crankpin grinding Archives - RA Power Solutions

Wartsila 4L20 Crankshaft Repair on Board a Vessel

The Wartsila 4L20 crankshaft was repaired by RA Power Solutions technicians on board a vessel while sailing. The vessel is owned by a reputed shipping company based in kuwait. Due to the serious accident the crankshaft was removed from the engine block as the crankcase of Wartsila 4L20 was also badly damaged beyond repair.

The main dimensions of the crankshaft of Wartsila 4L20 are as follows:

S. NO	Crankshaft Details
1.	Engine Make	Wartsila
2.	Engine Model	4L20
3.	Crank pin Diameter Standard	180 mm
4.	Crankpin Bearing Width	71 mm
5.	Main journal diameter	210 mm
6.	Place of execution of crankshaft repair	Sailing from Paradip Port to Ennore Port India

Action taken by RA Power Solutions technicians to repair the Wartsila 4L20 Crankshaft

On arrival our technicians observed that the damaged crankshaft was lying on the floor. A design of v block was made and V block was manufactured on the vessel. This was done to do the inspection & grinding of the crankshaft as it was aleady removed from the engine block.

RA Power has a tooling by which crankpin grinding can be done without removing the crankshaft from the block

All four crankpins were inspected. The maximum ovality of 0.17 mm was observed.

Inspection report is pasted below:

Uneven surface, bearings line marks and pitting marks were observed on all crankpins.
All main journals were also dimensionally checked and were observed to be within limits. The standard diameter of the main journal is 210 mm.
As a matter of routine hardness test, crack detection test, surface finish test etc was done and observed within limits.
The grinding of damaged crankpins was done and all the crankpin were undersized by 0.50 mm only. The final size of the crankpin was maintained between 179.48 to 179.50 mm.

**Wartsila 4L20 crankshaft grinding on V-BLOCK**

**Crack detection test of Wartsila 4L20 Crankshaft before grinding**

The final diameter maintained after grinding of crankpins is pasted below:

**Crankpin Polishing after inspection of crankshaft**

The above job was done while sailing of the vessel from Paradip port to Ennore port India and there was no need of stopping the vessel.

We have been regularly executing the repairs in Madagascar, Oman, Qatar, Philippines, Bahrain, Srilanka, Bangladesh, Myanmar, Turkey, Nigeria, Greece, Saudi Arabia, UK, Dubai, Malta, Cyprus, Singapore, Malaysia, Colombia, Indonesia, Hong Kong, Spain, Netherlands, Dubai, Portugal, Estonia, Morocco, Belgium, Vietnam, Canada, Jordan, Libya, Kuwait, Egypt, Morocco, Yemen, Bahrain, Tunisia, Sudan, Oman, Algeria, UAE, Iraq.

**Wartsila 4L20 Engine Crank pin after Grinding**

**Wartsila 4L20 crankpin after grinding & polishing**

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

Crankshaft Grinding | Crankshaft Repair Services

RA Power Solutions undertakes onsite crankshaft grinding and crankshaft repair for the diameter ranging from 30 mm to 700 mm.

The small diameter crankshaft is repaired on site without removing the crankshaft from the block. These services are of great use for the engines which are installed in construction-related equipment, compressors, and diesel-driven equipment operating in remote areas.

Our crankshaft repair services of crankshaft grinding and crankshaft repair are proven as we have been extending these services all over the world for the last forty years.

The main feature of onsite crankshaft grinding, onsite crankshaft repair, crankshaft polishing are as following:

RA Power design and manufactures on site crankshaft grinding equipment as per the site requirement and space constraints Hence there is no compromise with the quality after the repair of the crankshaft.
All the parameters of the crankshaft grinding are maintained strictly as per the manufacturer’s recommendations and tolerances. An inspection report in detail is submitted to the client.
In RA Power Solutions, we give great importance to the calibration of the crankshaft and inspection in detail by experienced technicians which helps us to plan the right strategy and selection of the right equipment for onsite grinding and onsite repair of crankshaft.
We possess the latest breed of inspection instruments including the instruments for the NDT test which helps us to find out the exact fault in the crankshaft resulting in successful repairs.
Replacement of crankshaft in case of breakdown by new crankshaft or reconditioned crankshaft is our expertise. The crankshaft of an auxiliary engine can also be replaced while sailing the vessel.

**Inspection of Crankpin is in Process**

**Grinding of Crankpin by Crankshaft Grinding Machine is in Process**

Our services for crankshaft grinding and repair are available 24*7. Technicians can fly down with portable lightweight crankshaft grinding machine in short notice to all over the world as they carry Indian CDC.

We have been regularly working for various models of engines like Wartsila, Daihatsu, MWM, Caterpillar, MaN, MaK, B&W, Sulzer, Bergen, Detroit Diesel, Stork Werkspoor, Pielstick, Deutz, Yanmar, MTU, Cummins, Nohab Polar, Caterpillar, Mitsubishi, Yanmar, MaK 551, MaK 552, MaK 453, MaK 451 AK, MaK 452 AK, Deutz 540, Deutz 358, Deutz 350, Pielstick PC 2.2 PC 2.5, Wartsila 524, Wartsila 824 TS, Sulzer 6 AL 25/30 and many more.

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

**Crankshaft Grinding Service on Moving Vessel**

Insitu Crankpin Grinding | Crankpin Repair | Marine and Industrial Engine – RA Power Solutions

RA Power Solutions undertake crankpin polish and crankpin grinding of crankshaft for four stroke and two stroke for marine and industrial diesel engines.

We work on medium and high capacity diesel engines having capacity of more than 400 KW. In terms of diameter we can undertake crankpin polish and crankpin grinding onsite for the diameters ranging from 60 mm to 700 mm.

Crankshaft Grinding and Polishing with Highest Precision

The crankpin grinding and crankpin polishing for marine and industrial application is undertaken by onsite crankshaft grinding machine. The diameter, surface finish and all parameters are maintained strictly as per the manufacturer’s specifications. Each job of crankpin polishing and crankpin grinding is executed with the greatest care because inexpertly repair of crankshaft can lead to the premature failure of the bearing causing considerable consequential damage. In fact with four decades of experience in the field of crankshaft grinding and crankshaft repair our experts technicians guarantee machining of crankshaft to the highest professional standards.

Insitu Crankshaft Grinding Machine from Crankcase Window

Cost Effective Crankshaft Grinding Services

In spite of constantly executing the repairs as per the OEMs standards with the highest quality demand we as an Indian company are considered to be the lowest price wise in comparison to the companies based in Europe, Singapore and other countries. We have executed successfully repair of over 10,000 crankshafts which is a testimony of confidence on us by clients based all over the world.

Inspection and Grinding of Crankpin of Wartsila Engine is in Process

Services Related to Repair and Overhauling of Engine

RA Power Solutions offers all the services related to repair and overhauling of medium and high speed engines which includes following:

Insitu crankshaft repair, crankshaft grinding and crankshaft polishing up to 700 mm diameter.
Engine block repair by metal stitching and metal locking, line boring and other process.
Repair of major parts like cylinder heads, connecting rods, cylinder liners, etc.
Repair and overhauling of diesel engines.

All the repairs and services offered by RA Power Solutions are supported with guarantee.

We extend services all over the world including Nigeria, Singapore, Indonesia, Germany, Taiwan, Belgium, Korea, Ecuador, Brazil, Mexico, Myanmar, Greece, Spain, Finland, Netherlands, Oman, Dubai, Iran, Egypt, Russia, Philippines, etc.

For more information on onsite grinding and repair of crankpin, engine overhauling services or insitu crankpin grinding please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.