Onsite Crankshaft Grinding in Singapore

Singapore, being one of the world’s busiest maritime hubs, demands engine components that perform flawlessly even under the harshest conditions. When a crankshaft develops wear, taper, ovality, or damage, traditional repair often requires removing the engine components, incurring heavy transport expenses, and resulting in costly downtime. In situ crankshaft grinding, also known as onsite crankshaft grinding, offers a smarter alternative. At RA Power Solutions, we specialize in insitu crankshaft grinding and crankshaft repair, delivering high precision, minimal disruption, and cost-effective solutions in Singapore.

What Is Onsite Crankshaft Grinding and Repair?

In situ crankshaft grinding means repairing the crankshaft’s main journals or crankpins without dismantling the engine or removing the crankshaft from its block. By using portable grinding and polishing machines, technicians restore worn or damaged surfaces to OEM standards. Crankshaft repair in this context encompasses grinding, polishing, inspection, and, if necessary, reconditioning of the crankshaft, all performed directly onsite.

onsite crankshaft grinding under process
onsite crankshaft grinding under process
Onsite Crankshaft Machining
Onsite Crankshaft Machining

Why Singapore Needs Insitu Crankshaft Grinding?

  • High Maritime Traffic and Tight Schedules: Vessels docked at Singapore cannot afford long engine-down periods. Onsite services reduce downtime drastically.
  • Industrial Engines and Power Plants: Many industries in Singapore operate heavy-duty diesel or marine engines; delaying repair causes huge production losses.
  • Cost and Logistics: Transporting crankshafts or engines overseas or even across regions involves heavy costs, customs, handling, etc. Onsite services avoid many of these expenses.
  • High Quality and Reliability Demands: Singapore’s regulatory environment and quality expectations require repairs that meet strict OEM tolerances, something insitu crankshaft grinding can deliver.

Our Onsite Crankshaft Grinding and Repair Services in Singapore

At RA Power Solutions, our in situ crankshaft repair in Singapore includes:

  • Portable onsite crankshaft grinding and polishing using machines capable of diameters ranging from approximately 35 mm to 700 mm and meeting OEM tolerances.
  • We perform surface finishing and polishing to restore bearing contact, thereby reducing vibration, noise, and wear.
  • Emergency/on-voyage repairs: Our teams are ready to respond quickly when downtime must be minimized.
Crack DetectionTestof-Wartsila VASA Engine Model
Crack Detection Test of Wartsila VASA Engine Model
inspection of crankshaft machining
inspection of crankshaft machining

Key Benefits:

BenefitExplanation
Reduced DowntimeRepairs happen onsite no removal or long transport, meaning engines are back in operation faster.
Cost SavingsLess labor for dismantling, fewer logistics costs, and lower risk of damage in transit.
Precision and OEM ComplianceWe use grinding machines and techniques to restore taper, ovality, and surface finish to manufacturer specs.
Convenience and FlexibilityRepairs happen onsite, with no removal or long transport, meaning engines are back in operation faster.

Why Choose RA Power Solutions for Onsite Crankshaft Repair in Singapore?

  • Decades of experience worldwide in insitu crankshaft grinding and onsite repair.
  • Machines and technicians are capable of handling crankshaft diameters up to 700 mm.
  • Fast mobilization and emergency response to minimize downtime.
  • Stringent adherence to OEM standards and international quality tolerances.
  • We provide transparent cost estimates and have a strong track record with maritime and industrial clients in Singapore.

RA Power Solutions delivers expert onsite crankshaft grinding and repair services for major engine brands, including Caterpillar, Wartsila, Cummins, Yanmar, Daihatsu, MAN, and MAK. Our certified technicians operate across the Middle East (UAE, Saudi Arabia, Qatar, Bahrain, Kuwait, Oman, Iran, and Iraq) and throughout the Caribbean region, including Trinidad and Tobago, Jamaica, Barbados, and Central America. With advanced portable grinding equipment and 24/7 emergency response, we eliminate costly downtime by performing precision repairs onsite without engine removal, ensuring your operations stay running while meeting OEM specifications.

Crankshaft grinding and polishing
Crankshaft grinding and polishing

For more information regarding insitu crankshaft grinding services, please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.

FAQs:

Q1: What is the difference between crankshaft grinding and in situ crankshaft grinding?

A: Crankshaft grinding normally implies workshop removal and machining; insitu crankshaft grinding repairs the crankshaft onsite without dismantling.

Q2: Can you repair any crankshaft damage using in situ methods?

A: Most surface wear, taper, ovality, and minor damage can be addressed; severe cracks or structural defects may require alternative approaches.

Q3: What size crankshafts can you service?

A: Our onsite grinding and polishing covers crankshaft diameters from approximately 35 mm up to 700 mm.

Q4: How quickly can you respond to an emergency crankshaft repair in Singapore?

A: We aim for rapid mobilization, typically within 24-48 hours, depending on location and severity of damage.

Q5: Will onsite crankshaft grinding affect engine warranties or compliance?

A: When OEM standards are met and documented, compliance is maintained; RA Power Solutions ensures all repair tolerances are within the manufacturer’s specifications.

Singapore, being one of the world’s busiest maritime hubs, demands engine components that perform flawlessly even under the harshest conditions. When a crankshaft develops wear, taper, ovality, or damage, traditional repair often requires removing the engine components, incurring heavy transport expenses, and resulting in costly downtime. In situ crankshaft grinding, also known as onsite crankshaft … Continue reading “Onsite Crankshaft Grinding in Singapore”

Crankpin Bearings for MAK, MAN, Yanmar, and Daihatsu Engines

The crankpin bearing, also known as the rod bearing journal, is essential for attaching the crankshaft to the connecting rod and ensuring smooth rotation under large loads. Top-quality crankpin bearings are used in powerful diesel engines manufactured by MAK, MAN, Yanmar, and Daihatsu to reduce friction, wear, and engine failure.

Tri Metal Bearing
Tri-Metal Bearings

RA Power Solutions: Your Trusted Source

With over 45 years of global engineering excellence, RA Power Solutions maintains a ready stock of both standard and undersized crankpin and main journal bearings for leading engine types, including Yanmar, Daihatsu, MAK, and MAN.

Why undersized bearings matter:

  • After crankshaft grinding, standard-size bearings often no longer fit.
  • Ship owners can’t wait for long delivery leads—undersized bearings must be available immediately to avoid costly downtime.
Undersize Crank Pin Bearings
Undersized Crankpin Bearings

Comprehensive Inventory—Models & Sizes

RA Power Solutions holds a wide range of undersize and standard bearings. A few examples include:

Engine MakeModels & Undersize Ranges
YanmarS185L: 0.80–2.00 mm

6N18AL-DN/DV: 0.40–2.80 mm
Daihatsu6DL-16: 2.50–4.00 mm

5DC-17: 0.50–4.00 mm

5DK-20: up to 5.00 mm

8DKM-28: 0.50–4.00 mm
MAK8M20: 1.00–2.00 mm undersize
MANCME 5L 16/24: 0.50–2.50 mm

6L 23/30 H: select step undersizes

9ASL 25/30: 2.50–4.00 mm undersize

On Site Support—Speed & Precision

  • Technicians often carry undersized bearings directly on site, enabling immediate installation after crankshaft grinding—minimizing engine downtime.
  • Depending on location, bearings can also be dispatched by courier for urgent repairs.
  • All bearings meet strict international quality standards, and RA Power can even manufacture custom sizes if beyond standard specifications.
Undersize crankpin bearing ready for stock
Undersize crankpin bearing ready for stock

Why Choose RA Power Solutions for Crankpin Bearings?

  • Extensive availability of both standard and undersized bearings across top engine makes.
  • Immediate solution: Technicians can fit bearings onsite right after grinding.
  • Customization: Tailored sizes beyond manufacturer limits when needed.
  • Global logistics: Fast courier dispatch ensures timely delivery globally.
  • Quality assurance: Meets strict manufacturing and performance standards.

Need Bearings for MAK, MAN, Yanmar, or Daihatsu Engines?

Contact RA Power Solutions today for reliable, high-precision crankpin bearings:

Email: rajshahani@rapowersolutions.com or info@rapowersolutions.com

Phone: +91-9582647131 / +91-9810012383

FAQs:

1. What is a crankpin bearing?

Crankpin bearing supports the crankshaft and enables smooth rotation under heavy loads.

2. Why do crankpin bearings fail?

They usually fail due to poor lubrication, contamination, or misalignment.

3. Can undersize crankpin bearings be supplied?

Yes, undersize bearings are available after crankshaft grinding.

4. Which engines use crankpin bearings?

Engines like MAK, MAN, Yanmar, and Daihatsu rely on crankpin bearings.

5. Can crankpin bearings be replaced onsite?

Yes, experienced engineers can replace crankpin bearings directly onboard.

The crankpin bearing, also known as the rod bearing journal, is essential for attaching the crankshaft to the connecting rod and ensuring smooth rotation under large loads. Top-quality crankpin bearings are used in powerful diesel engines manufactured by MAK, MAN, Yanmar, and Daihatsu to reduce friction, wear, and engine failure. RA Power Solutions: Your Trusted … Continue reading “Crankpin Bearings for MAK, MAN, Yanmar, and Daihatsu Engines”

Undersized Bearings & Crankpin Bearings for Marine and Diesel Engines

When it comes to marine and diesel engines, we at R A Power Solutions know that accuracy and dependability are not optional; they are required. That’s why we’re happy to have a large inventory of undersized bearings and crankpin bearings in stock, available to ship right away. We make and store parts that fulfill the highest engineering standards for ships, power plants, and industrial generators.

Undersized Bearings in Stock – Ready for Dispatch

We currently stock high-quality undersized bearings for the following diesel and gas engine models:

YANMAR Diesel Engine Bearings

  • 6N18AL-DN / DV — Diameter: 145 mm
  • YANMAR S185L — Diameter: 140 mm

MAN Diesel Engine Bearings

  • CME 5L 16/24 — Standard Diameter: 130 mm
  • MAN 9ASL 25/30 — Standard Diameter: 195 mm
  • MAN 6L 23/30 H — Standard Diameter: 185 mm

Daihatsu Diesel Engine Bearings

  • 5DK20 — Standard Diameter: 170 mm
  • 5DC-17 — Standard Diameter: 145 mm
  • 6DL-16 — Standard Diameter: 120 mm
  • 8DKM28 — Standard Diameter: 235 mm

Allen Engine Bearings

  • PVBCS 12 F — Standard Diameter: 190.45 mm to 190.47 mm

Gas Engine Bearings

  • DEUTZ MWMTBG32V16 — Diameter: 204.50 mm

 MAK Diesel Engine Bearings

  • 8M20 — Standard Diameter: 152 mm

Crankpin Bearings for Different Engine Models—Engineered by R A Power Solutions

Crankpin bearings play a crucial role in ensuring that large diesel engines operate smoothly. These bearings hold up the crankshaft journal so that it can turn under large loads and high temperatures. This is especially important in marine engines, power plants, and heavy-duty industrial generators. 

High-Precision Manufacturing by R A Power Solutions

We design and supply custom crankpin bearings compatible with a wide variety of engine models and applications. With over 45 years of engineering excellence, we’ve become a globally trusted name in the reconditioning and supply of engine components. Our crankpin bearings are known for:

  • OEM-standard manufacturing
  • Precise fitting and clearances
  • Long service life, even in extreme conditions
crankpin bearings for different type of engines
crankpin bearings for different type of engines

Commitment to Quality Service

At R A Power Solutions, quality is more than just a policy—it’s our promise. Our services are designed to provide not only parts but end-to-end support:

  • Rigorous Quality Control
    Every bearing is tested for tolerances, metallurgy, and durability before dispatch.
  •  Technical Engineering Support
    Our experienced technicians offer fitting assistance, on-site installation, and application analysis.
  • Global Reach & Fast Dispatch
    With inventory in stock and a network of logistics partners, we deliver promptly worldwide.
  • Reliable Customer Support
    Our team is available around the clock to assist with orders, queries, or technical guidance.

Get in Touch Today

Whether you need undersized bearings, crankpin bearings, or expert guidance on engine part replacements, R A Power Solutions is here to help.

FAQs

1. What are undersized bearings and when should they be used in marine engines?

Customers often want to understand the specific conditions under which undersized bearings are recommended over standard ones.

2. How can I determine the correct undersize for crankpin bearings after regrinding the crankshaft?

This is a practical concern for engineers and ship owners who need precise bearing dimensions after crankshaft repair.

3. Are undersized bearings as reliable and durable as standard bearings in diesel engines?

Reliability is a key concern, especially in heavy-duty marine applications where failure can be costly.

4. Can I reuse crankpin bearings after a crankshaft has been ground undersize?

Some customers look for cost-saving options and need clarity on whether reused or new undersized bearings are necessary.

5. Do you supply custom undersized crankpin bearings for specific engine models like MAK, MAN, or Wartsila?

Many users have brand-specific engines and want assurance of compatibility and availability.

When it comes to marine and diesel engines, we at R A Power Solutions know that accuracy and dependability are not optional; they are required. That’s why we’re happy to have a large inventory of undersized bearings and crankpin bearings in stock, available to ship right away. We make and store parts that fulfill the … Continue reading “Undersized Bearings & Crankpin Bearings for Marine and Diesel Engines”

Why Onsite Inspection of Crankshaft Matters?

When serious machinery stops due to crankshaft issues, downtime and repair costs can skyrocket. Onsite inspection of crankshafts offers a smarter solution: bringing precision diagnostic tools right to the equipment, whether at sea, in a power plant, or on heavy-duty industrial engines. This method helps engineers identify wear, cracks, and misalignment without removing the crankshaft from its engine housing.

Core Steps in Onsite Crankshaft Inspection

Visual Examination: Check crankpin journals, oil holes, fillets, and counterweights for scoring, discoloration, or surface defects

Dimensional Measurements: Use micrometers and dial indicators to assess journal diameters, ovality, taper, and run‑out tolerances

Hardness Testing: Portable hardness testers confirm material strength and surface treatment integrity

Crack Detection: Utilize non-destructive methods, such as magnetic particle inspection, dye penetrant testing, or ultrasonics, to detect hidden cracks.

Surface Finish Check: Profilometers assess roughness to ensure the surface meets OEM standards.

Inspection of onsite crankshaft machining
Inspection of onsite crankshaft machining

Advantages of Onsite Over Workshop Inspection

  • Zero Transportation Risk & Downtime
    Avoid dismantling, shipping delays, and handling mistakes by inspecting in place.
  • Fast, Cost‑Effective Solutions
    Field diagnostics and repair plans are generated immediately, minimizing production losses
  • Precision Checks with Portable Tools
    Onsite techniques maintain OEM tolerances through calibrated gear and experienced technicians.
Onsite Inspection of Crankpin Before Polishing & Grinding
Onsite Inspection of Crankpin Before Polishing & Grinding
Onsite Inspection of Crankshaft Grinding Machine

Common Issues Caught by Onsite Inspection

Crankshaft Cracks: Even faint stress lines become visible through NDT methods during routine checks.

Excessive Wear or Ovality: Regular measurement helps catch taper or roundness issues early and avoid journal failure.

Surface Damage: Polishing, grinding, or realignment can be scheduled ahead of major malfunctions.

The Role of Mobile In‑Situ Grinding & Repair

  • In many cases, after inspection, it’s faster to grind or polish the onsite crankshaft using portable precision tools. This method:
  • Restores OEM tolerances
  • Straightens bent shafts
  • Smooths surface imperfections
  • Requires no crankshaft removal
Onsite Crankshaft Grinding and Polishing under process

Why Choose RA Power Solutions?

  • 45+ Years of Expertise
  • 24/7 Worldwide Availability
  • Portable, OEM-Grade Equipment
  • In-House Manufacturing of Tools
  • ISO Certified Services
  • Strong Client Portfolio Across Marine, Power & Industrial Sectors
Crankpin Ready After Grinding and Polishing
Crankpin Ready After Grinding and Polishing

Boost Reliability with RA Power Solutions

If you’re facing crankshaft issues or planning preventive maintenance, trust a company that brings the workshop to your engine. With RA Power Solutions, you get high-quality on site inspection of crankshaft services without delays, disassembly, or extra cost.

For more details on the Onsite Inspection of Crankshaft, Onsite Crankshaft Repair, or email us at info@rapowersolutions.com. Call at +91-9582647131,+91 9810012383.

FAQs:

1. What is an onsite inspection of a crankshaft?

Onsite crankshaft inspection involves checking the condition of the crankshaft at the equipment’s location, without removing it from the engine. It includes dimensional checks, crack detection, hardness testing, and alignment verification.

2. What are the benefits of insitu crankshaft repair?

Insitu crankshaft repair minimizes downtime, avoids expensive transport or disassembly, and restores crankshaft geometry quickly. It’s a cost-effective solution for marine, industrial, and power plant engines.

3. How long does onsite crankshaft inspection and repair take?

Most inspections are completed within a few hours. If grinding or straightening is needed, the repair process may take 1–2 days, depending on the extent of damage and the number of journals involved.

When serious machinery stops due to crankshaft issues, downtime and repair costs can skyrocket. Onsite inspection of crankshafts offers a smarter solution: bringing precision diagnostic tools right to the equipment, whether at sea, in a power plant, or on heavy-duty industrial engines. This method helps engineers identify wear, cracks, and misalignment without removing the crankshaft … Continue reading “Why Onsite Inspection of Crankshaft Matters?”

Onsite Crankshaft Repair And In Situ Crankshaft Grinding Services – Comprehensive Guide

In the world of marine, industrial, and power generation engines, crankshaft damage can bring operations to a standstill. Fortunately, onsite crankshaft repair and in situ crankshaft grinding services have revolutionized the way industries handle such emergencies, eliminating the need for disassembly or transportation.

What Is Onsite Crankshaft Repair?

Onsite crankshaft repair (also known as crankshaft repair onsite or on site crankshaft repair) refers to the process of repairing crankshaft damage directly at the site of operation. Whether on a vessel, power plant, or offshore platform, this service ensures minimal downtime and cost-effective solutions. The combination of onsite crankshaft grinding and repairing results in extended crankshaft life and improved engine performance.

In Situ Crankshaft Grinding: The Modern Solution

In situ crankshaft grinding, also known as insitu crankshaft grinding, is a specialized process where the crankshaft is ground in its original position using a customized onsite crankshaft grinding machine. This technique ensures perfect alignment and eliminates the need for dismantling. Our team provides advanced onsite crankshaft grinding services, ensuring the crankpins and main journals are restored to the original manufacturer’s specifications.

Why Choose In Situ Crankshaft Repair Services?

  • Fast turnaround
  • Eliminates transportation costs
  • Precision results with portable machines
  • Minimal downtime and disruption
  • Environmentally friendly approach

Complete Onsite Crankshaft Grinding and Polishing

After grinding, the next critical step is crankshaft polishing. Our crankshaft polishing services use high-grade abrasives to enhance surface finish and increase longevity. The combination of onsite crankshaft grinding and polishing results in extended crankshaft life and improved engine performance.

Crankpin Repair and Insitu Machining Expertise

We specialize in onsite crankpin repair, which involves insitu machining of the crankpin to restore it to its standard size and finish. Our technicians use precision-engineered tools for insitu grinding of crankpins, ensuring accurate geometry and surface integrity.

With years of experience in insitu crankshaft machining, we have developed efficient solutions for all types of crankshaft issues, including scoring, taper wear, and journal ovality.

High-Precision In Situ Crankshaft Machining Services

In situ crankshaft machining or on site crankshaft machining is the ideal solution when engine components are too large or critical to be moved. We deploy skilled engineers with portable tools to provide in situ crankshaft machining with micron-level accuracy.

Our in situ crankshaft repair services are trusted worldwide for large engine applications including marine engines, diesel generators, and industrial compressors.

Why Our Services Stand Out

We utilize a state-of-the-art in situ crankshaft grinding machine that can handle crankshafts up to 700mm in diameter. Our mobile teams are available globally to deliver emergency onsite crankshaft grinding repair and insitu crankshaft grinding repair anytime, anywhere.

With our holistic approach, we cover every aspect:

When engine downtime is not an option, trust our expert in situ crankshaft repair services. With advanced tools, skilled technicians, and decades of experience, we offer the most reliable onsite crankshaft grinding, crankshaft repair on site, and crankpin repair solutions globally. For efficient, cost-effective, and precision onsite crankshaft grinding services, contact our team today and keep your engines running smoothly.

FAQ

1. What is the difference between onsite crankshaft repair and in situ crankshaft grinding?

Onsite crankshaft repair is a broader term that includes all types of crankshaft repair work done at the client’s location. In situ crankshaft grinding is a specific process within that service, involving precision grinding of the crankshaft journals or crankpins in their original position using portable machines.

2. Can crankshaft repair be done without removing the crankshaft from the engine?

Yes, our in situ crankshaft grinding and repair services allow us to perform repairs without dismantling the crankshaft from the engine, saving time and reducing costs.

3. How long does onsite crankshaft grinding usually take?

The duration depends on the extent of damage and the number of crankpins or journals to be repaired. Typically, a single crankpin can be ground within 24–30 hours, including inspection, setup, and final polishing.

4. What types of engines can you repair onsite (marine, power plant, etc.)?

We service marine engines, diesel power plant generators, offshore equipment, and large industrial compressors. Our technicians are experienced in handling all major engine makes and models.

5. What is the maximum diameter crankshaft you can grind onsite?

Our portable in situ crankshaft grinding machine can handle crankshafts up to 700 mm in diameter.

In the world of marine, industrial, and power generation engines, crankshaft damage can bring operations to a standstill. Fortunately, onsite crankshaft repair and in situ crankshaft grinding services have revolutionized the way industries handle such emergencies, eliminating the need for disassembly or transportation. What Is Onsite Crankshaft Repair? Onsite crankshaft repair (also known as crankshaft … Continue reading “Onsite Crankshaft Repair And In Situ Crankshaft Grinding Services – Comprehensive Guide”

Onsite Crankshaft Grinding and Repair Services

When it comes to maintaining heavy-duty machinery, engine performance and reliability are crucial. At the core of every engine lies the crankshaft, a component that demands precise maintenance to ensure consistent operation. Traditionally, repairing a damaged crankshaft required complete disassembly and transportation to a workshop, resulting in extended downtime and high costs. Fortunately, modern advancements have introduced in situ crankshaft grinding machines, making it possible to perform repairs directly at the site, eliminating the need for dismantling.

Overview of onsite crankshaft grinding and repair

Understanding In Situ Crankshaft Grinding Machines

In situ crankshaft grinding machines are specialized tools designed to repair and restore crankshafts directly within the engine assembly. These machines eliminate the need to remove the crankshaft from the engine block, thereby reducing downtime and associated costs. They are particularly beneficial in situations where only one or two crank pins are damaged, making it uneconomical to send the entire crankshaft to a distant workshop.

crankshaft grinding and polishing under process

Advantages of On Site Crankshaft Repair

  • Reduced Downtime: The ability to conduct onsite crankshaft repair means equipment can be restored swiftly without disassembly or transport.
  • Cost Savings: Avoids the need for dismantling and shipping large engine components.
  • OEM Compliance: Advanced in situ crankshaft repair services meet or exceed original equipment manufacturer (OEM) specifications.
  • Versatility: Suitable for onsite crankpin repair, crankshaft polishing services, and full crankshaft repair onsite.

Why Choose Onsite and In Situ Crankshaft Machining?

  • Quick turnaround time
  • No transportation of heavy engine blocks
  • Consistent results with minimal vibration
  • Services like in situ crankshaft grinding repair and on site crankshaft machining are available globally.

This method also supports in situ crankshaft machining and in situ crankshaft repair for engines that have suffered wear, ovality, scoring, or bearing failures.

Inspection of the crankpin before grinding

Why Choose RA Power Solutions

RA Power Solutions stands out as a leader in the field of in situ crankshaft grinding, offering comprehensive onsite crankshaft repair services globally. With decades of expertise, state-of-the-art equipment, and a team of highly skilled technicians, RA Power Solutions ensures minimal downtime and OEM-standard accuracy in every crankshaft repair. Whether it’s onsite crankshaft grinding, insitu machining & polishing of crankshaft, or urgent crankpin repair.

Crankpin after grinding and polishing
Crankpin after grinding

For more details of the Insitu Crankshaft Grinding Services, In Situ Crankshaft Grinding, or email us at info@rapowersolutions.com, Call at +91-9582647131,+91 9810012383.

When it comes to maintaining heavy-duty machinery, engine performance and reliability are crucial. At the core of every engine lies the crankshaft, a component that demands precise maintenance to ensure consistent operation. Traditionally, repairing a damaged crankshaft required complete disassembly and transportation to a workshop, resulting in extended downtime and high costs. Fortunately, modern advancements … Continue reading “Onsite Crankshaft Grinding and Repair Services”

Crack Repair Using Metal Stitching and Metal Locking | RA Power Solutions

Cracks in cast iron and other metal components can lead to significant operational challenges in the power generation, marine, manufacturing, and heavy engineering industries. Traditional repair methods, like welding, often introduce thermal stress, weakening the material over time. With over 44 years of experience, RA Power Solutions specializes in metal stitching and metal locking, two highly effective cold repair techniques that restore the integrity of cracked components without causing additional damage.

What is Metal Stitching?

Metal stitching is a cold repair method for mending cracks in cast iron, aluminum, and other metals without welding. It involves drilling precise holes along the crack, inserting metal stitching pins, and locking the pieces together to restore the component’s original strength. This technique is ideal for engine blocks, turbine casings, compressors, and other high-stress industrial machinery parts.

Metal stitching and Metal locking
Metal stitching and Metal locking

What is Metal Locking?

Metal locking is a reinforcement method used alongside metal stitching. Custom-designed locks are inserted into the stitched area to provide additional support, preventing further crack progression and ensuring a long-lasting repair. This method enhances the durability of the repaired component, making it as strong as or even stronger than the original structure.

metal locking
Metal locking

Why Choose Metal Stitching and Metal Locking?

Compared to traditional welding, metal stitching and locking offer several advantages:

  1. Cold Repair Process: No heat is applied, preventing material distortion, stress buildup, and further cracking.
  2. Onsite Repairs: No need to transport heavy machinery; repairs can be performed at the client’s location, reducing downtime.
  3. Retains Original Strength: Unlike welding, which can weaken cast iron, metal stitching and metal locking maintain or even improve the structural integrity.
  4. Cost-Effective: Eliminates the need for expensive replacements and reduces overall maintenance costs.

Benefits of Metal Stitching and Metal Locking

RA Power Solutions has successfully performed repairs for various industries, including:

  • Marine Industry: Repairs on ship engine blocks and connecting rods to avoid costly replacements.
  • Power Plants: Restoration of turbine casings, generators, and compressors to maintain efficiency.
  • Manufacturing Plants: Fixing cracks in heavy-duty machines and industrial equipment.

RA Power Solutions provides metal stitching and metal locking services in countries across Asia, the Middle East, Europe, Africa, and the Americas, including India, UAE, USA, UK, Saudi Arabia, Germany, Singapore, and Australia. With a strong global presence, the company offers onsite repair solutions for industries like marine, power plants, and heavy engineering, helping clients avoid costly replacements and downtime. Their expertise extends to Malaysia, Indonesia, Qatar, Oman, Kuwait, Bangladesh, Sri Lanka, the Philippines, Vietnam, Nigeria, Brazil, Germany, Singapore, Malaysia, Indonesia, and South Africa, ensuring reliable crack repair services worldwide.

Crack repair by metal stitching
Crack repair by metal stitching

For more information regarding repair cast iron, repair crack cast iron, or cast iron repair,  crack repair by metal stitching and metal locking, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.




Cracks in cast iron and other metal components can lead to significant operational challenges in the power generation, marine, manufacturing, and heavy engineering industries. Traditional repair methods, like welding, often introduce thermal stress, weakening the material over time. With over 44 years of experience, RA Power Solutions specializes in metal stitching and metal locking, two … Continue reading “Crack Repair Using Metal Stitching and Metal Locking | RA Power Solutions”

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

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

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

Following are the major Engine and Crankpin details:

S. No.Engine and Crankpin Details
1.Engine MakeHIMSEN HYUNDAI
2.Engine Model6H 17/28
3.Crankpin Diameter Standard175.00MM
4.Crankpin Bearing Width60.00 MM
5.Place of Execution of Grinding of CrankpinMIP Mersin, Turkey
6.Name of Shipping CompanyReputed Company from Italy

Key Observations of the Crankshaft:

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

MPI Test Before Crankshaft Grinding and Repair
MPI Test Before Crankshaft Grinding and Repair

HIMSEN HYUNDAI 6H 17 28 Before Grinding and Polishing
HIMSEN HYUNDAI 6H 17 28 Before Grinding and Polishing

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

SIZE OF CR PINS BEFORE REPAIR
AAaCCcBBbMinSTDOvality
CR-1 174.74174.85174.62174.73174.66174.88174.62175.000.38MM
CR-2  174.83174.92174.80174.78174.83174.93174.78175.000.22MM
CR-3  174.70174.90174.55174.69174.48174.54174.48175.000.52MM
CR-4  174.78174.88174.79174.72174.79174.92174.72175.000.28MM
CR-5  174.78174.88174.76174.92174.72174.78174.72175.000.28MM
CR-6  174.22174.80174.14174.78174.37174.85174.14175.000.86MM

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

MPI Test of HIMSEN HYUNDAI 6H 17 28
MPI Test of HIMSEN HYUNDAI 6H 17 28 Before Grinding

Actions Taken by RA Power Solutions Technicians:

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

Final Report After Grinding is Pasted Below:

SIZE OF CR PINS AFTER REPAIR
AAaCCcBBbMinU/SOvality
CR-1173.48173.49173.49173.48173.50173.50173.48173.500.02MM
CR-2173.98173.99174.00173.99173.98173.99173.98174.000.02MM
CR-3173.49173.50173.50173.48173.49173.50173.48173.500.02MM
CR-4173.98173.99173.98174.00173.98174.00173.98174.000.02MM
CR-5173.99173.99173.98174.00173.98173.99173.98174.000.02MM
CR-6173.48173.49173.49173.50173.50173.48173.48173.500.02MM


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

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

CR Pin After Grinding of HIMSEN HYUNDAI
CR Pin After Grinding of HIMSEN HYUNDAI

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

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

FAQs

1. What is onsite crankshaft repair for HIMSEN HYUNDAI 6H 17/28 engines?

Onsite crankshaft repair for HIMSEN HYUNDAI 6H 17/28 engines by RA Power Solutions involves in-situ grinding and polishing of crankpins and main journals without shaft removal. This saves downtime, avoids disassembly, and restores crankshaft dimensions as per OEM standards.

2. How is crankshaft grinding performed on ships in Turkey?

RA Power Solutions performs crankshaft grinding on ships in Turkey using portable, high-precision equipment. The process includes inspection, in-situ grinding, and polishing of crankpins or main journals, all done onboard without shaft removal, ensuring minimal downtime and cost.

3. What are the benefits of in situ crankshaft repair on HIMSEN engines?

In-situ crankshaft repair on HIMSEN engines by RA Power Solutions reduces downtime, eliminates the need for shaft removal, and avoids costly dismantling and transport. It ensures fast, cost-effective restoration of crankpins or main journals to OEM specifications onboard the vessel.

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

Peroni Pompe Crankshaft Repair | Save Crankshaft From Rejection

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

Onsite Machining Of Peroni Pompe Italy Crankshaft
Onsite Machining Of Peroni Pompe Italy Crankshaft

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

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

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

  1. It was jointly decided with the client to undertake grinding of all three crankpins to the first step size of 0.5mm.
  2. The grinding of crankpin was executed onsite, and the final diameter was maintained between 214.48 and 214.50 mm.
  3. We are giving below the dimensions of the crankpin before and after the grinding job was executed by RA Power Solutions.
Insitu Machining & Polishing Of Crankshaft Of Peroni Pompe Italy
Insitu Machining & Polishing Of Crankshaft Of Peroni Pompe Italy

Size of CR Journal

AAaCCcBBbMinMaxOvality
CR-1 Before214.95214.96214.95214.92214.88214.88214.88214.960.08mm
CR-1 After214.48214.48214.49214.48214.49214.50214.48214.500.02mm
CR-2 Before214.88214.89214.92214.94214.88214.93214.88214.940.06mm
CR-2 After214.48214.50214.49214.48214.50214.49214.48214.500.02mm
CR-3 Before214.69214.84214.87214.83214.80214.81214.69214.870.18mm
CR-3 After214.49214.50214.50214.49214.49214.48214.48214.500.02mm

Undersize Crankpin Bearing for Peroni Pompe

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

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

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

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

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

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

Babbitt Bearings | Cylinder Liner Exporter

Babbitt Bearings play a very important role in the operation of heavy industrial machinery, Diesel engine, Turbine, alternators, etc. It is important that the quality of Babbitt Bearing used is proven and meets all international standards and technical specifications.

RA Power Solutions having 41 years of experience in undertaking onsite repair of shafts understand the importance of high quality and reliability of babbitt bearing.

We undertake onsite grinding, polishing, and repair of shafts up to 700 mm diameter. We manufacture new babbitt bearings or undertake babbitting of old bearings.

The shafts on which we regularly work are as follows:

  • Crankpin and main journal of the crankshaft of main engine, auxiliary engine, compressor, etc.
  • Electrical Motor shafts diameter ranging from 35 mm onwards.
  • Turbine shaft, Rotor shaft, and Alternator shaft used in the Power sector.
  • Compressor, Crankpin, and main journal.

RA Power Solutions manufactures and supplies all over the world, babbitt bearing of different grades of white metal. All white metal babbitt bearings supplied by us stand guarantee for satisfactory performance.

In order to maintain the high quality and international standard of Babbitt Bearing we follow the latest manufacturing process gist of which is given below:

Manufacturing steps for Babbitt Bearings:

  • Selection of outer casing of bearing is done keeping in view the application of the bearing load, the characteristic of designing, and various other factors. The outer bearing casing can be of forged steel, casting of MS pipe. 
  • After machining the bearing steel shell is subject to grit blasting.
  • The bearing shell at this stage is subject to NDT which includes crack detection, hardness test, ultrasound.
  • The babbitt white metal casting is done on the centrifugal machine where the babbitt white metal temperature is controlled.

This procedure of centrifugal casting of babbitt white metal ensures uniform and strong bonding with the steel shell. After final machining, all the bearings are subject to an ultrasound test to check the bonding of the babbitt white metal.

White Metal Babbitt Bearing
White Metal Babbitt Bearing
Babbitt Bearing
Babbitt Bearing

Cylinder Liner manufacturer and exporter

RA Power Solutions has emerged as a leading manufacturer and exporter of cylinder liner. The Cylinder liners are manufactured by us for all popular makes & models of the main engine, auxiliary engine, compressor.

The Cylinder Liners up to 1500 mm in length are manufactured by a centrifugal casting process.

The machining of the liner is undertaken in-house maintaining all the dimensions strictly as per the OEM standard.

We regularly develop and manufacture cylinder liners for Diesel Engine, compressors, rotating equipment manufacturing which is discontinued. We develop and manufacture cylinder liners as per the drawing or sample provided by our client.

For the development and manufacturing of heavy-weight cylinder liners, we have a team of engineers who visit the plant or vessel with all necessary instruments and CAD/CAM. They prepare the drawing of heavy cylinder liners on the spot and cylinder liners are manufactured according to the drawing prepared by our engineer. 

We have been regularly exporting the bearings/ cylinder liners to Bahrain, Bangladesh, Bhutan, Brunei, Burma, Cambodia, East Timor, Georgia, Hong Kong, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Laos, Lebanon, Malaysia, Mongolia, Nepal, North Korea, Oman, Papua New Guinea, Philippines, Qatar, etc.

Cylinder Liners & Cylinder Sleeves for CKD Skoda Engine
Cylinder Liners & Cylinder Sleeves for CKD Skoda Engine
Cylinder Liners
Cylinder Liners

This blog is written by Mr. Raj Shahani (Managing Director of RA Power Solutions India Pvt. Ltd.).

Mr. Shahani is a highly experienced business leader with rich experience of more than 40 years in the field of Power, Heavy, and Shipping industries. He is a Technical Adviser to many shipping and heavy industries across the globe.

Mr. Shahani is one of the most enthusiastic professional, and he has all the brilliance of an exemplary leader. Mr. Shahani is an extremely effective coach and mentor of teams and is adept at providing leadership in a global, cross-cultural environment.

For more information on bearing manufacturing company, cylinder liners exporter, white metal bearing alloy ingot, and for your requirements of cylinder liners contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.

Babbitt Bearings play a very important role in the operation of heavy industrial machinery, Diesel engine, Turbine, alternators, etc. It is important that the quality of Babbitt Bearing used is proven and meets all international standards and technical specifications. RA Power Solutions having 41 years of experience in undertaking onsite repair of shafts understand the … Continue reading “Babbitt Bearings | Cylinder Liner Exporter”