Marine Engine Overhauling and Repair

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.

Daihatsu 5DK-20 Crankshaft repair | RA Power Solutions forty-three years of experience

Daihatsu 5DK-20 crankshaft has been successfully repaired by RA Power Solutions technicians on board a vessel recently. A leading shipping company based in Greece operating more than fifty container vessels approached RA Power Solutions to repair the crankshaft of Daihatsu 5DK-20 on the vessel.

The main challenge was that the crankpin no. 03 of Daihatsu 5DK-20 met with a serious accident damaging the radius fillet of both sides of the crankpin. They had a stopover of only 18 hrs at Mundra Port India.

In fact, the owners disparately tried to get the crankpin repaired in Dubai and approached leading companies but none of them was able to repair the crankpin with a damaged radius filet.

Major Technical Details Of Daihatsu 5DK-20 Crankshaft

S. NO	Crankshaft Details
1.	Engine Make	Daihatsu
2.	Engine Model	5DK-20
3.	Crankpin Diameter Standard	170 mm
4.	Crankpin Bearing Width	78 mm
5.	Place of execution of crankshaft repair	Mundra Port India

Before grinding and polishing of Daihatsu 5DK-20 crankshaft — **Picture Showing Before Grinding and Polishing of Daihatsu 5DK-20 crankshaft**

**Crankshaft grinding of Daihatsu 5DK-20**

Action taken by RA Power Solutions for successful repair of Daihatsu 5DK-20 Crankpin

Dimensional inspection of the crankpin no. 03 was done by the technicians and an ovality of 0.49 mm with deep bearing marks, rough surface, etc was observed.
The radius fillet of both sides of crankpin no. 03 was damaged badly in fact the original profile of the fillet radius of Daihatsu crankshaft was lost due to an accident.
Hardness and crack detection tests were undertaken and were found within limits.
Deflection was also within the parameters.
Our technicians with the help of specially designed compact dedicated tooling for repair of crankpin having small bearing width used the equipment. They reduced the diameter of the crank pin by 1.0 mm and maintained the final diameter of 169.00 mm. Maintaining the tolerance within 0.02 mm, the preparation & formation of radius fillet on both sides of the crank pin was a challenge which was done by our technicians within 18 hours of boarding the vessel.
In this case of Daihatsu 5DK-20 the crank pin bearing width is only 78 mm and with our specially designed equipment it was possible to undertake the grinding.No other company have the compact tooling to undertake such repairs on site without removing it from the engine block.
The bearing is only 1.0 mm undersize and was supplied by RA Power Solutions. The engine was commissioned during the presence of our technicians on board the vessel.

**Daihatsu 5DK-20 after Grinding & Polishing**

**Crankpin Daihatsu 5DK-20 after Repair**

RA Power Solutions is ISO 9001:2015 (Quality Management System) & ISO 14001:2015 (Environmental Management System) certified approved company.

We have been regularly executing onsite crankshaft repairs and crankshaft grinding in Dubai, Oman, Saudi Arabia, Qatar, Abu Dhabi, Sharjah, Ajman, Umm Al-Quwain, and Fujairah, Bahrain, Kuwait, Iraq, Antigua and Barbuda, Belize, Dominica, Dominican Republic, Grenada, Guyana, Haiti, Jamaica, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Trinidad, and Tobago, etc.

For more details of the Repair of engine and supply of bearings please email us on rajshahani@rapowersolutions.com, info@rapowersolutions.com Call at +91 9582647131, or +91 9810012383.

Guaranteed repair of Daihatsu DC-17 Crankshaft | Save Daihatsu DC-17 Crankshaft from rejection | Forty three year’s experience

Contact RA Power Solutions for undertaking the crankshaft grinding of Daihatsu 5DC-17 and all models without removing the crankshaft from the block.

MAJOR TECHNICAL DETAILS OF DAIHATSU DC-17 :

S. NO	Crankshaft Details
1	Engine Make	Daihatsu
2	Engine Model	6DC-17 Engine
3	Crankpin Diameter Standard	145mm
4	Crankpin Bearing Width	64mm
5	Place of execution of crankshaft repair	Odisha Port India

Crankshaft Grinding of Daihatsu DC-17 Engine

As can be seen from the above the crankshaft of Daihatsu DC 17 crankpin width is only 64 mm and diameter is 145 mm which is considered to be very small. It requires a very compact design of Insitu crankshaft grinding machine which can be inserted from the engine block.

RA Power Solutions is the only company in the world which has the latest technology, Equipment, and process available for crank pin grinding and polishing of Daihatsu DC-17 without removing it from the engine block. The grinding of crankpin can also be done while sailing of the vessel.

Machining of crankshaft of Daihatsu DC-17

Grinding under Process of Daihatsu DC-17

Save Crankshaft of Daihatsu DC-17 contact RA Power Solutions for successful and Guaranteed repair

Since no other crankshaft repair company in the world has equipment, technology, and process available for repair of the crankshaft of Daihatsu DC17, they insist on removing it from the block and sending it to the workshop or rejecting it by giving some excuses.
Contact RA Power Solutions who have more than forty-three years of experience in onsite crankshaft grinding and have successfully repaired more than hundred crankshafts of Daihatsu DC-17 all over the world.
The reference of that client, certificate of satisfactory performance, and inspection reports signed by chief engineers of the vessel can be furnished on request.
Reduce downtime, and save crankshaft by getting it repaired by RA Power Solutions.
Undersize bearings of all sizes of crank pin are available in our stock.

RA Power Solutions is ISO 9001:2015 (Quality Management System) & ISO 14001:2015 (Environmental Management System) certified approved company.

We have been regularly executing on-site crankshaft repairs and crankshaft grinding in Dubai, Oman, Saudi Arabia, Qatar, Abu Dhabi, Sharjah, Ajman, Umm Al-Quwain, and Fujairah, Bahrain, Kuwait, Iraq, Antigua and Barbuda, Belize, Dominica, Dominican Republic, Grenada, Guyana, Haiti, Jamaica, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Trinidad, and Tobago, etc.

Crankpin of Daihatsu DC-17 Engine Crankshaft after Repair

For more details on the Repair of engine please email us at raj.shahani@rapowersolutions.com, info@rapowersolutions.com or Call +91-9582647131,+91 9810012383.

Cylinder Liners Manufacturer RA Power Solutions

RA Power Solutions with forty-three years of presence in the field of high-capacity engine spare parts and repairs understand that the cylinder liners are the most critical part of the engine where actual combustion takes place. The cylinder Liners for the main and the auxiliary engines are normally manufactured out of cast iron.

Manufacturing range of Cylinder Liners

Our Present range of cylinder Liners is up to 700 mm bore with a length of 1200 mm. These parameters cover most of the popular engines and their models.
The liners are manufactured by us as per the drawing provided by the clients. We also develop and manufacture cylinder liners as per the sample provided by the clients.
We have developed a large number of liners which are not available in the market because of the closure of the manufacturing units.
The customers in the absence of non-availability of cylinder liners face a lot of problems. We can develop & manufacture the cylinder liners in a short duration and at very competitive rates.

**Cylinder Liner for forging equipment**

Quality of Cylinder Liners

All the cylinder Liners are manufactured by a centrifugally cast process in order to have the uniform grain structure of the casting. The alloy cast iron cylinder liner gives high wear and corrosion resistance with durability and long life. The liners are finely machined and ground. For honing the latest equipment is used to maintain the desired finish and parameters.

We have been manufacturing and exporting the cylinder liners to leading companies all over the world including Argentine, Brazil, Czech Republic, Peru, Bolivia, Russia, Germany, United Kingdom, France, Italy, Spain, Paraguay, Poland, Romania, Netherlands, Belgium, Czech Republic, Greece, Portugal, Sweden, Hungary, Belarus, Austria, Serbia, Bulgaria, Denmark, Finland, Norway, Ireland, Slovenia, Estonia, Malta, Jordan, Libya, Kuwait, Egypt, Morocco, Yemen, Bahrain, Trinidad and Tobago, Tunisia, Sudan, Oman, Algeria, Saudi Arabia, Iraq, Venezuela, UK etc.

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

In situ Machining of Sulzer Z 40/48 Crankshaft on vessel | Sulzer crankshaft repair

A Sulzer main engine Sulzer Z 40/48 aboard a container vessel faced serious damage to the crankshaft due to failure of the Governor, this resulted in damage to crankpins.

The major technical details of Sulzer Z 40/48 crankshaft are given below:

S. No.	Crankshaft Details
1.	Engine Make	Sulzer
2.	Engine Model	Z 40/48
3.	Crankpin Diameter Standard	330 mm
4.	Crankpin Bearing Width	132 mm
5.	Place of execution of crankshaft repair	Port of Las Calderas Bani in Dominican Republic

**Damaged crankpin of Sulzer Model Z 40/48**

**Repair of Crankshaft of Sulzer Model Z 40/48**

The inspection of the Sulzer crankshaft was done by our technicians and the following main observations were reported.

On removal of the connecting rod from all the six crankpins the crankpin bearings were observed badly damaged. There were deep scoring marks and localized damage on the crankpin.
The hardness and crack detection was done and they were observed to be within limits.
Deflection readings were within the parameters stipulated in the manual.
The crankpins dimensional were checked and ovality as per following table was observed.

**Sulzer Model Z 40/48 crank pin no 04 before grinding**

**Crankpin no. 05 of Sulzer Z 40/48 before grinding**

**Sulzer Model Z 40/48 crank pin no 06 before grinding**

Action taken by RA Power Solutions for successfully repair of crankshaft Sulzer Z 40/48

The ovality, deep scoring marks and local damage was observed on all crankpins, further the ovality ranging from 0.11 mm to 0.43 mm was observed as per the dimensional chart pasted above.
In this situation client’s management was consulted and a presentation was made on the damage to the crankshaft and the remedial action proposed by RA Power Solutions.
All the crankpins were undersized as per the chart below except crankpin no 01 which was only polished:

The radius fillet of two crankpins which were damaged due to the accident was also repaired.
After repair technicians again checked all the parameters and were found within limits.

Sulzer Model Z 40/48 crankpin repair results

RA Power Solutions experienced technicians repaired the crankshaft successfully within the tolerance limits specified in the manual and then re- install the crankshaft to full rated capacity of the load.

By undertaking the repairs of the crankshaft onsite without removing it from the engine block, clients save the down time and also the cost of removing it from the block and sending it to the workshop.

**Crankpin no. 03 after grinding & polishing on board a vessel**

**Sulzer Z 40/48 Crankpin after successful repair**

**Sulzer engine Z 40/48 Crankpin no. 05 after repair**

RA Power Solutions is ISO 9001:2015 (Quality Management System) & ISO 14001:2015 (Environmental Management System) certified approved company and extends crankshaft repair services all over the world. We can move our team of technicians and equipment anywhere in the world within 24 hours of first information.

We have been regularly executing on-site crankshaft repairs and crankshaft grinding in Dubai, Oman, Saudi Arabia, Qatar, Abu Dhabi, Sharjah, Ajman, Umm Al-Quwain, and Fujairah, Bahrain, Kuwait, Iraq, Antigua and Barbuda, Belize, Dominica, Dominican Republic, Grenada, Guyana, Haiti, Jamaica, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Trinidad, and Tobago, etc.

For more details of the Repair of engine, Engine Sulzer, please email us on raj.shahani@rapowersolutions.com, info@rapowersolutions.com or Call +91 9582647131, +91 9810012383.

Compressor Crankshaft Grinding and Polishing Onsite

RA Power Solutions was approached by a leading Fertilizer producing company based in north India regarding the requirement of onsite grinding and polishing of compressor crankshaft.

The company has five high-capacity CO2 compressors which have been imported from a leading company based in Europe.

Our team consisting of three technicians along with onsite crankshaft grinding equipment was deputed to the site and following was observed:

Details of CO2 Compressor Crankshaft:

S. NO	Crankshaft Details
1	Engine Make/ Model	CO2 COMPRESSOR
2	Crankpin Diameter Standard	317.30 MM
3	Crankpin Bearing Width	210.00 MM
4	Main Journal diameter	330 mm & 317.30 mm
5	Main Journal Width	370 mm & 225 mm
6	Place of execution of crankshaft repair	Fertilizers & Chemicals Plant in India

On dimensional inspection of crankpin it was observed that crankpin nos. 02 developed excessive ovality. It also had deep line marks due to the failure of bearings which are of babbitt white metal type.
All the remaining crankpins were inspected and rough surfaces including bearing line marks were observed.
The main journal having a standard diameter of 330 mm also had a rough surface and required polishing.

**Damage of crankpin no. 6 of Compressor**

**Onsite repair of damaged crankshaft of CO2 Compressor**

**Picture showing before polishing of Main Journal**

Action taken by RA Power Solutions

Considering the fact that the main journal having a diameter of 330 mm having a rough surface and bearing line marks it was decided to remove the crankshaft from the compressor.

RA Power Solutions technicians submitted a drawing of V-Block which were manufactured in the factory for placement of crankshaft.

The grinding of crankpin no. 02 was undertaken and the final dimensions were maintained between 315.58 mm to 315.60 mm. The ovality of only 0.02 mm was observed.

All the remaining 05 crankpins were polished, removing the line marks and improving the surface finish. The surface finish after polishing was observed at less than 15 RA value.

All the main journals were also polished onsite removing the ovality to some extent and improving the surface finish again to less than 15 RA value.

**Crack detection test of compressor crankshaft before grinding**

**CO2 Compressor Crankshaft Inspection and Repair on site**

Advantage of getting the crankshaft grinding/ Polishing done by RA Power Solutions

RA Power Solutions is the only company in India having experience of forty-three years in crankshaft repair.
We have ready availability of equipment up to 700 mm diameter. The equipment is portable and lightweight and can be taken to any site all over the world as accompanied baggage. The modification in the onsite crankshaft grinding and polishing equipment is possible as per the site requirement.
In this case since the main journal diameter was to be polished the V-Block was designed and fabricated onsite.
RA Power Solutions as a protocol undertakes all the checks prior to grinding and polishing like cracks by MPI, Hardness test, deflection, etc.
We also manufacture babbitt white metal bearings and do rebabbitting of old bearing up to 1500 mm diameter.

**After Grinding and polishing taken deflection of CO2 Compressor Crankshaft**

**Main Journal of CO2 compressor after polishing**

For more information on crankshaft grinding services, insitu crankshaft grinding and polishing, onsite crankshaft repair, or crankshaft polishing services email us at rajshahani@rapowersolutions.com, info@rapowersolutions.com Call at +91 9582647131,+91 9810012383.

Babbitt White Metal | White Metal Manufacturer for Bearing

RA Power Solutions with forty-three years of experience in the field of high capacity engine, turbine, and of rotatory equipment are leaders in the manufacturing of babbitt white metal alloy bearing up to 1500 mm diameter.

The babbitt white metal is manufactured by us strictly as per the composition required by the client and its application.

Understanding the properties of babbitt white metal composition as a hard-core engineering company. We understand the importance of the correct composition of babbitt white metal.

The babbitt white metal alloy and ingots are subject to stringent in-house quality control and composition is strictly maintained.

Types of Babbitt generally used in the repair of Bearings
Grade / Composition	% Sn	% Sb	% Pb	% Cu	Compression Yield (PSI)		Compression Strength (PSI)		Hardness		Melting Point	Pour Temp
Grade / Composition	% Sn	% Sb	% Pb	% Cu	68° F	212° F	68° F	212° F	68° F	212° F	° F	° F
Tin-Based Babbitt
1	91.0	4.5		4.5	4,400	2,650	12,850	6,950	17.0	8.0	433	825
2	89.0	7.5		3.5	6,100	3,000	14,900	8,700	24.5	12	466	795
3	83.3	8.3		8.3	6,600	3,150	17,600	9,900	27	14.5	464	915
11	87.0	7.0		6	3,050	1,400	12,800	5,100	15	7	471	630
Lead-Based Babbitt
7	10.0	15.0	75.0		3,550	1,600	15,650	6,150	22.5	10.5	464	640
8	5.0	15.0	80.0		3,400	1,750	15,600	6,150	20.0	9.5	459.0	645.0
13	6	10	83.5	0.5
15	1.0	16.0	82.4	0.6					21.0	13.0	479.0	662.0

The Babbitt white metal, Babbitt alloy, and babbitting white metal is largely exported by us all over the world including following countries.

NORTH AMERICA: US, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark
AFRICA: Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, the Republic Of Congo, Gabon
SOUTH AMERICA: Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay
ASIA: Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia
EUROPE: Russia, Norway, Germany, France, Italy, UK, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary Albania, Austria, Switzerland, Slovakia Finland, Ireland Croatia, Slovenia, Malta.
MIDDLE EAST: Saudi Arabia, Iran, Ira, Qatar, Bahrain, Oman, Kuwait, Turkey, Yemen, Syria, Jordan, Cyprus

For more information on babbitt metal, babbitt white metal manufacturer, white metal bearing manufacturer, and white metal babbitting bearing contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.

We are giving below the photos of Babbitt Metal | White Metal alloy

Bearings for Engine Daihatsu, Yanmar, MAN, Allen, CKD Skoda, Cummins, and Ariel Compressor

Crankpin & main journal Bearings of standard, undersize and special size are available in stock with RA Power Solutions. The most popular makes of engines like Daihatsu, Yanmar, MAN, Allen, CKD Skoda, Cummins, and Ariel Compressor crankpin and main journal bearings are available with us.

RA Power Solutions as a leading crankpin & main journal grinding company understands the importance of ready availability of undersize & special size bearings. We have experienced that in most cases undersized bearings are not available delaying the commissioning of the auxiliary or main engine on board the vessel even after the crankshaft is repaired.

In order to reduce the downtime and to keep the vessel moving we maintain the stock of undersize crankpin and main journal bearings of all popular make & models of auxiliary engine and main engine installed on the vessel.

We have illustrated below the example of a few makes & models of engines bearings that are available in stock.

Sr.No	Description	Qty
1.	MAN CME 5L 16/24 Standard Crankpin Diameter- 130mm a) 0.5 mm Undersized Crankpin Bearing b) 1.0 mm Undersized Crankpin Bearing c) 1.5 mm Undersized Crankpin Bearing	4 pairs 4 pairs 4 pairs
2.	Daihatsu 5DK20 Standard Crankpin Diameter-170mm a) 0.5 mm Undersized Crankpin Bearing b) 1.0 mm Undersized Crankpin Bearing c) 1.5 mm Undersized Crankpin Bearing d) 2.0 mm Undersized Crankpin Bearing e) 2.5 mm undersize Crankpin Bearing	14 Pairs 6 pairs 4 pairs 4 pairs 4 pairs
3.	Daihatsu 5DC17 Standard Crankpin Diameter-145mm a) 0.5 mm Undersized Crankpin Bearing b) 1.0 mm Undersized Crankpin Bearing c) 1.5 mm Undersized Crankpin Bearing d) 2.0 mm Undersized Crankpin Bearing e) 2.5 mm Undersized Crankpin Bearing f) 3.0 mm Undersized Crankpin Bearing	14 pairs 4 pairs 4 pairs 4 pairs 4 pairs 4 pairs
4.	Yanmar Engine 6N18AL-DN/DV Standard Crankpin Diameter-145 mm a) 0.40 mm Undersized Crankpin Bearing b) 0.80 mm Undersized Crankpin Bearing c) 1.60 mm Undersized Crankpin Bearing d) 2.0 mm undersized Crankpin Bearing	16 pairs 14 pairs 4 pairs 4 pairs
5.	Yanmar Engine –S 185 L Standard Crankpin Diameter-140 mm a) 0.8 mm Undersized Crankpin Bearing b) 1.2 mm Undersized Crankpin Bearing c) 1.60 mm Undersized Crankpin Bearing d) 2.0 mm Undersized Crankpin Bearing	6 pairs 4 pairs 4 pairs 4 pairs
6.	MAN 9ASL 25/30 Standard Crankpin diameter-195mm a) 2.5 mm Undersized Crankpin Bearing b) 3.0 mm Undersized Crankpin Bearing c) 4.0 mm Undersized Crankpin Bearing	2 pairs 4 pairs 4 pairs
7.	Allen Engine PVBCS12 F Standard Crankpin diameter – 190.40 mm a) 0.5 mm Undersized Crankpin Bearing b) 1.0 mm Undersized Crankpin Bearing	4 pairs 4 pairs
8	Gas Engine Deutz MWM TBG32V16 Standard Crankpin diameter 204.50 mm a) 0.5 mm Undersized Crankpin Bearing	4 pairs
9.	CKD Skoda 638A6S 2270 KVA Standard Crankpin diameter 280 mm a) 0.5 mm Undersized Crankpin Bearing b) 1.0 mm Undersized Crankpin Bearing c) 1.5 mm Undersized Crankpin Bearing d) 2.0 mm undersized Crankpin Bearing	12 pairs 12 pairs 12 pairs 12 pairs
10	Cummins Model QSV 91G	4 pairs
11	Ariel Compressor JGH/4 stroke 4.5 inch a) 0.5 mm Undersized Crankpin Bearing b) 1.0 mm Undersized Crankpin Bearing c) 1.5 mm Undersized Crankpin Bearing	4 pairs 4 pairs 4 pairs
12	Ariel Compressor JGH/4 stroke 4.5-inch Main Journal a) standard size Main Journal Bearing	3 pairs

We export Trimetal engine bearing and Babbitt white metal bearings in countries like Argentina, Bahamas, Barbados, Bermuda, Bolivia, Brazil, Canada, Chile, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Guatemala, Guyana, Haiti, Honduras, Jamaica, Iran, Mexico, Nicaragua, etc.

For more information on white metal bearing alloy in ingot form, bearings for yanmar engine, bearing manufacturing company, bearings for Daihatsu engine, and bearing for engines contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.

Tri Metal Bearing for Crank Pin and Main Journal — **Tri-Metal Bearing for Crank Pin and Main Journal**

Daihatsu 5DC-17 Undersize Bearings Availability and Crankshaft Repair

RA Power Solutions is proud to announce that we are saving the crankshaft of Daihatsu 5DC-17 from rejection by undertaking successful repair. As on date we have saved more than a hundred fifty crankshafts from rejection and have repaired them onsite without removing it from the engine block.

The Main Features of Repair of Daihatsu 5DC-17 Crankshaft by RA Power Solutions are as following:

RA Power Solutions is the only company in the world that can undertake grinding of Daihatsu 5DC-17 crankpins having a crankpin diameter of 145 mm and bearing length of only 64 mm which is considered to be very less for the placement of the on-site crankshaft grinding machine.
We have specially designed and dedicated onsite crankshaft grinding equipment which can be inserted from the engine block window to undertake the grinding of crankpins. No need for removing the crankshaft from the block & sending it to the workshop.
Damage to fillet radius is a serious issue with the crankshaft of Daihatsu 5DC-17. We undertake the repair of the fillet radius and do the grinding.
RA Power Solutions is the first and only company in the world that can undertake the grinding of crankshaft with a damaged fillet even while sailing the vessel.

Ready stock of Crankpin undersize Bearings

RA Power Solutions maintain a stock of undersize bearings which are required immediately after grinding. In most cases, we send our technicians along with the undersize bearing which facilitates immediate commissioning & operation of the engine after the grinding of crankshaft is done.
The Daihatsu 5DC-17 engine manufacturer recommends grinding of crankpin only up to 1.0 mm undersize. With our experience of more than 43 years in the repair of marine engine crankshafts, we have undersized the crankpins up to 3.0 mm and the engines are performing satisfactory.
The successful repair of the crankshaft has resulted in saving of huge amount for the owners of shipping companies.

Following Daihatsu 5DC-17 Bearings are Available and Ready in Stock.

Main Journal Bearings standard size.
Crankpin Bearings:
- 0.5 mm undersize
- 1.0 mm undersize
- 1.5 mm undersize
- 2.0 mm undersize
- 2.5 mm undersize
- 3.0 mm undersize

For your requirement of Repair of crankshaft of Daihatsu 5DC-17, bearings for Daihatsu engine and undersize crank pin bearings please contact RA Power Solutions or please Email us at rajshahani@rapowersolutions.com, info@rapowersolutions.com Call at +91 9582647131,+91 9810012383.

MAN Diesel Engine Maintenance & Repair Services

MAN Diesel Engine 9L28-32

RA Power Solutions was approached by a company based in Dubai regarding a problem in crankshaft faced in MAN Diesel Generating set model no. 9L28/32.

The make, model of Engine, and crankshaft details are given below:

S. NO	Crankshaft Details
1.	Engine Make	MAN B&W
2.	Engine Model	9L28/32
3.	Crank pin Diameter Standard	230 mm
4.	Crankpin Bearing Width	98 mm
5.	Place of execution of crankshaft repair	Sailing from Port of Jebel Ali Dubai to JNPT port India(Mumbai)

Repair of MAN Engine Model no. 9L28/32 Diesel Generating set Crankshaft

RA Power Solutions deputed two technicians along with an onsite crankshaft grinding machine and technicians boarded the vessel at port of Jebel Ali Dubai. On conducting the inspection following are the main observations of the crankshaft of MAN Engine Model no. 9L28/32 diesel Generating sets.

It was observed that the crankpin no. 3 of the AE#02 was damaged. The Bearing material was embedded on the crank pin diameter. After removal of the white metal from the crankpin, the dimension inspection was done and the following was observed:
- Minimum crankpin diameter observed: 229.44 mm
- Maximum crankpin diameter observed: 229.83 mm
The above readings were observed against the standard diameter of 230.00 mm.
The radius fillet and lubricating oil hole profiles were found acceptable with no damage.
Deep Bearings line marks were observed on the remaining 8 numbers of crankpins.
All the crankpins were subject to hardness test and crack check by MPI method and no abnormality was observed.
All other parameters were observed within limits.

Successful Crankshaft Repair of MAN Engine Model no. 9L28/32

The grinding of crankpin no. 3 was initially undertaken to the undersize of 1.0 mm maintaining the crankpin diameter of 229.00 mm. Since the Bearing line marks were still visible it was decided to grind further. The final size maintained after grinding and polishing was 228.50 mm which is 1.5 mm undersize.
Considering the rough surface finish and bearing line marks all the remaining crankpins were polished while using the state of art crankshaft grinding & polishing machine using the latest polishing media.
The surface finish of less than 0.20 RA value was maintained.
The ship had the 1.5 mm undersize bearing available which was assembled and the engine was put on load.

RA Power Solutions having more than 41 years of experience in extending crankshaft grinding, metal stitching, rebabbitting of bearing, and all the services related to engine repair. We undertake onsite grinding of crankshaft up to 700 mm diameter.

The main feature of our crankshaft grinding machine is that the grinding & polishing of the crankshaft can be undertaken even while sailing of the vessel. There is no requirement of holding the vessel at the port or at Anchorage.

**Crack Check of MAN Engine Model no. 9L28/32**

For more details regarding crankshaft grinding, rebabbitting of bearing, and engine block repair, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.