Onsite Crankshaft Repair And In Situ Crankshaft Grinding Services – Comprehensive Guide

In the world of marine, industrial, and power generation engines, crankshaft damage can bring operations to a standstill. Fortunately, onsite crankshaft repair and in situ crankshaft grinding services have revolutionized the way industries handle such emergencies, eliminating the need for disassembly or transportation.

What Is Onsite Crankshaft Repair?

Onsite crankshaft repair (also known as crankshaft repair onsite or on site crankshaft repair) refers to the process of repairing crankshaft damage directly at the site of operation. Whether on a vessel, power plant, or offshore platform, this service ensures minimal downtime and cost-effective solutions. The combination of onsite crankshaft grinding and repairing results in extended crankshaft life and improved engine performance.

In Situ Crankshaft Grinding: The Modern Solution

In situ crankshaft grinding, also known as insitu crankshaft grinding, is a specialized process where the crankshaft is ground in its original position using a customized onsite crankshaft grinding machine. This technique ensures perfect alignment and eliminates the need for dismantling. Our team provides advanced onsite crankshaft grinding services, ensuring the crankpins and main journals are restored to the original manufacturer’s specifications.

Why Choose In Situ Crankshaft Repair Services?

Fast turnaround
Eliminates transportation costs
Precision results with portable machines
Minimal downtime and disruption
Environmentally friendly approach

Complete Onsite Crankshaft Grinding and Polishing

After grinding, the next critical step is crankshaft polishing. Our crankshaft polishing services use high-grade abrasives to enhance surface finish and increase longevity. The combination of onsite crankshaft grinding and polishing results in extended crankshaft life and improved engine performance.

Crankpin Repair and Insitu Machining Expertise

We specialize in onsite crankpin repair, which involves insitu machining of the crankpin to restore it to its standard size and finish. Our technicians use precision-engineered tools for insitu grinding of crankpins, ensuring accurate geometry and surface integrity.

With years of experience in insitu crankshaft machining, we have developed efficient solutions for all types of crankshaft issues, including scoring, taper wear, and journal ovality.

High-Precision In Situ Crankshaft Machining Services

In situ crankshaft machining or on site crankshaft machining is the ideal solution when engine components are too large or critical to be moved. We deploy skilled engineers with portable tools to provide in situ crankshaft machining with micron-level accuracy.

Our in situ crankshaft repair services are trusted worldwide for large engine applications including marine engines, diesel generators, and industrial compressors.

Why Our Services Stand Out

We utilize a state-of-the-art in situ crankshaft grinding machine that can handle crankshafts up to 700mm in diameter. Our mobile teams are available globally to deliver emergency onsite crankshaft grinding repair and insitu crankshaft grinding repair anytime, anywhere.

With our holistic approach, we cover every aspect:

Onsite crankshaft grinding and repair
Insitu crankshaft machining
Insitu machining & polishing of crankshaft
In situ machining and repair of crankshaft

When engine downtime is not an option, trust our expert in situ crankshaft repair services. With advanced tools, skilled technicians, and decades of experience, we offer the most reliable onsite crankshaft grinding, crankshaft repair on site, and crankpin repair solutions globally. For efficient, cost-effective, and precision onsite crankshaft grinding services, contact our team today and keep your engines running smoothly.

FAQ

1. What is the difference between onsite crankshaft repair and in situ crankshaft grinding?

Onsite crankshaft repair is a broader term that includes all types of crankshaft repair work done at the client’s location. In situ crankshaft grinding is a specific process within that service, involving precision grinding of the crankshaft journals or crankpins in their original position using portable machines.

2. Can crankshaft repair be done without removing the crankshaft from the engine?

Yes, our in situ crankshaft grinding and repair services allow us to perform repairs without dismantling the crankshaft from the engine, saving time and reducing costs.

3. How long does onsite crankshaft grinding usually take?

The duration depends on the extent of damage and the number of crankpins or journals to be repaired. Typically, a single crankpin can be ground within 24–30 hours, including inspection, setup, and final polishing.

4. What types of engines can you repair onsite (marine, power plant, etc.)?

We service marine engines, diesel power plant generators, offshore equipment, and large industrial compressors. Our technicians are experienced in handling all major engine makes and models.

5. What is the maximum diameter crankshaft you can grind onsite?

Our portable in situ crankshaft grinding machine can handle crankshafts up to 700 mm in diameter.

In the world of marine, industrial, and power generation engines, crankshaft damage can bring operations to a standstill. Fortunately, onsite crankshaft repair and in situ crankshaft grinding services have revolutionized the way industries handle such emergencies, eliminating the need for disassembly or transportation. What Is Onsite Crankshaft Repair? Onsite crankshaft repair (also known as crankshaft … Continue reading “Onsite Crankshaft Repair And In Situ Crankshaft Grinding Services – Comprehensive Guide”

In-Situ Crankshaft Grinding Machine | Onsite Crankshaft Machining | Onsite Crankshaft Grinding & Polishing Machine – RA Power Solutions

Crankshaft is a mechanical and important part of the engine that facilitates the performance of a conversion between reciprocating motion and rotational motion. The tolerances of the crankpin and main journal of the crankshaft are generally very close in order to have a longer life and continuous satisfactory performance of the Crankshaft without any damage. It is important that crankshaft tolerances are always maintained strictly as per original tolerances.

RA Power Solutions designs and manufactures insitu crankshaft grinding and polishing machine. The insitu crankshaft machine is of advanced technology which is designed to maintain the crank pin and main journal tolerances in terms of taper, ovality, and surface finish strictly as per the manufacturer’s specifications. There is no need of disassembly /removal of the crankshaft from the entablature. The onsite crankshaft grinding and polishing machine manufactured by RA Power Solutions is available in the range of 35 mm to 700 mm in terms of diameter.

The onsite crankshaft grinding machine is light in weight and can be easily taken to far from places all over the world. The onsite crankshaft grinding and polishing machine has the following features:

Technologically advanced crankshaft machining equipment in comparison to the conventional and old cage-type design, which is outdated.
Onsite crankshaft grinding and polishing machine does not require any reference of radius fillet for machining of the crankpin/main journal of the crankshaft.

Onsite crankshaft grinding and polishing machine frame is made out of titanium steel, which is robust and vibrationless.
With our latest onsite crankshaft grinder, machining of crankshaft up to 700 mm diameter can even be done while sailing the vessel, maintaining the close tolerance.
Onsite crankshaft grinding machine capable of maintaining close tolerance within 0.02 mm and with high surface finish far better than the international standards.
The insitu crankshaft grinding machine manufactured by RA Power Solutions can also be used for cylindrical shaft grinding and polishing and for the repair of the alternator, rotor shaft, pump shaft, intermediate shaft, mid-shaft, and turbine shaft.
Insitu crankshaft grinding and polishing equipment is easy to operate and maintain. It does not require any complicated day-to-day maintenance.
We are giving free training to the client’s technicians for the operation of this latest onsite crankshaft grinding equipment.

The cost of insitu crankshaft machining equipment is low and affordable. Highly recommended for large diesel power plants, shipping companies, and engine repair workshops. Insitu crankshaft grinding equipment is supplied in sturdy steel boxes that can be easily stored and taken from one site to another.

We have sold more than 70 crankshaft grinding machines all over the world including South America, UK, Italy, Nigeria, Singapore, the Philippines, Iran, Dubai, and various countries.

The author of this blog is Mr. Raj Shahani (Managing Director of Company). He has four decades of experience in the field of high-capacity engine repair and grinding of shaft. He has developed an onsite crankshaft grinding machine to make the grinding process easy and less time-consuming. With the development of grinding equipment, now companies can undertake grinding and repair of any rotary shaft themselves saving a huge amount of money and time.

For information regarding onsite crankshaft grinding & polishing machine, on site machining services, onsite crankshaft machining, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft is a mechanical and important part of the engine that facilitates the performance of a conversion between reciprocating motion and rotational motion. The tolerances of the crankpin and main journal of the crankshaft are generally very close in order to have a longer life and continuous satisfactory performance of the Crankshaft without any damage. … Continue reading “In-Situ Crankshaft Grinding Machine | Onsite Crankshaft Machining | Onsite Crankshaft Grinding & Polishing Machine – RA Power Solutions”

In Situ Crankshaft Grinding Machine | Onsite Crankshaft Grinding & Polishing Machine | Crankshaft Grinder – RA Power Solutions

The in situ crankshaft grinding and crankshaft repair machine is a unique invention and is of great assistance to the shipping companies as they can not remove the crankshaft from the vessel and send it to the workshop for repair. Again, the crankshaft grinding machines installed in the workshop are not an ideal solution due to its high cost and lack of know-how to operate. RA Power Solutions manufactures and exports onsite crankshaft grinding and repair machines having a range of 35 mm to 700 mm in terms of the diameter of crankpin and main journal of the crankshaft.

Crankshaft Grinding Machine of Bigger Diameter

Crankshaft Grinding Machine has the following features:

Onsite crankshaft grinding and polishing machine is compact, lightweight, and can be inserted from the inspection window of the engine block.
It is simple in design, easy to operate, and maintain
Crankshaft grinding and polishing machine body is manufactured out of titanium steel having the property of absorbing the vibrations. With the vibration or almost zero vibration machine can also be used for crankshaft grinding and crankshaft repair while sailing of the vessel.
- All parameters and tolerances as recommended by the engine manufacturer can be strictly maintained.
With the use of onsite crankshaft grinding and polishing machine, repair can be done in one setting. Thus saving the time.
This crankshaft grinding and polishing machine is manufactured with a pneumatic or electrical drive depending on the client’s requirement.
On Job training for the operation and maintenance of the crankshaft grinding machine is extended through our experienced technicians.
Crankshaft repair machine is supplied in a toolbox and can be transported all over the world.

**Onsite Crankshaft Grinding & Repair Machine**

We have sold more than 70 crankshaft grinding machines all over the world that includes shipping companies, leading repair workshops and power plants, etc.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in solving the major issues related to repair and overhauling of engines, grinding and repair of the crankshaft, and many more related to the high capacity engine.

For more information regarding onsite machining of crankshaft, in situ crankshaft grinding repair, crankshaft grinding machines, onsite crankshaft grinding, and crankshaft polishing equipment, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

**Repair of Crankpin by Crankshaft Grinding Machine**

**Onsite Grinding Machine for Small Diameter**

RA Power Solutions manufactures in situ crankshaft grinding and polishing machine. It is a revolutionary, lightweight, easy-to-operate, and compact crankshaft grinding and crankshaft polishing machine which can undertake the repair of crankpins up to the diameter of 700 mm without removing the crankshaft from the engine block. The in situ crankshaft grinding and crankshaft repair … Continue reading “In Situ Crankshaft Grinding Machine | Onsite Crankshaft Grinding & Polishing Machine | Crankshaft Grinder – RA Power Solutions”

Crankshaft Grinding | Crankshaft Repair | Crankpin Grinding – RA Power Solutions

RA Power Solutions having experience of more than four decades has emerged as a leader in providing services for onsite crankshaft grinding, crankshaft repair, crankshaft polishing, and crankpin reconditioning in Asia, the Middle East, South America, Parts of Europe, and many countries all over the world. The technology and process used for crankshaft repair are of the latest design, which ensures that the quality after the crankshaft grinding and repair is maintained strictly as per the engine manufacturer’s specifications and tolerances.

**Repair of Crankpin by Portable Crankshaft Grinding Machine on Vessel**

The combination of the latest design of onsite crankshaft grinding machine possessed by RA Power Solutions and experienced technicians who have collectively repaired more than 10,000 crankshafts gives confidence to our clients for successful repairs of crankshaft once the job is entrusted to RA Power Solutions.

Following are the main abnormalities observed in the crankshaft which require crankshaft repair:

Bearing line marks and development of rough surface.
Damage of radius fillet, lubricating oil hole due to an accident.
Development of taper and ovality beyond the limits specified by the engine manufacturers.
Increase in hardness beyond the permissible limit due to overheating.
Cracks were observed on crank pins and the main journal.
Presence of watermarks and rough surface.

Crankshaft Grinding and Repair process followed by RA Power Solutions:

Dimensional inspection of the crankshaft in detail is undertaken by RA Power technicians
A hardness check of the damaged CR Pin or main journal of the Crankshaft is conducted.
Crack detection by MPI, dye penetrant, or ultrasonic crack detection is done.
Visual inspection

**Inspection of Crankpin Under Process**

**Inspection of Crankpin Before Grinding**

The inspection report in detail is studied by our senior technicians and the necessary planning for onsite repair is done. The onsite crankshaft grinding and polishing is undertaken by RA Power in the shortest possible time.

We also possess portable onsite crankshaft grinding machines which have minimum vibrations. This facilitates us to undertake crankshaft grinding and repair even while the vessel is sailing on the high seas.

**Grinding & Polishing of Crankshaft by RA Power Solutions**

After crankshaft grinding and repair, the final inspection reports are prepared by our technicians and submitted to clients for their records. RA Power also extends services for repair crankshaft, crankshaft refurbishment, engine overhaul and maintenance, metal stitching, rebabbitting of bearings, spares, etc.

**Crankpin After Grinding on Board a Vessel**

The author is Mr. Raj Shahani Managing Director of RA Power Solutions having experience of almost four decades of working on high-capacity diesel engines, crankshaft, turbines, and rotary equipment.

For more information regarding crankshaft polishing, grinding of crankshaft, onsite inspection of crankshaft, crankshaft grinding and repair, onsite crankshaft grinding and polishing services, and crankpin grinding, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

RA Power Solutions having experience of more than four decades has emerged as a leader in providing services for onsite crankshaft grinding, crankshaft repair, crankshaft polishing, and crankpin reconditioning in Asia, the Middle East, South America, Parts of Europe, and many countries all over the world. The technology and process used for crankshaft repair are … Continue reading “Crankshaft Grinding | Crankshaft Repair | Crankpin Grinding – RA Power Solutions”

Onsite Crankshaft Grinding Machine for Crankshaft Repair – RA Power Solutions

RA Power Solutions, with 4 decades of experience, has now introduced an onsite crankshaft grinding machine which is portable and can undertake crankshaft machining, crankshaft grinding, and crankshaft repair onsite.

Grinding of Crankpin using Onsite Crankshaft Grinding Machine

Now there is no need to remove the crankshaft from the engine block and send it to the workshop.

The crankshaft grinding machine has the following features:

I) The crankshaft grinding machine is introduced by RA Power Solutions, having experience of 4 decades in crankshaft repair.

II) After extensive trials and experience, we have introduced the machine in the open market. It is now available for shipping companies, engine repair workshops, power plants, and more.

III) The onsite crankshaft grinding and polishing machine is of the latest design, having minimum vibrations during operation. An onsite crankshaft grinding machine can be used while sailing the vessel.

IV) Tolerances achieved after crankshaft grinding and crankshaft polishing are far better than the manufacturer’s specifications. This is proven as repairs executed are class approved.

In case of emergency, we operate the onsite crankshaft grinding and polishing round the clock. The crankshaft grinding and polishing machine is easy to operate and job training is provided. This machine is supplied ready to use and complete in all respect. More than 100 machines supplied all over the world.

Crankshaft Grinding Machine Packed in Steel Box for Dispatch

For more information on crankshaft repair and crankshaft grinding services, contact us by email at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs:

1. What is an onsite crankshaft grinding machine?

It is a portable, in-situ machine designed to grind and repair crankpins and main journals without removing the crankshaft from the engine block.

2. What sizes of crankshafts can RA Power Solutions repair onsite?

We can repair crankshafts with diameters up to 700 mm directly at the vessel, power plant, or industrial site.

3. Can the onsite crankshaft grinding machine be used while the vessel is sailing?

Yes, our machine is lightweight, low-vibration, and capable of operating during sailing, reducing downtime.

4. What are the benefits of using a portable crankshaft grinding machine?

It eliminates the need to dismantle the engine, saves time and money, and ensures repairs meet OEM tolerances.

5. Does RA Power Solutions provide training for operating the machine?

Yes, we provide free onsite training for operators along with 24/7 support and worldwide service.

RA Power Solutions, with 4 decades of experience, has now introduced an onsite crankshaft grinding machine which is portable and can undertake crankshaft machining, crankshaft grinding, and crankshaft repair onsite. Now there is no need to remove the crankshaft from the engine block and send it to the workshop. The crankshaft grinding machine has the following … Continue reading “Onsite Crankshaft Grinding Machine for Crankshaft Repair – RA Power Solutions”

Crankshaft Repair at Low Cost In Bangladesh- RA Power Solutions

Crankshaft repair is required in case of following observations:

I) Development of taper and ovality due to continuous running.

II) Seizure of bearing, increase in hardness, and development of crack.

III) Loss of alignment of crankshaft or change in web deflection of crankshaft and many more reasons.

**Damaged Crank Pin of MAN Diesel Engine**

RA Power Solutions Pvt. Ltd. undertakes crankshaft repair in Bangladesh. We have a team of experienced technicians who undertake crankshaft repair onsite. These days, there is no need of remove the crankshaft from the Engine block and send it to the workshop for crankshaft repair.

**Crack Detection of Crankpin Before Grinding**

RA Power Solutions undertakes crankshaft repair, crankshaft grinding, and crankshaft polishing onsite without the removal of the crankshaft from the engine block. The onsite repair of crankshaft not only reduces the downtime but saves considerable costs in terms of removal of crankshaft, packing, transportation, etc. The sending of crankshaft to the workshop now is outdated.

**Crankshaft Repair on Board the Vessel**

RA Power Solutions have facility to undertake onsite crankshaft repair from 50 mm to 700 mm in diameter. Having more than 44 years of experience, we have highly skilled in-house technicians to execute crankshaft repair. We are the most respected and cost-effective company in the Asian region. We also manufacture crankshaft repair machines and crankshaft grinding and polishing machine which is lightweight and easy to operate.

**Crankshaft Grinding of Damaged Crankpin on Board the Vessel**

The range of machine is from 50 mm to 700 mm which is reasonably priced, and we have sold more than 63 machines all over the world. Author of this blog is Raj Shahani, Managing Director of RA Power Solutions Pvt. Ltd. having experience of more than 44 years.

**Crack Detection of Crankpin After Grinding**

Company deals in onsite crankshaft grinding, crankshaft repair, rebabbitting of bearings, metal stitching/metal locking of cast iron, connecting rod repair, etc.

We have been regularly executing onsite crankshaft repair in Bangladesh, Madagascar, Oman, Qatar, Philippines, Bahrain, Sri Lanka, Myanmar, Turkey, Nigeria, Greece, Saudi Arabia, UK, Dubai, Malta, Cyprus, Singapore, Malaysia, Colombia, Iraq, Iran, Dubai, Antigua and Barbuda, Belize, Dominica, Dominican Republic, Netherlands, Belgium South America, Jordan, Ecuador, Singapore, Indonesia, Brazil, Scotland, Italy, UK, South Africa, etc.

For more details contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383 for more information.

Crankshaft repair is required in case of following observations: I) Development of taper and ovality due to continuous running. II) Seizure of bearing, increase in hardness, and development of crack. III) Loss of alignment of crankshaft or change in web deflection of crankshaft and many more reasons. RA Power Solutions Pvt. Ltd. undertakes crankshaft repair … Continue reading “Crankshaft Repair at Low Cost In Bangladesh- RA Power Solutions”

Crankshaft Repair While Sailing – RA Power Solutions

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 over four decades in 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 .

Crankpin Ready After Grinding and Polishing

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.

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”