When a critical engine—like MAK, MAN, Daihatsu, Wartsila, Caterpillar, Cummins, Yanmar, Hyundai Himsen, or MAN B&W—starts showing wear on its crankshaft, downtime isn’t an option. Every minute the vessel or plant is offline, you’re losing money.

That’s exactly where R A Power Solutions comes in.

Instead of dismantling the entire engine and shipping the crankshaft to a workshop, our team travels to your site—anywhere in the world—and performs in situ crankshaft grinding and polishing right inside the engine block.

Less downtime. Less cost. No heavy logistics.

What is in situ crankshaft grinding?

In situ crankshaft grinding is the process of repairing and restoring crankpins and main journals directly on the engine, without removing the crankshaft.

We use state-of-the-art portable grinding and polishing machines designed by our in-house R&D team for precision repairs.

Key benefits:

• No need to remove or transport the crankshaft
• No dismantling of major engine components
• Fast turnaround

Massive cost savings

Why It Matters for Marine & Industrial Engines

Whether it’s a ship sailing across continents or a power plant supporting industrial operations, crankshaft failure can bring everything to a halt.

That downtime translates to:

• Delay charges
• Production loss
• Unplanned repair costs

R A Power Solutions specializes in repairing crankshafts of MAK, MAN, Daihatsu, Wartsila, Caterpillar, Cummins, and similar large engines installed in:

• Marine vessels (bulk carriers, LNG carriers, tankers)
• Offshore platforms
• Power plants
• Cement and mining industries

Our expertise and equipment allow us to restore crankshafts to OEM tolerances without stripping the entire engine.

On Site vs Off Site Grinding: The Advantage of R A Power Solutions

On site crankshaft grinding machine is a specialized tool for making, repairing, and reconditioning crankshafts. The crankshaft is the engine’s backbone, transforming piston motion into rotation; hence, its accuracy is vital. Crankshafts may develop surface imperfections, wear, or scoring over time. Our machine ensures engines perform dependably and effectively by restoring them to precise proportions with a flawless finish.

Important Features:

• High-precision grinding produces a finish that satisfies international standards while maintaining tight tolerances of less than 10 microns.
• Lightweight and portable, it may be brought straight to the location for onsite crankshaft maintenance.
• Simple to Use: Made to be low maintenance and hassle-free, this device is appropriate for both newly trained and experienced technicians.
• Numerous Uses: Ideal for heavy industrial equipment, power plants, and marine engines, it does not require disassembly.

Uses:

• Marine Industry: In addition, large ship engines can be repaired onsite without removal, significantly reducing downtime and operational costs.
• Power Plants: Similarly, it is ideal for repairing crankshafts of diesel generators, ensuring efficient performance and uninterrupted power supply.
• Heavy Engineering: Furthermore, it is highly suitable for industrial machinery used in mining, construction, and other heavy-duty applications.

Advantages

• Saving money by restoring crankshafts rather than replacing them with expensive ones.
• Longer Engine Life: Prevents wear and prolongs engine life.
• The benefit of onsite repair is that it eliminates the need to move large engines to workshops.
• Improved Performance: Guarantees reduced friction, reduced fuel consumption, and smoother operation.
• Time-efficient: Restoration can be completed more quickly than waiting for new parts.

Specific Qualities

• Engineering machinery with precise construction.
• The machinery is designed to manage the crankshafts of both large marine engines and small automobiles.
• Guarantees outstanding dimensional accuracy and surface finish.
• Moreover, the machinery comes with practical instruction, fostering confidence in operators after just one week of practice.

Worldwide Presence

RA Power Solutions has successfully supplied over 70 crankshaft grinding and polishing machines worldwide. The following regions rely on our equipment:

• Asia: Bangladesh, Sri Lanka, Singapore, Indonesia, Saudi Arabia, the United Arab Emirates, and India
• Africa: Burkina Faso, Tanzania, Ghana, Kenya, Egypt, South Africa, and Nigeria
• Europe: Greece, Turkey, Italy, Germany, the United Kingdom, and the Netherlands
• Americas: Canada, Mexico, Brazil, and the USA
• Oceania: New Zealand and Australia
• We continue to cut costs, minimize downtime, and increase profitability for shipping companies, repair shops, power plants, and heavy industries, all while expanding our global presence.

For more information regarding the on site crankshaft grinding machine, please email us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs

What is Onsite Crankshaft Grinding?

Onsite crankshaft grinding is a specialized process of repairing damaged or worn crankshafts without removing them from the engine block. Instead of sending the engine or crankshaft to a distant workshop, technicians bring portable equipment directly to the engine’s location—be it on a ship, power plant, or remote industrial site.

This method uses state-of-the-art orbital grinding tools that ensure the crankshaft journals are repaired with micron-level precision while the crankshaft remains in situ.

Importance of Crankshaft Integrity in Marine and Industrial Engines

Crankshafts are the backbone of large diesel engines. They convert linear piston motion into rotational energy, powering everything from cargo vessels to power plants. When a crankshaft gets damaged, it directly affects engine balance, efficiency, and safety.

Effects of Crankshaft Damage

• Loss of engine power
• Vibration and misalignment
• Increased fuel consumption
• Risk of catastrophic engine failure

Common Causes of Crankshaft Wear

• Oil starvation
• Bearing failure
• Overloading
• Misalignment
• Material fatigue over time

Traditional Workshop Repair vs. Onsite Grinding

Limitations of Workshop Repairs

• Disassembly and reassembly risks
• High logistical costs for large engine parts
• Longer downtime due to transport and scheduling
• Potential exposure to environmental elements during transit

Cost and Time Benefits of Onsite Grinding

• Up to 70% time is saved by avoiding disassembly
• Huge reduction in transportation and crane charges
• Same precision as in controlled workshop environments

Seven Powerful Benefits of Onsite Crankshaft Grinding

1. Minimizes Downtime—Time is money, especially in industries like shipping and power generation. Onsite grinding cuts downtime drastically by eliminating disassembly, transport, and reinstallation.
2. Reduces Transportation Costs—Moving a large marine engine crankshaft can cost thousands of dollars. Onsite services eliminate this cost.
3. High-Precision Repair Onboard—With orbital grinding technology and laser alignment tools, onsite grinding achieves tolerances as low as 10 microns—comparable to workshop standards.
4. Environmentally Friendly Operations—No fuel-intensive transport or waste-producing disassembly means a significantly lower carbon footprint.
5. Restores Original Crankshaft Parameters—Advanced grinding tools restore crankpins and main journals to original diameters and surface finishes.
6. Avoids Risk of Engine Reassembly Errors—Every time an engine is dismantled and reassembled, there’s a risk of human error. Onsite repair eliminates this risk.
7. Enables Emergency Repairs in Remote Locations—Onsite services can be deployed anywhere in the world, including offshore rigs or remote deserts, minimizing mission-critical downtimes.

Technologies and Tools Used in Onsite Grinding

• Portable crankshaft grinding machines
• Non-contact micrometers
• Vibration analyzers
• Hardness testers
• Surface finish comparators
• Alignment lasers

These tools ensure the job meets OEM standards regardless of the location

Step-by-Step Process of Onsite Crankshaft Grinding

1. Initial Inspection
2. Hardness & Crack Detection
3. Journal Alignment Check
4. Setup of Portable Equipment
5. Orbital Grinding Execution
6. Surface Finish Measurement
7. Final Alignment and Calibration

E-E-A-T in Crankshaft Grinding Services

Google’s E-E-A-T (Experience, Expertise, Authoritativeness, and Trustworthiness) applies here too. High-quality crankshaft service providers should demonstrate:

Experience: Decades of fieldwork on varied engines

Expertise: Skilled technicians trained by OEMs

Authoritativeness: ISO/ABS certifications

Trustworthiness: Transparent reports, case studies, and client reviews

Conclusion

Insitu crankshaft grinding isn’t just a convenient service— it’s a game-changer for marine and industrial engines. It combines cost efficiency, precision, and speed, especially when downtime isn’t an option. Choosing the right service provider ensures your engine is back to work with OEM-grade performance, without ever leaving its location.

For any information, please email us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

RA Power Solutions offers the In Situ Crankshaft Grinding Machine, designed using advanced production techniques and continuously improved through years of field experience. To begin with, our machines are developed and tested according to international quality standards, ensuring high performance and reliability.

With extensive experience across a wide range of industries, we specialize in designing and manufacturing custom-built, portable, onsite crankshaft grinding and repairing machines. Additionally, these machines are ideal when only one or two crank pins are damaged, eliminating the need to dismantle and ship the entire crankshaft to a distant workshop.

Our in situ crankshaft grinding machine is suitable for crank pins with diameters ranging from 50 mm to 600 mm, and more importantly, it can perform grinding and polishing without removing the crankshaft from the engine block. Furthermore, thanks to its compact and lightweight design, the machine can easily be inserted through the engine’s inspection window. Consequently, it is ideal for onsite applications where space is limited and downtime must be minimized.