Crankshaft Repair Archives - Connecting Rod Repair

On Site Crankshaft Repair of HIMSEN HYUNDAI 6H 17/28 | Turkey

RA Power Solutions successfully repaired the Crankshaft of Himsen Hyundai 6H17/28 engine at MIP Mersin, Turkey. The engine, owned by an Italian company, experienced a major breakdown due to a failure in one of its auxiliary engines.

RA Power Solutions promptly deployed two skilled technicians equipped with onsite crankshaft grinding tools. The repair was efficiently conducted while the vessel remained anchored at MIP Mersin, ensuring minimal downtime and reliable restoration of the engine.

Following are the major Engine and Crankpin details:

S. No.	Engine and Crankpin Details
1.	Engine Make	HIMSEN HYUNDAI
2.	Engine Model	6H 17/28
3.	Crankpin Diameter Standard	175.00MM
4.	Crankpin Bearing Width	60.00 MM
5.	Place of Execution of Grinding of Crankpin	MIP Mersin, Turkey
6.	Name of Shipping Company	Reputed Company from Italy

Key Observations of the Crankshaft:

Visual Inspection Findings:
(i) The breakdown was caused by the failure of the lubricating oil pump, resulting in damage to all connecting rod bearings.
(ii) Bearing material was embedded on all six crankpins and was meticulously removed.
(iii) Dimensional inspection conducted after polishing revealed taper and ovality measurements ranging from 0.22 mm to 0.86 mm.

MPI Test Before Crankshaft Grinidng and Repair

Image Showing Before Grinding and Polishing

The Dimensional Inspection Report of Six (6) Number Crankpins of HIMSEN HYUNDAI 6H 17/28:

SIZE OF CR PINS BEFORE REPAIR
	A	Aa	C	Cc	B	Bb	Min	STD	Ovality
CR-1	174.74	174.85	174.62	174.73	174.66	174.88	174.62	175.00	0.38MM
CR-2	174.83	174.92	174.80	174.78	174.83	174.93	174.78	175.00	0.22MM
CR-3	174.70	174.90	174.55	174.69	174.48	174.54	174.48	175.00	0.52MM
CR-4	174.78	174.88	174.79	174.72	174.79	174.92	174.72	175.00	0.28MM
CR-5	174.78	174.88	174.76	174.92	174.72	174.78	174.72	175.00	0.28MM
CR-6	174.22	174.80	174.14	174.78	174.37	174.85	174.14	175.00	0.86MM

(iv) Hardness testing indicated acceptable levels overall, with minor exceptions in a few areas, which were assessed as non-critical.
(vi) Magnetic Particle Inspection (MPI) revealed minor hairline cracks, while all other parameters remained within acceptable limits.

CR Pin Before Grinding of HIMSEN HYUNDAI 6H 17/28

Actions Taken by RA Power Solutions Technicians:

1. The grinding of all six (6) crankpins was undertaken by our insitu crankshaft grinding machine.
2. Three (3) number of crankpins diameter was reduced by 1.00 MM and the final size was maintained as 174.00 MM.
3. Three (3) number of crankpins diameter was reduced by 1.50 MM and the final size was maintained at 173.50 MM.

Final Report After Grinding is Pasted Below:

SIZE OF CR PINS AFTER REPAIR
	A	Aa	C	Cc	B	Bb	Min	U/S	Ovality
CR-1	173.48	173.49	173.49	173.48	173.50	173.50	173.48	173.50	0.02MM
CR-2	173.98	173.99	174.00	173.99	173.98	173.99	173.98	174.00	0.02MM
CR-3	173.49	173.50	173.50	173.48	173.49	173.50	173.48	173.50	0.02MM
CR-4	173.98	173.99	173.98	174.00	173.98	174.00	173.98	174.00	0.02MM
CR-5	173.99	173.99	173.98	174.00	173.98	173.99	173.98	174.00	0.02MM
CR-6	173.48	173.49	173.49	173.50	173.50	173.48	173.48	173.50	0.02MM

We ensure all six crankpins are maintained with a stringent tolerance of 0.02 mm, delivering exceptional accuracy and optimal performance in every project.

Global Expertise in Crankshaft Repair
RA Power Solutions is a global leader in onsite crankshaft repair and grinding services. With extensive experience, we have successfully completed projects across the globe, including Dubai, Fujairah, Qatar, Saudi Arabia, Oman, Iraq, Togo, Malta, Freetown, Egypt, Malaysia, Iran, Indonesia, Vietnam, Jordan, and many other locations.

CR Pin Grinding of HIMSEN HYUNDAI — **CR Pin After Grinding of HIMSEN HYUNDAI**

Our highly skilled technicians are available 24/7 and can be deployed at short notice. Many of our team members hold valid US visas, allowing us to serve clients in South America, the Caribbean, and other regions efficiently.

Get in Touch for Professional Crankshaft Services:
Email: rajshahani@rapowersolutions.com | info@rapowersolutions.com
Phone: +91 9582647131 | +91 9810012383.

RA Power Solutions successfully repaired the Crankshaft of Himsen Hyundai 6H17/28 engine at MIP Mersin, Turkey. The engine, owned by an Italian company, experienced a major breakdown due to a failure in one of its auxiliary engines. RA Power Solutions promptly deployed two skilled technicians equipped with onsite crankshaft grinding tools. The repair was efficiently … Continue reading “On Site Crankshaft Repair of HIMSEN HYUNDAI 6H 17/28 | Turkey”

Peroni Pompe Crankshaft Repair | Save Crankshaft From Rejection

RA Power Solutions has recently undertaken onsite repair of the crankshaft of Peroni pump manufactured and supplied by Peroni Pompe Italy. The crankshaft has three number of crankpin with a standard diameter of 215 mm, developed taper/ovality, and a rough surface. This problem caused frequent damage to the crankpin bearings, leading to major shutdown of the plant and heavy financial losses for the company.

**Onsite Machining Of Peroni Pompe Italy Crankshaft**

The crankshaft of Peroni Pump manufactured by Peroni Pompe Italy, was inspected by RA Power Solutions technicians for the following parameters:

Dimensional inspection of crankpin for taper & ovality. The ovality ranging from 0.06 mm to 0.18 mm was observed.
The MPI test was conducted with a high-intensity Magnaflux torch and no abnormality was observed. Few superficial hairline cracks were observed, which may be due to rubbing of the crankshaft bearing steel lining with the crankpin diameter.
The hardness of the crankpin was observed within limits.
On visual inspection, bearing line marks and a rough surface was observed.

**Grinding & Polishing Of Crankshaft Of Peroni Pompe Italy**

Action Taken by RA Power Solutions for Repair of Peroni Pompe Crankshaft:

It was jointly decided with the client to undertake grinding of all three crankpins to the first step size of 0.5mm.
The grinding of crankpin was executed onsite, and the final diameter was maintained between 214.48 and 214.50 mm.
We are giving below the dimensions of the crankpin before and after the grinding job was executed by RA Power Solutions.

**Insitu Machining & Polishing Of Crankshaft Of Peroni Pompe Italy**

Size of CR Journal

	A	Aa	C	Cc	B	Bb	Min	Max	Ovality
CR-1 Before	214.95	214.96	214.95	214.92	214.88	214.88	214.88	214.96	0.08mm
CR-1 After	214.48	214.48	214.49	214.48	214.49	214.50	214.48	214.50	0.02mm
CR-2 Before	214.88	214.89	214.92	214.94	214.88	214.93	214.88	214.94	0.06mm
CR-2 After	214.48	214.50	214.49	214.48	214.50	214.49	214.48	214.50	0.02mm
CR-3 Before	214.69	214.84	214.87	214.83	214.80	214.81	214.69	214.87	0.18mm
CR-3 After	214.49	214.50	214.50	214.49	214.49	214.48	214.48	214.50	0.02mm

Undersize Crankpin Bearing for Peroni Pompe

The crankpin bearings, undersized by 0.5 mm, were manufactured by RA Power Solutions and supplied to the client. The Peroni Pompe was commissioned, and the performance of the crankshaft and bearings was found satisfactory.

RA Power Solutions, with over 43 years of experience, specializes in onsite crankshaft repair for engines, compressors, pumps, forging hammers, and all rotating equipment. Our technicians have valid visas and can travel all over the world with the in-situ grinding machine to execute the repairs.

**Insitu Grinding & Polishing Of Peroni Pompe Italy**

The author is Mr. Raj Shahani, Managing Director of the company. He has 43 years of experience in grinding crankshafts, polishing crankshafts, and all services related to engine and supporting equipment repair. He has designed and developed a portable crankshaft grinding machine to save time and money.

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

RA Power Solutions has recently undertaken onsite repair of the crankshaft of Peroni pump manufactured and supplied by Peroni Pompe Italy. The crankshaft has three number of crankpin with a standard diameter of 215 mm, developed taper/ovality, and a rough surface. This problem caused frequent damage to the crankpin bearings, leading to major shutdown of the plant … Continue reading “Peroni Pompe Crankshaft Repair | Save Crankshaft From Rejection”

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 have now introduced 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 engine block and sending it to the workshop. Crankshaft grinding machine has 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, the machine is now introduced in the open market for the benefit of shipping companies, engine repair workshops, power plants, etc.

III) The onsite crankshaft grinding and polishing machine is of latest design, having minimum vibrations during operation. 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, this onsite crankshaft grinding and polishing can be operated round the clock. The onsite 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 70 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.

RA Power Solutions with 4 decades of experience have now introduced 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 engine block and sending it to the workshop. Crankshaft grinding machine has following features: I) The crankshaft … Continue reading “Onsite Crankshaft Grinding Machine for Crankshaft Repair – RA Power Solutions”

Crankshaft Repair at Low Cost – 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. We have team of experienced technicians who undertake crankshaft repair onsite. These days, there is no need of removing the crankshaft from the Engine block and send it to workshop for crankshaft repair.

**Crack Detection of Crankpin Before Grinding**

RA Power Solutions undertakes crankshaft repair, crankshaft grinding and crankshaft polishing onsite without removal of crankshaft from the engine block. The onsite repair of crankshaft not only reduces the downtime but saves considerable cost 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 37 years of experience, we have highly skilled in house technicians to execute crankshaft repair. We are most respected and cost-effective company in Asian region. We also manufacture crankshaft repair machine/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 36 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.

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 – RA Power Solutions”

Crankshaft Repair While Sailing – RA Power Solutions

Crankshaft repair by grinding and polishing is now possible while vessel is on move. RA Power Solutions Pvt. Ltd. is the first company to offer crankshaft repair services while vessel is sailing by onsite portable crankshaft grinding equipment which is taken on board the vessel. The crankshaft repair is undertaken by a vibration-free Crankshaft grinding machine without removing the crankshaft from the engine block thus saving time and cost.

RA Power Solutions Pvt. Ltd. undertakes onsite crankshaft grinding and polishing on board the vessel while sailing up to 700 mm diameter.

RA Power Solutions Pvt. Ltd. has recently undertaken grinding of all 6 CR pins of MAN B&W STX 6L23/30H while sailing of the vessel between ports of Malaysia and Indonesia. The crankpins were damaged due to a lack of lubrication oil and all the pins were undersized by 0.5 mm. The tolerances after grinding and polishing have been maintained as per the manufacturer’s requirements.

RA Power Solutions Pvt. Ltd. has designed vibration-free onsite crankshaft grinding and crankshaft polishing equipment by which it is possible to execute crankshaft repair while the ship is on move. This saves time and keeps the vessel moving. Crack repair of engine block, cylinder heads, casing, and all broken castings on board a vessel is possible while sailing. We are the first company to introduce these services.

For more information about our services for grinding of crankshaft, crankshaft grinding, 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.

Onsite Crankshaft Grinding Machine from Engine Block

Crankpin Ready After Grinding and Polishing

Crankshaft Polishing in Process by Crankshaft Polishing Machine

Crankshaft repair by grinding and polishing is now possible while vessel is on move. RA Power Solutions Pvt. Ltd. is the first company to offer crankshaft repair services while vessel is sailing by onsite portable crankshaft grinding equipment which is taken on board the vessel. The crankshaft repair is undertaken by a vibration-free Crankshaft grinding … Continue reading “Crankshaft Repair While Sailing – RA Power Solutions”