Metal Lock Metal Stitching | Metal Stitching Cast Iron | Crack Repair | Engine Block Repair

Crack in cast iron components or damage of casting now can be easily repaired by metal lock and metal stitching process. The crack repair technology by metal lock and metal stitching process has outdated the old conventional method of crack repair by welding. It is said that crack repair by metal stitching and metal locking process is perhaps the only method to repair cracks in cast iron and to save the large, expensive components from rejection. In some cases, it is observed that the parts get more damaged by the welding process, resulting in the ultimate rejection and heavy financial losses.

More Details Of Repair Cast Iron Stitching | Cast Iron Repair And Cracked Engine Block Repair

Cast Iron Stitching repair in case of development of cracks or damage, casting is best undertaken by metal stitching and metal locking process. We undertake cast iron crack repair which has the following main advantages:-

Cast iron repair is possible onsite by metal stitching and metal locking process.
We extend our services 24*7 through our experienced technicians dedicated for repair cast iron, aluminium casting and cast steel casting by a metal lock.
Downtime is drastically reduced as there is no requirement for the disassembly of damaged components.
Crack repair in cast iron and repair of damage casting by metal locking is far more cost-effective in comparison to the purchase of new and expensive parts.

**Metal Stitching of Engine Block by Special Keys & Locks**

Advantages of Crack Repair | Damaged Cast Iron Component by Metal Stitching & Metal Lock:

No need of disassembly of equipment, pack it, and send it to the workshop for repairs.
Onsite crack repair is possible as the tools used are lightweight and can easily be taken to the site.
In case a large portion of cast iron components is damaged into pieces, it is possible to replace the damaged area by the new cast piece which is metal stitched with the parent casting.
Metal stitching and metal locking is proven to be a permanent crack repair process. RA Power Solutions executes all crack repair assignments with a guarantee.
Cold process, no heat is generated, no loss of profile. Hence, no machining is required.
Repair undertaken onsite. Hence, downtime of the plant is reduced drastically.
Repair is possible, qualifying for water-tight and gas-tight.

RA Power Solutions have been undertaking the lock and stitch engine block repair and cracked engine block repair of cast iron and aluminum components by metal stitching and metal locking for the last forty years. We have expertise in replacing the damaged large area of casting with a new piece. Thus maintaining the original strength of the component. In most of the cases, the new casting is dispatched from our workshop maintaining the same internal and external profile and projections after repair by metal stitching and metal locking process it is even difficult to make out whether the area was damaged as no sign of damage are visible.

**Metal Stitching & Metal Locking of Suction Bell Mouth of CW Pump Repairing**

**Metal Stitching of Engine Block on Vessel**

The cost of repairs is very important in this time of global recession. RA Power Solutions is considered to be the most economical company executing repairs all over the world. Our technicians can travel to any part of the world in a short notice and can also execute the repairs while sailing of the vessel.

For more information on metal stitching cast iron, cracked engine block metal stitching, cast iron engine block repair, cracked engine block repair, repair of crack cast iron, metal crack stitching, lock and stitch cast iron repair, metal stitching of engine block, metal crack repair, engine block repair, engine block stitching, cold metal stitching engine block, cast iron block repair, repair of crack in cast iron casting, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 and +91 9810012383.

Crankshaft Repair & Grinding Machine | Auxiliary Engine Repair Machine

RA Power Solutions have been extending services related to crankshaft repair, metal stitching, rebabbitting of bearing, overhaul, and maintenance of high-capacity engines all over the world. The concept of crankshaft repair changed with time. The use of bench-type crankshaft grinding machine is now completely outdated and onsite crankshaft repair and grinding machine is used all over the world to repair crankshaft onsite in any part of the world. There is no requirement for removal of the crankshaft, packing, and transporting it to the designated workshop.

**Portable Crankshaft Grinding Machine**

RA Power Solutions is a crankshaft grinder manufacturer, manufacturer of portable, lightweight Main Engine and auxiliary engine repair machines for the last 15 years from the range of 35 mm to 700 mm in terms of diameter.

The typical application of an onsite or in situ, crankshaft grinding and polishing machine is as follows:

Pump crankshaft
Forging Press Crankshaft
Diesel Engine Crankshaft
Four stroke/2 stroke main engine and auxiliary engine crankshaft
Turbine shaft, fan shaft, tail shaft, alternator shaft, cylindrical shaft, etc.

The in situ crankshaft grinding machine is designed to maintain similar tolerances as bench-type crankshaft grinding machines. All the parameters, specifications, and tolerances which are specified by the engine manufacturers can be easily maintained.

**Accessories for Insitu Crankshaft Grinding Machine**

**Insitu Crankshaft Grinding Machine for Bigger Diameter**

Some of the main features of the crankshaft Main Engine and Auxiliary Engine Repair Machine are as follows:

Grinding and polishing of crankshaft is possible onsite with this onsite repair equipment.
Crankshaft repair & grinding machine is compact and can be inserted from the limited space available from the inspection window of an entablature.

**Onsite Grinding & Repair of Crankpin is in Process**

**Grinding of Crankpin by Crankshaft Grinding Machine**

In case of space constraints machine can be redesigned and modification can be undertaken to place the machine on the crank pin from the window. In situ, the crankshaft grinding and polishing machine is capable to maintain taper, ovality, and surface finish strictly as per the manufacturer’s tolerance. Easy to operate.

**Training for Operation of Onsite Crankshaft Grinding Machine in RA Power Training Center**

Free 1-week training is provided onsite or in the training center of RA Power Solutions.
In situ crankshaft repair and grinding machine is available from the range of 35 mm to 700 mm. More than 70 crankshaft grinding machines are supplied all over the world.
With this precise Main Engine and Auxiliary Engine Crankshaft Repair Machine, it is possible to repair the crankshaft while sailing the vessel. This is possible due to the design and construction of the machine.

RA Power Solutions is a renowned crankshaft grinder manufacturer and exporter, offering top-notch solutions in the power industry. With their cutting-edge technology and extensive expertise, they have established a reputation for delivering high-quality crankshaft grinding machines.

**Crankpin After Grinding by Crankshaft Grinding Machine**

**Inspection of Crankpin After Grinding**

This blog is written by Mr. Raj Shahani (Managing Director of RA Power Solutions). He has forty years of experience in the field of engine repair. He has developed an onsite crankshaft grinding machine after extensive research and trials. All the crankshaft grinding machines sold by us all over the world are performing satisfactorily. For any queries related to high-capacity diesel engines, insitu grinding machine supplier, main engine maintenance, engine crankshaft grinding machine, drop us an email at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.

Crankshaft Repair | Grinding of Crankshaft | Crankshaft Machining – RA Power Solutions

RA Power Solutions have been working on high-capacity diesel engine overhaul, repair, and maintenance and grinding of crankshaft for the last more than 40 years. During our work on engines on board a vessel or in large engineering plants, we have observed that the incidents of crankshafts getting damaged due to accidents are getting very often.

As we are aware that the crankshaft is the heart of the engine by means of connecting rod the crankshaft converts reciprocating motion to the liner movement which drives the engine. RA Power Solutions have the process, technology, and onsite crankshaft grinding machines ranging from 35 mm to 700 mm and crankshaft repair is now possible without disassembly of the crankshaft from the engine. The repair of the crankshaft is possible irrespective of its length and weight as we have the equipment available up to 700 mm in terms of diameter.

The crankshaft in general has various applications including diesel generating sets and marine engines typical areas of crankshaft applications are as follows:

Compressors
Railway vehicles/engines
Power generators
Forging hammers
Pumps
Marine engines, etc.

The crankshaft of high-capacity engines used for marine and land-based applications are of forged steel. RA Power Solutions has experienced technicians, and advanced technology equipment i.e. in situ crankshaft grinding machine to maintain the dimensions and tolerances strictly as per the manufacturer’s specifications and recommendations. Major parameters maintained after crankshaft grinding and repair and grinding of crankshaft are as follows:

Taper and ovality can be maintained within 0.02/0.03 mm or less as per the requirement of the engine manufacturer.
The portable in situ crankshaft grinding machine used by RA Power Solutions technicians is capable of maintaining a surface finish of far less than 0.03 RA value.
The high surface finish value after grinding of crankpin and main journal diameter of the crankshaft enhances the life of connecting rod and main bearings considerably.

Inspection of Crankpin Before Repair & Grinding

The radius profile of both the end of the crankpin or main journal and the lubricating oil profile is maintained strictly as per the original profile.
The straightness/runout of the crankshaft is checked, and the crankshaft is straightened if required by the peening process.
Counterweight can be replaced in case of damage and supporting threads are repaired onsite.

Machining of Crankshaft by Insitu Crankshaft Grinding Machine — Machining of Crankshaft by In situ Crankshaft Grinding Machine

During our work of more than four decades, we have repaired more than 10,000 crankshafts used for different applications. All the repairs are executed with a guarantee. We are an ISO-certified company and also meet the standards requirements like DNB, Lloyd’s, etc. All our technicians possess Indian CDC and can join the vessel in a short time in any part of the world.

Crankpin After Repair by Insitu Crankshaft Grinding Machine — Crankpin After Repair by In situ Crankshaft Grinding Machine

Crankshaft grinding and repair are essential processes in the field of engine maintenance and precision engineering. The crankshaft, being a crucial component in any engine, requires meticulous attention to ensure its optimal performance. At RA Power Solutions, we specialize in main bearing machining, grinding of crankshaft, and in situ crankshaft grinding.

For more information regarding in situ crankshaft inspection, in situ grinding crankpins, and cost-effective crankshaft grinding Dubai contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankpin Machining | Crankshaft Journal Machining | Crankshaft Grinding Services – RA Power Solutions

RA Power Solutions is based in New Delhi, India, undertaking crankshaft machining for the last 40 years. Crankshafts are repaired on-site without removing them from the crankcase. In case of any damage to the crankshaft, crankpin, and leading journal we can machine it and polish it to a standard undersize within the manufacturer’s specification and tolerances specified.

The main advantage of the repair of the damaged crankshaft, and crankpin journal on site is that it requires a very short repair timescale. It works out to be cheaper to get the onsite crankshaft machined and polished as there is no need of removing the crankshaft from the block, packing and sending it to the designated workshop. At the same time, all the specifications and tolerances as per the engine manufacturer are maintained.

crankshaft grinders — **On-site Crankpin Machining**

crankshaft grinding services — **Crankshaft Grinding Services**

RA Power Solutions has a team of experienced engineers who can repair all types of defects in the crankshaft and make it reusable.

Our scope of work includes the following:

Crankshaft, Crankpin Repair
Crankshaft Journal Repair
Crankshaft Repair
Crankshaft Straightening
Crankshaft Regrinding
Crankshaft Polishing
Crankpin Machining, Crankshaft Journal Machining

We can undertake repair and polishing of crankshaft with diameters ranging from 35 mm to 700 mm. Our technicians can fly to any part of the world at short notice as they carry with them the Indian CDC. The machining of the crankshaft, repair of spare parts, engine overhauling, and maintenance can also be undertaken while sailing the vessel.

Our portable lightweight onsite crankshaft grinding machine is designed to generate minimum vibration thus maintaining a high standard of quality in terms of surface finish, taper, and ovality. Since we offer repair of primary spares, maintenance, and overhauling of Engines, spares, etc. we own one-point responsibility for the satisfactory performance of the Engine in totality.

**Grinding of Crankshaft is in Process**

**Onsite Crankshaft Repair by Portable Grinding Equipment**

We are considered to be the cheapest in the market in comparison to the competitors based in Europe.

This blog is written by Mr. Raj Shahani (Managing Director of RA Power Solutions) who has more than forty years of experience in the field of crankpin machining, crankshaft journal machining, crankshaft grinders, polishing and grinding of crankshaft, etc. For more details on babbitt bearing, white metal bearing, crankshaft grinding services, engine block repair, main journal grinding, grinding of crankshaft, or crankshaft grinders email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Reconditioning | Crankshaft Grinding Machine Exporter – RA Power Solutions

RA Power Solutions undertakes the repair of crankshafts having a diameter ranging from 35 mm to 700 mm. The concept of removing the crankshaft and sending it to the workshop for repair is now no more valid and the user gets the crankshaft repaired onsite.

During our working of more than forty years on marine main, crankshaft reconditioning, auxiliary engines, and high capacity diesel generating sets installed in industry, power plants, etc., we have observed that while the maintenance schedule stipulated by the engine manufacturer in the maintenance manual is religiously followed, but no attention is paid on the crankshaft’s condition.

Even during the maintenance schedule of 25,000 to 30,000 hours of operation, maintenance agencies and officials connected with the day-to-day upkeep of the engine ignore the inspection of the crankshaft till the seizure of bearing or any other major breakdown happens in the crankshaft.

**Repair of Crankpin on Board a Vessel**

We have experienced that irrespective of the metallurgy of the crankshaft and level of hardness after continuous operation of engine taper and ovality of the crankshaft, crankpin, and main journal are developed. The bearing surface becomes rough and in some cases bearing line marks, pitting, etc. is developed. Due to these abnormalities developed in the crankshaft, failure of bearing and crankshaft takes place. RA Power Solutions recommends that inspection procedures should be followed in order to assure satisfactory performance of the crankshaft and to save it from rejection.

During the periodic maintenance schedule, the crankpins and main journals of the crankshaft should be checked for the development of taper and ovality.
The dimensions of the crankpin, taper, and ovality should be well within the limits specified by the manufacturers. There should not be any presence of bearing line marks or pitting on the crankpin journals.
The profile of the lubricating oil hole and radius fillet should be checked visually. There should not be any loss of the original profile
The hardness test and the crack detection test by MPI or dye penetrant are not required till the major failure of the bearing or accident takes place.

Inspection of Crankpin on Board a Vessel

Checking of deflection of the crankshaft.
Positioning of crankshaft balancing weights. They should be tightened on specific torque as per the manual.

In case the above preventive inspection is undertaken on-site without disassembly of the crankshaft, the user can avoid any major damage to the crankshaft.

Onsite Machining of crankpins and main journals has been made simple in this era of technological renovation. The concept of removing the crankshaft and getting the crankshaft machined in the workshop is no more valid. The onsite crankshaft machining is undertaken to maintain strictly all the tolerances as specified by the manufacturer and stipulated in the maintenance manual.

Crankshaft machining is no more monopoly of a bunch of companies based in Europe and the UK. The availability of a portable, easy-to-operate crankshaft grinding machine it has made simple and easy to undertake the polishing and grinding of the main journal if required.

RA Power Solutions is a reputable and leading crankshaft grinding machine exporter and crankshaft reconditioning, known for its high-quality products and exceptional services. With a strong commitment to customer satisfaction, RA Power Solutions has gained a stellar reputation in the industry. Our state-of-the-art crankshaft grinding machines are designed to precision grind and polish crankshafts, ensuring optimal performance and longevity of engines.

**Repair of Crankshaft by Portable Crankshaft Grinding Machine**

RA Power Solutions have been extending onsite crankshaft inspection, main journal grinding, and crankshaft repair services for the last 40 years, We have a team of trained and experienced technicians who can fly to your site on short notice as all of them have the valid CDC.

This blog was written by Mr. Raj Shahani (Managing Director of RA Power Solutions) having more than forty years of experience in providing services like crankshaft repair and grinding, crankpin machining, polishing, and grinding of crankshaft, engine repair, and overhauling, and many other services related to the high capacity engine.

For any queries regarding grinding of main journals, polishing crankshaft journals and crankshaft grinders, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

**Crankpin After Grinding & Polishing by Crankshaft Grinding Machine**

In Situ Grinding Machine | In Situ Crankshaft Grinding and Polishing Machine – RA Power Solutions

In situ crankshaft grinding machine is an ideal solution for repair of a damaged crank pin journal of diesel engine without dismantling of the crankshaft.

Benefits of In-Situ Grinding Machine:-

RA Power Solutions grinding technology and tools are not only user-friendly, but are also capable of grinding the crankshaft to close dimensional and with geometric tolerance. These grinding tools are portable and can be easily carried by technicians to the site.

Insitu Crankshaft Grinding Machine — In Situ Crankshaft Grinding Machine

Main Accessories of In-Situ Grinding Machine supplied by RA Power Solutions:

In situ grinding machine (Complete Set)
Mother Bush
Bush
Pneumatic Motor with Adapter
Hand valve
Hose Pipe
Hanging Pipe (G.I)
Pneumatic Hand Grinder
Mops, Mounting Wheel & Rubber Base Wheel
Consumables and grinding media
Tool Box (Complete Set)

Crankshaft Grinding Machine Packed in a Steel Box for Dispatch

Accessories for Insitu Grinding Machine — Accessories for In Situ Grinding Machine

The measuring instrument used in the Job of grinding and polishing of crankshaft:-

Micrometer (Depend on Crankshaft Crank pin and main journal Diameter)
Micrometer 0-25 mm outside Ball Type Micrometer
Inside micrometer or bore gauge
Hardness Tester
Deflection Gauge
Magnetic Dial Stand with Dial Gauge
DP Test Kit or MPI Test Machine
Radius Gauge
Filler Gauge

Portable Crankshaft Grinding Machine is Ready for Dispatch

Instructions for using on site crankshaft and cylindrical Grinding Machine:-

Inspection:

Check CR Pin Size, Hardness, DP Test, or Magnetic Particle Test and
Deflection, in case all reports are good after that, take Second Step.
Dismantle the machine and check all spare parts, assemble the Pneumatic Motor in insitu grinding machine.
Assemble the hardware in the shell and assemble the machine on the crank pin and rotate gear manually.
Assemble the machine upper and lower cap and recheck all bolts.
Connect Air Hose Pipe to Pneumatic Motor.
After machining process first round is complete, dismantle the in situ grinding machine and check size of Crank Pin.
Follow same step to complete job.
Before maintaining final size, check hardness, MPI or DP Test & take Maximum Reading by Micrometer.

Note: Before final size check, reset outside micrometer and take dimension again.

Maintenance & Cleaning:-

In order to properly maintain machine tool, it is very important to perform maintenance checks periodically of all accessories. The author is Mr. Raj Shahani, Managing Director of the company. He is having forty years of experience in providing onsite engine repair services to companies all over the world. After extensive research and field trials, he has developed in situ crankshaft grinding and polishing machine to make the repair process easy and cost-effective.

For any information on crankpin repair, in situ crankshaft grinding please feel free to write to us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Reconditioning | Crankpin Reconditioning and Machining | Onsite Crankshaft Grinding & Polishing – RA Power Solutions

RA Power Solutions is a pioneering name in the realm of on site machining services. With a commitment to precision and excellence, they offer a comprehensive suite of solutions aimed at addressing complex machining challenges without the need for equipment dismantling.

RA Power Solutions undertakes complete reconditioning of crankshaft of marine engines, Diesel generating sets, Compressors, forging hammers, and all other applications. The crankshaft repair is undertaken onsite without removing the crankshaft from the crank casing. This saves the downtime of the equipment and cost of assembly of the engine after the crankshaft repairs are executed, in fact companies are opting for on site repair of crankshaft and sending the crankshaft to the workshop for repair is outdated.

**Grinding & Repair of Crankpin on Board a Vessel**

The following procedure is adopted by our experienced engineers for calibration:

Prior to starting of the repair of crankshaft, crank pin, and main journals are subject to the following inspection:

Crankpin and main journal are measured for the presence of taper and ovality.
The alignment of crankshaft is checked by deflection.
Radius fillet and lubricating oil hole are inspected for their original profile.
Inspection of hardness
Crack detection by MPI/Ultrasound and dye penetrant test.
Checking of surface finish
Visual inspection of counterweight and counterweight bolts. In case of accident, crack detection by MPI is recommended.

Based on the above observations, the crankshaft is repaired onsite maintaining the following parameters:

The grinding of crankpin and the main journal is undertaken as per the undersize recommended by the manufacturers and the availability of the bearings with the engine manufacturers.
Preparation of radius fillet, lubricating oil hole, and maintenance of profile as the original.
Polishing of crank pin and main journal, maintaining the surface finish as per international standards.
Checking of hardness and crack detection test after repairs are executed.

We have a team of experienced technicians and the necessary instrumentation to undertake the repair of the crankshaft on board a vessel, even while sailing or for stationary engines.

All the crankshaft repairs, onsite crankshaft inspection, and on site machining services undertaken by RA Power Solutions are guaranteed satisfactory performance.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in providing services related to engine repair and overhauling, crankshaft grinding and polishing, crankpin reconditioning, and many more.

For any queries regarding onsite machining, onsite crankshaft grinding, onsite crankshaft inspection, and on site machining services, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Grinding & Repair of Crankpin — **Repair of Crankshaft by Portable Crankshaft Grinding Machine**

Crankshaft Grinding & Repair Services | Crankshaft Reconditioning | Crankpin Machining – RA Power Solutions

RA Power Solutions undertakes onsite crankshaft grinding and repair, crankpin reconditioning, and crankpin machining up to a diameter of 700 mm. It is observed that due to serious accidents sometimes the radius fillet of the crankpin or main journal is damaged and it is difficult to undertake the crankshaft repair onsite without removing the crankshaft from the engine block and transporting it to the designated workshop.

With more than forty years of experience in this field, we have added a portable onsite crankshaft grinding and polishing machine which can undertake crankshaft grinding and crankshaft polishing without taking the reference of radius fillet of the crankpin or crank main journal thus saving the crankshaft from rejection.

**Inspection of Crankpins is in Process**

It is our experience that the cost of the crankshaft is very high, and in the case of high-capacity engines it works out to be 20 to 25% of the cost of the engine. Considering this fact, it is most important that the job of crankshaft grinding and crankshaft repair is entrusted to the company which has experience in repairing the crankshaft successfully. With the experience of four decades in this field and successfully repaired more than 10,000 crankshafts, we are considered to be leaders in this field and are trusted by the shipping companies, diesel power plants, and engine manufacturers for repair of crankshaft strictly as per the specifications and tolerances stipulated by the manufacturer.

The timely inspection and repair of the crankshaft are again of great importance. We have a team of engineers who can fly on short notice for the inspection and repair of the crankshaft to any part of the world. The crankshaft repair undertaken by us is guaranteed satisfactory performance.

Our crankshaft grinding services have the following features:

Onsite machining, grinding, and polishing of crankpins up to 700 mm.
Onsite machining, grinding, and polishing of all cylindrical shafts including turbine, alternator, pump shafts, and tail shaft up to the diameter of 700 mm.
Repair of radius fillet by grinding and polishing.
Portable pneumatically, lightweight crankshaft grinding machine which can be taken to any site all over the world.
All technicians having valid CDC can sail on the vessel.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in providing services related to engine repair and overhauling, crankshaft grinding and polishing, crankpin reconditioning, crankshaft repair, and many more.

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

Crankshaft Grinding | Crankshaft Grinding Services | Crankshaft Machining – RA Power Solutions

RA Power Solutions undertake crankshaft repair, crankshaft grinding and polishing onsite all over the world. The company is extending 24/7 emergency service for repair of crankshaft of main and auxiliary engines on board a vessel or for the land-based installations worldwide. We are having experience of 40 years in the field of engine repair and with the latest technology in the equipment, we are considered to be a most knowledgeable company in the world. Our response time in case of emergency is unbeatable. We have developed onsite portable, lightweight crankshaft grinding machine up to the diameter of 700 mm which is kept ready all the time to be taken on the vessel or to any Diesel Engine installation all over the world.

The client has the definite advantage of awarding crankshaft repair, crankshaft grinding, and crankshaft machining work to us as we have carried out repair of over 10000 crankshafts having serious damage and were saved from rejection. We are confident of our workmanship and design of equipment and can repair your shaft successfully without stripping it down from the engine and transporting it to the workshop.

The following procedure is adopted for successful repair of crankshaft:

Calibrated and modern instruments are used to undertake preliminary inspection of the crankshaft as follows:
1. Dimensional inspection to check taper and ovality
2. Crack detection by MPI/ultrasound or dye penetrant
3. Hardness test
4. Surface test to check surface roughness
5. Inspection to check the straightness of crankshaft
6. Lube oil and radius fillet profile check
7. Visual inspection

All the readings and observations are recorded in the inspection format, and onsite repair planning is done in consultation with our senior Engineer.

After inspection, grinding and repair of crankshaft, the following parameters are achieved:
1. Taper and ovality of crankpin and main journal after grinding and polishing can be achieved within 0.02 mm.
2. Lubrication oil hole and radius fillet profile can be given as per the original profile.
3. Presence of crack and hardness readings are taken and recorded.
4. Straightness and runout are maintained as per the manufacturer’s specifications. Surface finish of less than 20 RA value can be maintained and achieved.

**Inspection of Crankshaft After Grinding on Board a Vessel**

All the crankshaft grinding services, crankshaft repair, crankshaft grinding, and polishing jobs executed by RA Power Solutions are guaranteed for satisfactory performance. Price-wise, we are considered to be the lowest in the international market.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in providing engine repair services all over the world.

For more information regarding crankshaft repair, onsite crankshaft grinding and polishing, crankshaft machining, crankshaft grinding services, and other engine repair services, please feel free to write to us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankpin Reconditioning | Crankpin Polishing and Onsite Crank pin Repair – RA Power Solutions

RA Power Solutions has now made it easy to undertake crankpin grinding, crankpin repair and crank pin polishing onsite in a short time with the lowest cost.

We undertake onsite crankpin repair, crankpin grinding and crankpin polishing of crankshaft diameter ranging from 30 mm to 700 mm. This is undertaken by lightweight, easy to operate and portable onsite crankshaft grinding machine which is taken to the site. We have team of experienced technicians having valid passport and CDC. They can travel to any destination in the world in the shortest possible time with portable crankshaft grinding equipment and can also undertake repairs while sailing of vessel. Following procedure is generally followed for successful onsite crank pin repair of crankshaft:

Initial dimensional inspection of crankpin is undertaken by calibrated measuring instruments for taper, ovality and other parameters.
Radius fillet, lubricating oil hole of crankpin is checked for any loss of profile and damage.
Crack detection test by high-intensity MPI torch is undertaken by level 3 qualified technicians.
Hardness check and other important parameters are checked and recorded.

After the initial inspection, in case required grinding and polishing of crankpin is undertaken to maintain the tolerances strictly as per the manufacturer’s specifications.

The onsite crankshaft grinding machine used by RA Power Solutions engineers for grinding and polishing of crankpin and crankpin repair is self-designed and is improved from time to time.

Inpection of Crankpin is in Process — Inspection of Crankpin is in Process

**Onsite Inspection of Crankpin Before Grinding & Polishing**

The combination of skilled technicians and the most modern onsite crankshaft grinding machine is used for crankpin grinding delivers and maintains the tolerances after crankpin repair which is better than the international standards and the tolerances specified by the engine manufacturers. Our company is having more than four decades of experience in successful repairs of the crankshaft of high-capacity engines used for power generation, shipping, etc.

**Grinding & Polishing of Crankpin on Board a Vessel**

RA Power Solutions also provides the following onsite repair services:

Machining and grinding of crankpin journals up to 700 mm diameter.
Grinding of main journals
Machining and grinding of crankpin fillets
Grinding and Machining of main journal fillets
Machining and grinding of intermediate shaft/tail shaft
Grinding and polishing of crankshaft, turbine shaft, alternator shaft, pump shaft
Metal stitching/metal locking of damaged casting
Overhauling and repair of engine.
Rebabbitting of old white metal bearings

Author is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in providing onsite repair services related to high capacity engines across the world. He has designed and developed the portable crankshaft grinding machine to save time and money.

For more information regarding grinding of crankshaft, onsite crank pin repair, onsite repair services and crankpin repair, please free to write us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.