Connecting Rod Repair

Cylinder Liners and Cylinder Sleeves of Diesel and Marine Engine

In high-capacity diesel and marine engines, cylinder liners—or sleeves—serve as the durable cylindrical surface where the piston reciprocates.

The cylinder liners and cylinder sleeves used in high-capacity diesel engines, marine engines, and other applications have far superior material in comparison to the cylindrical block of the diesel engine.

**Mirrlees Blackstone Engine Cylinder Liners/Cylinder Sleeves**

Material & Manufacturing Excellence

RA Power Solutions understands the importance of cylinder liner application and manufactures cylinder liners having the following features:

The cylinder liners manufactured are of alloyed cast iron with composition of chromium, vanadium, and molybdenum. The percentage varies according to the application of the cylinder liner.
Cylinder liner of cast iron manufactured by RA Power Solutions contains graphite, which is considered to have good lubricant properties.
The alloying elements used at the time of casting of cylinder liner resist corrosion and improve the wear resistance at high temperatures.
We cast the cylinder liners using a centrifugal system. This process ensures dense and blowhole-free casting.
The cylinder liner manufactured by RA Power Solutions are high wear resistance having good thermal conductivity and internal damping properties.
The cost of the cylinder liners is considerably lower than comparison of the cylinder liners supplied by the manufacturers of the engines. All cylinder liners stand to guarantee satisfactory performance.

Global Compatibility & Custom Fabrication

We routinely manufacture and export cylinder liners for all major engine brands, including MAN B&W, Cummins, Caterpillar, Wartsila, Mitsubishi, Volvo Penta, Yanmar, and many others.

Whether you provide a sample or a technical drawing, our team can custom-engineer cylinder liners and sleeves to meet your specifications

**Reconditioned Cylinder Liners Ready for Dispatch**

Why RA Power Solutions Stands Out?

Custom & precision manufacturing using advanced methods like centrifugal casting and CNC machining.
Global export capability backed by decades of experience and partnerships with OEMs.
Quality assurance through complete dimensional inspection and certification.
Technical flexibility for small batches or bespoke designs.

For more information on high-quality cylinder liners, cylinder liners of diesel engine, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs:

Q1: What is the function of a cylinder liner?

A: It provides a durable surface for the piston to move, withstanding wear, heat, and pressure.

Q2: What materials are used for cylinder liners?

A: We use high-grade cast iron or alloy steel with optional chrome plating, phosphating, or nitriding.

Q3: What sizes can you manufacture?

A: We produce liners up to 1500 mm in length for various engine types.

Q4: Can you make custom cylinder liners?

A: Yes, we can manufacture based on your sample or technical drawing.

Q5: Which engine brands do you supply liners for?

A: We supply for MAN B&W, Caterpillar, Wartsila, Mitsubishi, Yanmar, Cummins, and more.

In high-capacity diesel and marine engines, cylinder liners—or sleeves—serve as the durable cylindrical surface where the piston reciprocates. The cylinder liners and cylinder sleeves used in high-capacity diesel engines, marine engines, and other applications have far superior material in comparison to the cylindrical block of the diesel engine. Material & Manufacturing Excellence RA Power Solutions … Continue reading “Cylinder Liners and Cylinder Sleeves of Diesel and Marine Engine”

Grinding of Crankshaft by RA Power Solutions | Oman

A vessel sailing near Oman reported a serious breakdown of the auxiliary engine of the Yanmar model 6N18AL. The RA Power Solutions team, which is always ready for emergency response, left for Oman and conducted a detailed inspection of the engine. It was observed that crankpin no. 4 bearing seized, resulting in the damage of CR pin no. 4. All other crankpins also developed ovality to the extent of a maximum of 0.20 mm.

RA Power Solutions serves clients all over the world. The expert team of crankshaft grinding technicians can undertake the grinding of crankshafts up to 700 mm.

Unmatched Capability & Reach

Global presence: We offer comprehensive services, including crankshaft repair, overhauling, and maintenance for high-capacity diesel engines across the globe
Capacity: Capable of handling crankshaft diameters up to 700 mm
Proven trust: With over 11,000 crankshaft repairs completed to date, our commitment to quality speaks through our reputation

**Crankpin Grinding by Onsite Crankshaft Grinding Machine**

All the parameters like taper, ovality, surface finish, etc., after onsite crankshaft grinding are maintained strictly as per the manufacturer’s specifications. RA Power Solutions undertakes all the jobs related to repair, maintenance, and overhauling of high-capacity diesel engines and diesel generating sets onsite all over the world. RA Power Solutions has repaired more than 11,000 crankshafts. The industry respects our strong commitment to quality and service.

For more information about our services for crankshaft grinding machine for engine repair, crankshaft grinding machine supplier, in situ machining crankshaft repair, onsite crankshaft machining and polishing, onsite crankshaft machining service, grinding of crankshaft, and crankshaft repair, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs:

Q1: What is in-situ crankshaft grinding?

A: Repairing the crankshaft without removing it from the engine to save time and costs.

Q2: What crankshaft sizes can you handle?

A: We repair crankshafts up to 700 mm in diameter.

Q3: Can repairs done while the vessel is sailing?

A: Yes, our portable machines allow grinding at sea.

Q4: Which engines do you service?

A: We work on Daihatsu, Yanmar, Wartsila, MAN B&W, Caterpillar, Cummins, and more.

Q5: Are you certified?

A: Yes, we are ISO 9001:2015 and ISO 14001:2015 certified.

A vessel sailing near Oman reported a serious breakdown of the auxiliary engine of the Yanmar model 6N18AL. The RA Power Solutions team, which is always ready for emergency response, left for Oman and conducted a detailed inspection of the engine. It was observed that crankpin no. 4 bearing seized, resulting in the damage of … Continue reading “Grinding of Crankshaft by RA Power Solutions | Oman”

Reconditioned of Connecting Rods and Repair | Engine Connecting Rods

RA Power Solutions is a leader in undertaking repair and reconditioning of connecting rods of high-capacity engines installed in diesel engine power plants, ships, and for other applications.

Reconditioning of connecting rod and repair methodology have been developed by using latest breed of equipment and our experience of four decades in this field.

Inspection of Connecting Rods — **Marine Engine Connecting Rods under Reconditioning**

We strongly recommend our customers to use reconditioned connecting rods. We thoroughly check and repair them in our workshop while maintaining the original tolerances.

Why Choose Reconditioned Connecting Rods?

Ready Availability: We stock reconditioned rods for popular engine brands such as MAN-B&W, Sulzer, Wartsila, MAK, Caterpillar, Deutz, Daihatsu, Yanmar, Bergen, Mitsubishi, Paxman, Mirrlees, and many more—all ready for quick dispatch.
Guaranteed Quality: Each rod undergoes a qualified repair process, strict quality checks, and output from metallurgical examination—then is issued with a calibration certificate ensuring performance equivalent to new rods.
Significant Savings: Reconditioned rods cost approximately 25% of new OEM parts, delivering enormous cost advantages for owners.

Second Hand Connecting Rod of Wartsila Engine

Second Hand Connecting Rod of CAT Engine

Trusted Worldwide & Fully Supported

The availability of reconditioned connecting rod gives ship operators and diesel power plant owners access to low cost. Reconditioned connecting rods which are equivalent to the new one in terms of tolerances, performance, and life cycle.

RA Power Solutions is an experienced and respected company in the field of diesel engines. We strongly recommend using reconditioned connecting rods. We guarantee their quality through our controlled and approved repair process, advanced technology, and metallurgical examination during and after reconditioning.

The price of reconditioned connecting rods is about one-fourth of a new one. This results in enormous savings for the owners.

For more information regarding marine engine spares, new connecting rods, and reconditioned connecting rods & engine connecting rods of all makes and models of diesel engine, please feel free to write us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Inspection of Wartsila Engine Connecting Rod

FAQs:

1. What is a reconditioned connecting rod?

A reconditioned connecting rod is a used rod restored to original manufacturer tolerances through precision machining, inspection, and repairs.

2. Are reconditioned connecting rods as reliable as new ones?

Yes. We follow a controlled repair process, advanced technology, and metallurgical inspections to ensure they perform like new rods.

3. How much can I save by using reconditioned connecting rods?

You can save up to 75% compared to buying a new OEM connecting rod.

4. Do you stock reconditioned connecting rods for all engines?

We keep a ready stock for the most popular diesel engine brands and can also supply specific rods quickly if not in stock.

5. Do reconditioned connecting rods come with a warranty or certification?

Yes. Each reconditioned rod is supplied with a calibration certificate and quality assurance documentation.

RA Power Solutions is a leader in undertaking repair and reconditioning of connecting rods of high-capacity engines installed in diesel engine power plants, ships, and for other applications. Reconditioning of connecting rod and repair methodology have been developed by using latest breed of equipment and our experience of four decades in this field. We strongly … Continue reading “Reconditioned of Connecting Rods and Repair | Engine Connecting Rods”

Onsite Crankshaft Grinding Machine for Crankshaft Repair – RA Power Solutions

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

Grinding of Crankpin using Onsite Crankshaft Grinding Machine

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

The crankshaft grinding machine has the following features:

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

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

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

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

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

Crankshaft Grinding Machine Packed in Steel Box for Dispatch

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

FAQs:

1. What is an onsite crankshaft grinding machine?

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

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

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

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

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

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

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

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

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

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

Repair of Connecting Rod for High Capacity Engine – RA Power Solutions

RA Power Solutions has undertaken reconditioning and repair of connecting rods, mainly of high-capacity engines for the last 4 decades of Wartsila, Caterpillar Engine, MAK, MAN, Mitsubishi, Yanmar, Pielstick, Deutz, etc.

We are following procedure for repair of connecting rods:

We thoroughly clean the connecting rods with special chemicals to remove oil and dirt.
We visually check the connecting rod for any signs of overheating, which may appear as a “bluish” discoloration. In such cases, we check the hardness and perform MPI to detect cracks in the overheated area.

Calibration of Connecting Rod is in Process

A qualified technician performs the magnetic particle test under the supervision of a senior engineer. They check the serration, connecting rod bolt, bolt seating area, and the complete connecting rod for cracks. We do not accept any connecting rod with cracks.
We check the connecting rod bolts for elongation. If we find any deviation, we replace the bolts.
We tighten the connecting rod big end bolt according to the torque specified by the manufacturer.
Check the big end bore for taper and ovality. We also look at the bore to see whether it is damaged.

We inspect the small end bore for taper, ovality, or any visual damage.
Connecting rod is subject to shot blasting.
The first step for repair is to lap the serrations to the minimum, in order to bring the bore size to minus with enough allowance for internal grinding. For this special purpose machine is used.
We replace the small end bush with a new one if the taper or ovality is on the higher side.
We place the connecting rod on our boring machine equipped with the latest generation of DRDO. We then check the straightness of the connecting rod.
We do not recommend use of any connecting rod which has lost its alignment. No deviation is accepted and it is not recommended to straighten the connecting rod.
We bore the big end and small end simultaneously. This process not only maintains the taper and ovality of both bores but also ensures the center distance between them is accurate.
All the sharp edges are removed after boring operation.
We again perform a dimensional inspection of the connecting rod. We record all the readings.
While returning the connecting rod, proper packing is ensured.

Why Recondition with RA Power Solutions?

Unmatched Expertise: Four decades of proven experience in marine engine component repairs
Cost Savings: Reconditioned rods cost a fraction of new OEM parts—typically ¼ to ⅓ the price
As-Good-As-New Performance: Thorough inspection and repair guarantee performance on par with new rods
Strict Safety Standards: Any rod with alignment deviation or cracks is rejected—safety first

Inspection of Connecting Rod is in Process

For more information on connecting rod repair, reconditioning of connecting rods, engine connecting rods, connecting rod replacement, and repair of connecting rods, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs:

1. What causes damage to a connecting rod?

Damage can occur due to overheating, lack of lubrication, excessive engine load, or metal fatigue over time.

2. Can a damaged connecting rod be repaired instead of replaced?

Yes. If there are no cracks and the geometry is restorable, our technicians can recondition the connecting rod to OEM specifications, saving significant costs compared to buying a new one.

3. How do you check for cracks in a connecting rod?

We perform Magnetic Particle Inspection (MPI) under the supervision of a senior engineer to detect even the smallest cracks in the serrations, bolts, bolt seating area, and the rod body.

4. What happens if the small end or big end is out of tolerance?

We bore both ends simultaneously to correct taper and ovality, ensuring the correct center distance between them. If required, we replace the small end bush.

5. Do you provide connecting rod repair services on-site?

Yes. We can perform inspections and certain repairs at the client’s site, and we also have a fully equipped workshop for complete reconditioning.

The connecting rod of a high-capacity marine engine requires periodic calibration. The marine and power industry has experienced serious accidents due to the failure of connecting rods. Some of the accidents due to failure of the connecting rods have even resulted in complete damage of the engine. RA Power Solutions has undertaken reconditioning and repair … Continue reading “Repair of Connecting Rod for High Capacity Engine – RA Power Solutions”

Metal locking of Engine Block by Experienced Technicians | Bangladesh

At RA Power Solutions Pvt. Ltd., we offer specialized cold metal locking and stitching services for repairing cracked or damaged engine blocks and cast components—without welding or heat damage.

Real-World Case Study: Wartsila 18V32 Engine Block Repair

A power plant engine block of Wartsila 18V32 suffered catastrophic failure due to a connecting rod—and was estimated by OEM at 9 months delivery time and prohibitively high cost.
RA Power Solutions completed the repair onsite, without dismantling the crankshaft or removing major parts, while it remained installed on its foundation. The damaged area exceeded 72″ × 42″.
With over 45 years of experience and more than 1,300 major block repairs, we delivered a cost-effective, fast-response solution with a permanent outcome.

**Metal Stitching & Locking of Crankcase Door is under progress**

Why Choose Our Metal Locking & Stitching Service?

Completely cold process — no heat input or welding means no thermal distortion or damage.
Insitu crankshaft repairs—no transport or dismantling, meaning minimal downtime and operational disruption.
Superior mechanical strength—the stitched repair often regains or exceeds original tensile capacity.
Applications across materials—effective for cast iron, steel, and aluminum in engines, compressors, turbines, pump casings, and more.
Dedicated, experienced technicians who can mobilize worldwide—Metal locking of Engine Block, including vessel boarding with Indian CDC clearance—for fast turnaround.

Our Repair Workflow:

Step	Activity
Crack Detection	Magnetic particle inspection (MPI, Level 2 certified) identifies crack location, length, and severity.
Damage Preparation	Damaged sections are drilled and cleaned for accuracy.
Stitching Key Installation	Special pins and interlocking metal keys are inserted across the fracture.
Surface Finishing	Pins are ground flush; no further machining is required—original profiles are preserved.
Final Checks	Optional pressure testing ensures a gas- or water-tight seal when needed.

For more details regarding metal stitching, metal locking services, repairing cast iron metal lock, cast iron repair, and Metal Locking of engine block at Low Price, email us your query at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs:

1. What is metal locking of an engine block?

It’s a cold repair process to fix cracks in cast iron or steel engine blocks without welding.

2. How does metal locking work?

Special pins and metal locks are inserted across the crack to restore strength without heat.

3. Is metal locking better than welding?

Yes, because it avoids heat distortion, maintains alignment, and prevents further cracking.

4. What materials can be repaired using metal locking?

Cast iron, cast steel, aluminum, and other brittle metals.

5. Can metal locking be done onsite?

Yes, RA Power Solutions offers in-situ repairs worldwide without dismantling the engine.

At RA Power Solutions Pvt. Ltd., we offer specialized cold metal locking and stitching services for repairing cracked or damaged engine blocks and cast components—without welding or heat damage. Real-World Case Study: Wartsila 18V32 Engine Block Repair A power plant engine block of Wartsila 18V32 suffered catastrophic failure due to a connecting rod—and was estimated by OEM … Continue reading “Metal locking of Engine Block by Experienced Technicians | Bangladesh”

Cylinder Liners- New and Reconditioned for Diesel Generating Sets – RA Power Solutions

At RA Power Solutions, We manufacture cylinder liners for high-capacity diesel engines, compressors, rotatory equipments. Cylinder liners are centrifugally cast, machined, and honned. Cylinder liners up to 1500 mm length and 600 mm bore size are manufactured.

Large stock of new diesel engine cylinder liner, cylinder liners of popular make and model of engines is maintained and can be supplied to the end users in a short time. We also develop and manufacture cylinder liners as per the drawing or as per the sample of the cylinder liner provided to us. We have the facility to develop and manufacture even small quantity of cylinder liners if required.

Top Features & Capabilities:

Centrifugally cast, precision-machined, and honed cylinder liners, with lengths up to 1,500 mm and bores up to 600 mm.
Extensive inventory of new liners across popular brands, available for prompt supply.
Reconditioned liners restored to near-original condition, offering long service life and backed by solid performance guarantees.
Each liner goes through in‑house dimensional and metallurgical inspection, and inspection reports can be provided upon request.

Cylinder Liners for Wartsila Diesel Engine

Why Choose Our Cylinder Liners?

Premium metallurgy: Made from alloyed cast iron enriched with chromium, vanadium, and molybdenum for superior wear resistance and thermal conductivity. Graphite content enhances lubrication characteristics.
Cost-effective alternative: Reconditioned liners are significantly less expensive than OEM replacements, with performance almost equal to new liners.
Flexible manufacturing: We can produce liners per customer-drawn specifications or samples, even for small-volume orders

Reconditioned cylinder liners are available in stock in large numbers. We ensure that the wear and tear of cylinder liner bore, and other important dimensions is minimum. The reconditioned cylinder liners supplied by us are as good as new and almost have the same life. We stand guarantee for satisfactory performance of reconditioned cylinder liners.

Supported Engine Brands & Models:

MAN‑B&W
Sulzer
Wartsila
MAK
Deutz
Pielstick
Mitsubishi
Daihatsu
Yanmar
Bergen
Niigata
Himsen
Allen
Stork
MWM
Hanshin
Caterpillar
SKL
Ruston
Paxman
Crepelle
Mirrlees
Alco
ABC, and many more

To get more information regarding cylinder liner manufacturer, clinder head liner, cylinder sleeves of diesel and marine engine contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs:

1. What is a reconditioned cylinder liner?

A reconditioned cylinder liner is a used liner that has been restored to near-original specifications through precision machining, honing, and inspection processes. It performs comparably to new liners at a lower cost.

2. Are reconditioned liners as reliable as new ones?

Yes. When reconditioned properly using standard metallurgical and dimensional processes, they offer durability and performance close to new liners, especially when sourced from certified suppliers.

3. What types of engines are compatible with reconditioned liners?

We supply reconditioned liners for a wide range of diesel engines, including brands like MAN-B&W, Wartsila, Sulzer, Caterpillar, MAK, Mitsubishi, Daihatsu, and many more.

4. Which engines are supported?

We supply liners for MAN, Wartsila, Caterpillar, Mitsubishi, Daihatsu, and more.

5. How do I order?

At RA Power Solutions, We manufacture cylinder liners for high-capacity diesel engines, compressors, rotatory equipments. Cylinder liners are centrifugally cast, machined, and honned. Cylinder liners up to 1500 mm length and 600 mm bore size are manufactured. Large stock of new diesel engine cylinder liner, cylinder liners of popular make and model of engines is … Continue reading “Cylinder Liners- New and Reconditioned for Diesel Generating Sets – RA Power Solutions”

Insitu Crankshaft Grinding Machine – RA Power Solutions

For over four decades, RA Power Solutions has led the industry in portable crankshaft grinding, enabling repair directly on vessels or in power plants—eliminating the need to dismantle or transport heavy engine components.

RA Power Solutions manufactures the insitu crankshaft grinding machine, which is lightweight, portable, and easy to operate. We developed and manufactured this revolutionary equipment.

Globally Deployed Machines & Capabilities:

Designed for crankpin and main journal diameters between 35 mm and 700 mm—covering most diesel engine builds
We have sold over 100 machines worldwide to shipping firms, power plants, and engine workshops. Clients are located in countries like Singapore, Nigeria, Italy, Saudi Arabia, and beyond.
Combines grinding and polishing in one setup, with minimal vibration, maintaining tolerances as tight as 0.02 mm.

Key Features & Benefits:

Feature	Benefit
Compact, lightweight design	Easily fits through engine inspection windows and transports globally with ease
Titanium‑steel vibration‑absorbing frame	Enables grinding even while the vessel is underway, preserving OEM tolerances
Electrical or pneumatic drives	Versatile operation adapted to client’s power infrastructure
On-job training included	Technicians learn how to operate and maintain the equipment directly from RA Power staff
Fully portable toolbox unit	Supplied ready-to-use in a steel box—ideal for rapid site deployment

Why Onsite Grinding Beats Workshop Repairs?

Reduces downtime by eliminating dismantling and logistics
Cuts costs significantly versus sending crankshafts to external workshops
Meets or exceeds OEM specifications, including taper, ovality, and surface finish.
Fully class-approved repair methods and international case studies support machine reliability worldwide.

Proven Track Record

RA Power Solutions’ patented handheld machines have repaired over 10,000 crankshafts worldwide, delivering results trusted by shipowners and industrial clients alike.
Ideal for marine engines, power-plant diesels, turbines, alternators, and general rotary equipment requiring precision journal repairs.

Get in Touch
Need emergency crankshaft repair or onsite polishing? RA Power Solutions offers Insitu Crankshaft Grinding Machine for 24/7 global service with immediate dispatch. Contact us:
Email: rajshahani@rapowersolutions.com or info@rapowersolutions.com

Phone: +91 9582647131 | +91 9810012383

FAQs:

Q1: What is an in-situ crankshaft grinding machine?

Technicians use this portable machine to grind crankshaft journals directly on-site. It eliminates the need to dismantle the engine.

Q2: What crankshaft sizes can your machine handle?

Our machines cover crankpins and main journals ranging from 35 mm to 700 mm in diameter.

Q3: Can the machine be used onboard ships?

The compact, vibration-free design allows technicians to use it on ships—even during voyages.

Q4: What power options are available?

Machines can be operated with either pneumatic or electric power, depending on site conditions.

Q5: Do you provide training with the machine?

Yes, onsite training and support are included to ensure proper operation and maintenance.

For over four decades, RA Power Solutions has led the industry in portable crankshaft grinding, enabling repair directly on vessels or in power plants—eliminating the need to dismantle or transport heavy engine components. RA Power Solutions manufactures the insitu crankshaft grinding machine, which is lightweight, portable, and easy to operate. We developed and manufactured this … Continue reading “Insitu Crankshaft Grinding Machine – RA Power Solutions”

High-Quality Cylinder Liners: Our Expertise & Offerings

At RA Power Solutions, we manufacture new and reconditioned cylinder liners for engines, compressors, generators, and rotating equipment worldwide. Our capacities and quality assurance stand out in the marine and diesel engine industry.

We strictly follow the centrifugal process for casting cylinder liners. The material composition of cylinder liners is maintained strictly as per the manufacturer’s specifications.

Our Capabilities:

Lengths up to 1,500 mm and bores up to 600 mm
We handle liners of heavy-duty dimensions to serve industrial and marine engines.
Centrifugal casting
Using this robust process ensures dense, uniform castings free from blow-holes or porosity.
Machining & honing in-house
A suite of CNC and precision honing machines lets us maintain tight tolerances and surface finish specs.
Rigorous quality inspections
Each liner undergoes dimensional checks, MPI/crack detection, blow-hole inspections, and other metallurgical tests. We provide detailed inspection reports on request.
Manufactured to spec
Whether based on drawings or client samples, we can develop and produce cylinder liners in small or bulk quantities.

Why Choose Our Cylinder Liners?

Features	Benefits
Centrifugal casting	Ensures dense, defect-free castings
Advanced machining and honing	Maintains OEM-level tolerances and finishes
In-house quality control	Guarantees inspection and metallurgical integrity
Flexible manufacturing	Accepts drawings or samples, small-batch capability
Reconditioned liners available	Cost-efective alternative with near-new performance

We have High Quality cylinder liners of the following makes in stock:

ABB, ABC, Anglo Belgian Corporation, Akasaka, Alco Diesel Engines, Alfa Laval, Allen, Alpha Diesel, Alstom, B & W, Bergen Diesel Engines, Blackstone, Bosch, Caterpillar, Cegielski, Consilium, Crepelle, Cummins, Daihatsu, Detroit Diesel, Deutz, DeutzMarine Engine, EMD, Fiat, FUJI, Fuji Diesel, Furuno, Hanshin, Headway, HIMSEN, Holset, Hyundai, JRC, Kawasaki, Kelvin Hughes, Kongsberg Maritime, L’OrangeMaschinenfabrik, MaK, MAN, MAN B&W, Martek Marine, Mirrlees Blackstone, Mitsubishi, Mitsubishi UE/UEC, MTU, MWM, Napier, NAVTEX, Nigata, Nohab Diesel, Paxman, Pielstick, Ruston & Hornsby, Samsung, Simrad, SKL, Sperry, Stork SW Diesel, Stork Werkspoor, STORK-WARTSILA DIESEL, Sulzer, Volvo Penta, Wartsila, Wartsila Diesel, Westfalia, Wichmann, Woodward, Yanmar, etc.

For more information regarding High Quality Cylinder Liners ,cylinder liner repair, email us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs:

Q1: What is a cylinder liner?

A replaceable sleeve inserted into an engine block to form the cylinder bore.

Q2: Why are cylinder liners used?

They improve wear resistance, enable engine overhauls, and extend engine life.

Q3: What’s the difference between dry and wet liners?

Dry liners don’t touch coolant; wet liners do and require sealing.

Q4: Are reconditioned cylinder liners reliable?

Yes, if refurbished to OEM specs—they perform like new at a lower cost.

Q5: What material is used for manufacturing liners?

High-grade alloy cast iron, often made using centrifugal casting.

At RA Power Solutions, we manufacture new and reconditioned cylinder liners for engines, compressors, generators, and rotating equipment worldwide. Our capacities and quality assurance stand out in the marine and diesel engine industry. We strictly follow the centrifugal process for casting cylinder liners. The material composition of cylinder liners is maintained strictly as per the … Continue reading “High-Quality Cylinder Liners: Our Expertise & Offerings”

Metal Stitching and Thread Repair Inserts – RA Power Solutions

One of our clients informed RA Power Solutions about damage to the cam case cover of a MAN diesel engine on board a vessel sailing near China. After reviewing the details and photographs, we observed that the cam case cover had broken into pieces. We also found that the threads on the engine body and the dowel pin were damaged.

RA Power Solutions Executes Onboard Repair of Engine Block and Cam Case Cover Sitting Area:

RA Power Solutions deputed their team of technicians on board the vessel, and they executed the repair of engine block, cam case cover sitting area by the following procedure:

The broken bolt which remained inside the thread hole was drilled out.
The damaged threads on cam cover sitting area on entablature was removed by drilling new blind holes, suiting the new M12 Helicoil thread inserts.
Re-tap holes for the new M12 Helicoil thread inserts was done carefully.
New M12 Helicoil thread inserts were installed in the engine frame/ entablature.
The 2 guide pins for the roller guide housing were removed, taking due precaution.
Technicians installed a new roller guide housing using correct M12 hexagon bolts. They also included the newly introduced 10 mm washers.
Technicians completed the final alignment of the roller guide housing. They then tightened the bolts using the correct tightening torque.
Technicians drilled two ø8 mm guide pinholes in both the roller guide housing and the engine frame. Afterwards, they installed new guide pins.

**repair of Threads on Engine Block Under Process**

**Repair of Thread Hole by Metal Stitching**

What Is Metal Stitching?

Metal stitching, also known as metal locking, uses a cold repair technique to fix cracked or broken cast components. This method eliminates the need for welding. The process restores original strength and ensures pressure-tight sealing through mechanical locking of stitching pins and studs.

Advantages of Metal Stitching Over Welding:

No heat means no distortion, warping, or residual stress
Maintains alignment and surface profile of the original cast
Suitable for cast iron, steel, aluminum, and other alloys
Creates permanent, pressure- and liquid-tight repairs
Enables on-site repairs with minimal disassembly
Often stronger than the original material

Damaged Thread Hole Under Metal Stitching and Metal Locking

Metal Stitching of Bottom Area of Threaded Hole to Give Extra Strength

Our Process at RA Power Solutions:

Damage Inspection & Assessment: Document cracks and thread damage
Thread Repair via Stitching & Inserts: Use stitching keys and Helicoil/insert methods
Post-Repair Finishing: Grind and align to restore original surface
Testing & Validation: Conduct pressure or stress tests to ensure integrity.

With decades of experience and advanced cold-repair tools, RA Power Solutions delivers efficient and durable repairs without removing heavy castings.

Cam Cover Sitting Area of Engine Block After Repair

For more on metal stitching and metal locking, metal stitching of engine block contact us today email us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs:

1. What is metal stitching, and how does it work?

Metal stitching, also known as cold metal locking, is a mechanical repair process used to fix cracks in cast iron or cast steel components. It involves inserting stitching pins and locks to restore structural integrity—without welding or heat.

2. When should I use thread repair inserts like Helicoil?

You should use thread repair inserts when original threads in an engine block, casing, or housing become stripped, worn out, or damaged. Helicoils restore the thread’s strength and allow secure fastening, even under high torque.

3. Is metal stitching better than welding for cast iron repair?

Yes. For cast iron and other brittle materials, metal stitching is safer and more reliable than welding. It avoids heat distortion, cracking, and structural weakening, which are common risks with welded repairs.

4. Can RA Power Solutions perform these repairs on-site?

Absolutely. RA Power Solutions specializes in on-site metal stitching and thread repair, including work on marine vessels, power plants, offshore rigs, and remote industrial sites—without the need to remove the equipment.

5. What components can be repaired using metal stitching and thread inserts?

These techniques can repair engine blocks, cylinder heads, gearboxes, cam case covers, pump casings, compressors, and more. These methods can typically restore any cracked or damaged cast iron or steel component.

One of our clients informed RA Power Solutions about damage to the cam case cover of a MAN diesel engine on board a vessel sailing near China. After reviewing the details and photographs, we observed that the cam case cover had broken into pieces. We also found that the threads on the engine body and … Continue reading “Metal Stitching and Thread Repair Inserts – RA Power Solutions”