MAN 6L32/40 Repair at Sea Advantages of RA Power’s Onboard Crankshaft … Continue reading “Crankshaft Repair While Sailing – RA Power Solutions”