Crankpin Bearings Supplier & Exporters in Russia | RA Power Solutions

In marine engine maintenance, crankpin bearing condition directly affects engine reliability. During an overhaul, the RA Power Solutions team pays close attention to the crankpin journal, bearing condition, oil clearance, and the evidence left by previous running. A bearing may show wiping, local overheating, or fatigue damage even when the engine has continued to operate. These findings must be investigated before the engine is returned to service.

We supply crankpin bearings, including tri-metal bearings, for marine diesel engines and industrial engine applications. We also undertake crankshaft grinding and repair services where the crankpin or main journal has suffered wear or surface damage. Our work is intended for vessel operators, ship repair facilities, marine engineering contractors, and power plant maintenance teams that need a practical repair solution based on actual measurements.

For customers operating in Russia, these requirements are relevant to marine and industrial equipment maintained around major ports and ship repair centres such as St. Petersburg, Murmansk, Novorossiysk, and Vladivostok. Russia’s marine sector also includes vessels operating in Arctic conditions and industrial facilities that depend on diesel engine generator sets. The bearing specification must be established for the particular engine and application rather than selected by dimensions alone.

Tri-Metal Crankpin Bearings for Marine Diesel Engines

Tri-metal bearings are used in a range of heavy-duty engine applications, including marine diesel engines and stationary power generation equipment. Their layered construction combines a steel backing with bearing alloy layers designed to support the journal under operating loads. The exact material composition and construction depend on the bearing design and engine manufacturer.

In service, the bearing operates with a lubricating oil film between the journal and the bearing surface. This hydrodynamic lubrication is essential for controlling friction and limiting direct metal contact. If the oil supply is interrupted, the clearance is incorrect or the crankpin surface is damaged, the bearing can overheat and deteriorate quickly.

When supplying tri-metal crankpin bearings, we check the engine model, bearing part number, bearing dimensions, and the required clearance. We also establish whether the crankshaft remains at its standard dimensions or has previously been ground to an approved undersize. This matters because a bearing must match the actual journal dimensions and the engine manufacturer’s requirements.

A replacement bearing should not be selected solely because its nominal dimensions appear to match the removed shell. We need to establish the correct specification before installation.

Yanmar Engine Crankpin Bearings Suppliers — **Marine Diesel Engine Crankpin Bearings**

Tri-Metal Crankpin Bearings for Marine Diesel Engines — **Marine Diesel Engine Crankpin Bearings**

Crankpin Inspection Before Grinding or Bearing Replacement

When a crankshaft is presented for repair, the first step is to establish its actual condition. We inspect the crankpin journal for scoring, local overheating, surface distress, and signs of bearing material transfer. The measurements then determine whether the journal can remain within its existing limits or requires further work.

The main checks include:

Journal diameter: Measured at multiple positions to establish the actual dimensions.
Ovality: Evaluated by measuring the journal in different angular positions.
Taper: Checked across the journal width to identify dimensional variation.
Surface condition: Examined for scoring, overheating, bearing material transfer, and other surface damage; crack detection is carried out where required by the inspection findings or applicable repair procedure.
Fillet radius: Checked against the applicable engine manufacturer’s requirements.
Surface finish: Verified against the specified Ra surface finish requirements after machining.
Bearing clearance: Established from the measured journal dimensions and the applicable bearing specification.

We compare the inspection results with the OEM limits before deciding on a repair method. The allowable regrind diameter, fillet radius, and final surface finish are engine-specific. They must not be assumed from a general bearing catalogue.

Where dimensional checks indicate that grinding is necessary, the repair must preserve the required crankpin geometry. An acceptable diameter alone does not establish that a crankshaft is fit for service.

Crankshaft Grinding and Repair Services

Crankshaft grinding is used to restore a journal to an approved diameter and surface condition when wear or damage exceeds the permitted limits for continued operation. The available repair method depends on the crankshaft design, the extent of damage, and the applicable OEM repair instructions.

Our crankshaft grinding and repair work focuses on restoring the required journal dimensions while maintaining the specified geometry. We pay particular attention to journal diameter, ovality, taper, fillet radius and surface finish. These measurements need to be assessed together because a journal that meets the diameter requirement may still be unsuitable if its geometry or surface condition is outside the permitted limits.

Where the engine design and OEM instructions permit grinding to an undersize, the corresponding undersize bearing must be identified before the repair is finalised. Availability can be a concern for older engines and equipment whose original spare parts are difficult to obtain. Establishing the required bearing size early helps the maintenance team plan the work and avoid unnecessary delays during an overhaul.

The repair scope also depends on access to the crankshaft. During a drydock period or a major engine overhaul, dismantling and inspection may be more straightforward. For an engine that remains installed onboard, access, lifting arrangements, available working space and the vessel’s operating schedule can restrict the work. In-situ repair may be appropriate in some cases, but the proposed method must be technically suitable for the actual damage.

CKD Skoda Bearing — Crankpin Bearings for Different Engine Models

SKODA Bearing — Crankpin Bearings for Different Engine Models

Crankpin Bearings for Ships and Power Plants in Russia

Marine operators and industrial maintenance teams in Russia may require crankpin bearings for propulsion engines, auxiliary engines, and stationary diesel generator sets. The correct bearing specification depends on the engine model, operating conditions, and the manufacturer’s dimensional requirements.

Relevant marine service and logistics locations include St. Petersburg, Murmansk, Novorossiysk, and Vladivostok.

Power plant applications require the same attention to engine identification and dimensional compatibility. Before confirming a bearing supply, we recommend obtaining the engine manufacturer, engine model, bearing part number, and any available journal measurement records. If the crankshaft has already been ground, the current journal diameter and approved undersize specification are particularly important.

We assess each requirement according to the information available for the particular engine. This reduces the risk of supplying an incorrect bearing size or selecting a bearing that does not meet the required operating clearance.

OEM Tolerances and Classification Requirements

For engines installed on classed vessels, crankshaft and bearing repairs must be assessed in accordance with the applicable OEM instructions and the vessel’s survey requirements. Depending on the vessel’s class, flag, and scope of repair, the applicable classification society may include DNV, ABS, Lloyd’s Register, or another recognized class society.

The inspection records should identify the measured journal dimensions, the repair carried out, and the final dimensions after machining. Where required, the repair procedure and inspection results must be submitted for review by the relevant surveyor or responsible technical authority.

We do not treat a generic tolerance as a substitute for the manufacturer’s limits. Permissible undersize, bearing clearance, surface finish, and fillet geometry vary between engine designs. The applicable technical documentation should determine the acceptance criteria.

Information Required for a Bearing or Crankshaft Repair Enquiry

To assess a crankpin bearing requirement accurately, please provide the following details where available:

Engine manufacturer and model.
Vessel name or industrial equipment application, where relevant.
Crankpin or main journal bearing part number.
Standard or existing undersize dimensions.
Measured journal diameter, ovality and taper, if available.
Photographs of the bearing and crankpin surface.
Details of any previous grinding or crankshaft repair.
Required delivery location in Russia or elsewhere.

Crankpin Undersized Bearing Supply for Daihatsu 5DK-20 Engine — Crankpin 3.5 mm and 4 mm undersized Bearings for Daihatsu 5DK-20 Engine

If the crankpin is damaged, inspection measurements and clear photographs help establish whether bearing replacement alone is sufficient or whether crankshaft grinding and repair should also be considered.

If you require crankpin bearings for a marine engine, diesel engine, or other industrial application, contact RA Power Solutions for technical assistance and bearing requirements. Please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

How a Crankshaft Grinding Machine Can Transform Your Workshop Overnight | Iraq

A reliable crankshaft is the heart of every engine, from marine diesels to heavy-duty industrial power plants. Traditionally, repairing a worn or damaged crankshaft meant removing it from the engine, transporting it to a workshop, and waiting days or even weeks for precision machining. This outdated process not only delays operations but also adds unnecessary cost and risk of damage during handling.

Today’s solution is a portable crankshaft grinding machine that lets technicians restore crankshaft journals and crankpins directly on site, without removing the crankshaft from the engine block. This onsite approach can truly transform your workshop overnight.

What Makes Portable Crankshaft Grinding Machines a Game-Changer?

Onsite Precision Grinding: Modern crankshaft grinding machines can be transported easily and operated right where the engine sites, whether on a vessel at sea, in a power plant, or in a remote engine room. This eliminates the need to dismantle, transport, or reassemble heavy engine components.
Lightweight, Easy to Operate: Designed with portability in mind, these machines are lightweight and simple to use. Technicians can quickly set up the grinder through engine inspection ports and restore crankpin or main journal surfaces with precision.
Maintains OEM Tolerances: The latest onsite crankshaft grinders control critical parameters like taper, ovality, surface finish, and run-out, ensuring journals are reliably restored to OEM specs without compromising performance or reliability.
Minimal Downtime: Traditional workshop repairs can keep an engine offline for days. Portable onsite machines reduce downtime significantly, essential for marine fleets, industrial plants, and mobile service providers needing quick turnaround
Quality & Reliability Backed by Engineering: Manufacturers like RA Power Solutions use high-grade materials (such as vibration-dampening titanium steel) and maintain strict quality controls, ensuring the equipment performs consistently even under operational conditions.

Crankshaft Grinding Machine Manufacturer

Benefits You’ll Experience

Cut repair time drastically
Save cost on transportation and workshop labor
Increase engine uptime and availability
Empower your team with skill and equipment
Quick ROI, often recouped within 2–3 repair cycles

Investing in a portable crankshaft grinding machine equips your facility with the capability to handle crankshaft servicing in-house and stay ahead of competition.

Introduction to R A Power Solutions’ Crankshaft Grinding Machine:

RA Power Solutions’ onsite grinding machine has transformed crankshaft repair. It can grind crankshafts while they are still in the block. This portable equipment enables technicians to travel the world and perform repairs on-site.

Wartsila-9L20-Engine-crankshaft-during-grinding-and-machining — Wartsila-9L20 Engine crankshaft during grinding and machining

On-Site-Crankshaft-Repair — Onsite Crankshaft Grinding and Repair

For more information on portable crankshaft grinding machines, onsite grinding of crankshafts, crankpin machines and main journal grinding equipment, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs:

1. What is a portable crankshaft grinding machine?

A machine designed to grind and restore crankshaft journals and crankpins directly onsite, without removing the crankshaft.

2. How does onsite crankshaft grinding save time?

It eliminates the need to dismantle the engine or send components to external workshops, dramatically reducing downtime.

3. What sizes of crankshafts can these machines handle?

Modern machines typically cover crankshaft diameters from small engines up to around 700 mm or more.

4. Are portable grinders precise enough for OEM standards?

Yes, these machines control tolerances like surface finish, ovality, and taper to meet original manufacturer specifications.

5. Can technicians be trained to use the machine easily?

Most suppliers offer onsite or workshop training to ensure operators can set up and run the machine effectively.

In Situ Crankshaft Grinding in Singapore

RA Power Solutions is a global leader in insitu crankshaft grinding and repair services, with a strong presence at Singapore Port. Known as one of the busiest maritime hubs in the world, Singapore demands fast, reliable, and professional marine repair solutions. RA Power Solutions provides onsite crankshaft grinding in Singapore, ensuring minimal downtime and maximum efficiency for vessels and industries operating in this vital region.

Why Engines Need In Situ Crankshaft Grinding?

Over time, crankshafts face wear and tear due to:

Continuous operation under heavy loads
Not enough lubrication or the oil film breaking
Accidental overloads or sudden stoppages
Metal fatigue and surface damage

Daihatsu 6DK-20 Crankpin Before Grinding

If you don’t repair these problems, they will cause the engine to fail. In situ crankshaft grinding restores the shape, gets rid of ovality, and polishes the surface to OEM tolerances.

Advantages of In Situ Crankshaft Grinding

Feature	Benefits
Onsite Grinding	No engine dismantling or crankshaft removal—faster repairs
High-Quality Outcomes	Compliance with or beyond OEM accuracy (taper, ovality, surface finish)
Global Reach	Services available onboard vessels and at land-based facilities
Portable Grinding Tools	Lightweight and adaptable for deployment in tight or remote settings

Why RA Power Solutions is the Preferred Choice in Singapore

Onsite Services Across Singapore: We carry out crankshaft grinding and repair jobs directly onboard vessels and at industrial sites anywhere in Singapore.

Portable, Advanced Equipment: Our machines can grind and polish crankpins and main journals of crankshafts ranging from 30 mm to 700 mm in diameter, all within Singapore waters and shipyards.

Serving Singapore’s Maritime Industry: We provide services to leading shipping companies, offshore operators, and industries at Singapore Port.

Proven Track Record: Our engineers have successfully executed hundreds of crankshaft repairs in Singapore, meeting OEM tolerances and international quality standards.

In situ crankshaft grinding under process

Case Study: Saving a Marine Engine

A shipping company faced an emergency when its main engine crankpin developed cracks mid-voyage. Instead of costly engine removal, RA Power Solutions sent an in situ grinding team onboard. Within 48 hours, the crankpin was ground undersize, fitted with new bearings, and the vessel resumed service. This saved weeks of downtime and thousands of dollars.

Trusted Expertise Backed by Decades

RA Power Solutions offers experienced onsite crankshaft grinding and repair services for all major engine manufacturers, including Caterpillar, Wartsila, Cummins, Yanmar, Daihatsu, MAN, and MAK. Our qualified technicians work in the Middle East (UAE, Saudi Arabia, Qatar, Bahrain, Kuwait, Oman,Singapore, Iran, and Iraq) and the Caribbean, including Trinidad and Tobago, Jamaica, Barbados, and Central America etc.

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

FAQs:

1. What is in situ crankshaft grinding?

In situ crankshaft grinding repairs crankpins and main journals directly on the engine block without dismantling.

2. Why do engines need in situ crankshaft grinding?

Engines need this service to fix wear, ovality, surface cracks, and fatigue caused by heavy loads or poor lubrication.

3. What size range of crankshafts can RA Power Solutions grind?

They grind crankshafts with diameters ranging from 35 mm to 700 mm.

4. How does in situ crankshaft grinding save time and cost?

It eliminates crankshaft removal and transportation, reducing downtime and repair expenses.

5. Which industries and regions does RA Power Solutions serve?

They serve marine, power generation, fertilizer, and heavy engineering industries worldwide, including the Middle East and the Caribbean.

Why Crankpin Bearings Are Important for Marine Diesel Engines?

When it comes to marine diesel engines, every component is critical to ensure smooth operation—including crankpin bearings. These frequently overlooked components are required for connecting rods to revolve smoothly around the crankpin, carry huge loads, and withstand intense combustion forces.

Tri Metal Bearing for Crank Pin and Main Journal

What Are Crankpin Bearings?

A crankpin bearing, which is also referred to as a rod bearing journal, is a precision component that is located between the crankshaft and connecting rod. Its purpose is to facilitate seamless rotation, minimize friction, and reduce wear. Plain or tri-metal varieties are frequently employed in marine applications due to their high-load capacity and durability.

Why Undersized Crankpin Bearings Matter on Ship Engines?

During engine overhauls or crankshaft grinding, standard-size bearings often no longer fit correctly. This raises a serious issue. Suppliers rarely keep undersized bearings in stock, especially for older engine models that manufacturers have discontinued.

Crankpin Bearings of Yanmar Diesel Engine

RA Power Solutions: Reliable, Precision Solutions

With over 47+ years of global service, RA Power Solutions specializes in:

Sourcing tri-metal bearings from reputable manufacturers in the UK, Germany, and Japan
Providing custom undersized crankpin and main journal bearings—even for long-discontinued engine models
Onsite crankshaft repair services anywhere in the world.

Crankpin Bearings for Different Marine Engines

At RA Power Solutions, we stock and supply standard and undersized crankpin bearings for a wide range of popular marine engines. We design our solutions to fit after crankshaft grinding. They ensure minimal downtime and reliable performance

Engine Make	Engine Model	Bearing Type	Undersize Availability	Applications
Yanmar	S185L	Tri-Metal / Plain	0.80 to 2.00 mm	Marine propulsion & power plants
Daihatsu	5DC-17	Tri-Metal	0.50 to 4.00 mm	Auxiliary engines on ships
MAN	L28/32	Tri-Metal	0.50 to 2.00 mm	Marine main engines
MAK	M32C	Tri-Metal	0.50 to 2.50 mm	Heavy-duty marine & industrial

The Role of Crankpin Bearings in Engine Longevity

Friction Reduction / Hydrodynamic Function: These bearings utilize an oil film to separate metal surfaces, significantly lowering wear and safeguarding the crankshaft.
Load & Shock Absorption: Especially critical in high-load marine engines, these bearings help dampen combustion forces while maintaining alignment.
Cost-Effective Maintenance: Designed to be replaceable, they protect expensive components like the crankshaft itself from damage. The alternative—machining new bearing surfaces—would make engine rebuilds far more costly.

crankpin bearing for daihatsu engine — Crankpin Bearing for Daihatsu Engine

For more details of the Crankpin Bearings for Marine Diesel Engines, undersized crankpin bearings, Tri-Metal Bearings, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQs:

1. What are crankpin bearings in marine diesel engines?

Crankpin bearings support the connecting rod on the crankshaft, reducing friction and wear.

2. Why are undersized crankpin bearings needed?

You need undersized crankpin bearings after crankshaft grinding. Standard bearings no longer fit.

3. Which marine engines use crankpin bearings?

MAK, MAN, Yanmar, and Daihatsu diesel engines commonly use them.

4. How do crankpin bearings extend engine life?

They minimize friction, absorb loads, and protect the crankshaft from damage.

5. Where can I buy crankpin bearings for marine diesel engines?

RA Power Solutions supplies standard, undersized, and custom crankpin bearings worldwide.

In Situ Crankshaft Grinding And Repair: Advanced Onsite Solutions by R A Power

In fields including maritime, power generation, oil and gas, and heavy industry, where engine performance affects productivity, a crankshaft failure might stop work completely. When that happens, time equals money, and typical repair procedures are no longer efficient.

This is when in situ crankshaft grinding is the better option.

We at R A Power Solutions are experts in In Situ Crankshaft Repair and Insitu Crankshaft Machining. We can do it quickly, reliably, and to OEM standards, no matter where you are in the world.

What is meant by “in situ” crankshaft grinding?

In Situ Crankshaft Grinding is a new method that lets you grind and polish broken crankpins and main journals right where they are, without taking the crankshaft out of the engine casing. This cuts down on the time, money, and hassle of taking apart and moving heavy parts.

Why Should You Choose In Situ Crankshaft Repair?

Crankshafts can be damaged by bearings that fail, overheating, being out of alignment, and not having enough lubricating oil. If these problems aren’t fixed right away, they can cause the engine to fail completely.

Insitu crankshaft repair can fix these problems before they get worse. At R A Power Solutions, we offer the following services:

Machining the crankshaft in place to fix the surface shape
Grinding crankpins in place to exact OEM specifications
In-place crankshaft grinding repair for scoring, ovality, and taper
Polishing and reconditioning on site to make the crankshaft last longer

The main services we offer

R A Power Solutions offers a full range of in situ crankshaft grinding services that are built to be accurate and dependable:

1. Machining the crankshaft in situ

We use portable CNC machining units to fix broken crankpin and main journal diameters, making sure they are perfectly round and have a smooth surface.

2. Services for repairing crankshafts in place

Our professionals offer custom crankshaft solutions on ships, offshore rigs, power plants, and distant industrial sites, from small scratches to big wear.

3. In Situ Grinding Machine for Crankshafts

Our unique grinding machines are small, very precise, and can handle crankshafts of any size, from 30 mm to 700 mm. They are made to work without vibration, so they can grind accurately even in the tightest spaces.

4. Machining and polishing of crankshaft in place

We grind and polish at the same time to get the best surface finish, lower friction, and make bearings more reliable and the engine work better overall.

The Main Benefits of Our In Situ Services no need to take apart or move it

Tolerances and surface finishes that meet OEM standards
A lot of time and money saved
Open 24 hours a day, seven days a week in more than 90 countries
Technicians with more than 47+ years of experience working around the world
Full inspection and final report paperwork

Industries We Work With

People trust our onsite crankshaft machining and repair services:

Marine transportation firms (repairs for main engines and auxiliary engines)
Power plants (fixing crankshafts on diesel and gas engines)
Oil and gas industries (FPSOs and offshore rigs)
Operators of mining and heavy equipment

We bring the answer to your site, no matter how far away or complicated your operation is.

A History of Success Around the World

Our staff has done thousands of successful repairs all over the world, from fixing things on container ships in Europe to machining and fixing crankshafts in power stations in Africa. Each job is done with an unsurpassed level of accuracy and a promise to make the engine last longer while keeping downtime to a minimum.

Work with the best in the business at crankshaft grinding. RA Power Solutions is a world leader in in situ crankshaft grinding repair. They have a long history of expertise and innovation. Because we care about quality, speed, and customer satisfaction, ship owners, plant managers, and engine manufacturers all around the world choose us as their partner.

Get in touch with us today.
Our team of professionals can fix your crankshaft so that it works at its best, no matter where you are or when you need it.

Call: +91 9582647131
Email: rajshahani@rapowersolutions.com
Website: www.rapowersolutions.com

If your crankshaft breaks, you don’t have to wait a long time or pay a lot of money to fix it. R A Power Solutions offers world-class In Situ Crankshaft Grinding Services that are fast, accurate, and can be done anywhere.

If you need to machine and polish a crankshaft on site, trust the company that sets the standard for the whole world.

R A Power Solutions: Built to Work. Made to Last.

FAQs

1. What is in situ crankshaft grinding?

It’s the onsite grinding of crankshaft journals without removing the crankshaft from the engine.

2. When is in situ crankshaft repair needed?

When crankpins or journals have wear, scoring, taper, or ovality.

3. What crankshaft sizes can R A Power Solutions handle?

From 30 mm to 700 mm in diameter.

4. What are the benefits of in situ crankshaft machining?

It saves time, avoids engine dismantling, and reduces costs.

5. Which industries use these services?

Marine, power plants, oil & gas, mining, and heavy industries.

Insitu Machining & Polishing of Crankshaft | Saves Time & Money

In the world of heavy machinery, such as marine engines, power plants, and industrial compressors, a small crankshaft defect can lead to costly breakdowns. Traditional crankshaft repair requires full engine disassembly, transporting the crankshaft to a workshop, machining, and reinstallation—all of which eat into time, budget, and productivity.

That’s where in situ machining and polishing of the crankshaft come in. Performed directly within the engine block, this technique restores crank journals and crankpins without removal, minimizing downtime, labor, and logistical headaches. On site, centimeter-level precision meets OEM standards.

Inspection of the onsite crankshaft machine

What Is Insitu Machining & Polishing of Crankshaft?

In‑place repair: A portable crankshaft grinding-polishing unit is mounted around the crank journal or link pin while the crankshaft stays installed
Precision grinding & polishing: Removes microns of material to restore geometry, followed by smooth finishing—achieving tolerances within 10–25 µm and RA surface quality per OEM specs.
Final quality checks: Use tools like MPI, micrometers, and vibration analysis to ensure balanced, defect-free journals.

On site crankshaft grinding and repair of YANMAR 8N330L-EV Auxiliary Engine

Why Our Approach Stands Out?

We’ve combined best-in-class workflows from global industry leaders and insights from leading providers, delivering:

Portable machines for 50–700 mm journals, lightweight & compact
24/7 mobilizable teams ready for emergency onsite response
Standard-compliant surface finishing (10–25 µm accuracy, OEM RA)
Advanced testing tools: MPI, vibration analysis, hardness checks, post-process QA

Fast, Precise, On Site

At RA Power Solutions, we deliver top-tier insitu machining and polishing of crankshafts directly at your location—whether on a vessel, in a power plant, or at an industrial site. Our compact, vibration‑dampening grinding machines (handling journals from 35–700 mm). It allow full repairs without dismantling the engine, even while sailing or under operation

Onsite Crankshaft Grinding and Polishing

To arrange on‑site insitu machining & polishing of crankshaft—or inquire about our portable crankshaft grinding machines and training services—contact us:
Phone: +91 95826 47131 / +91 98100 12383

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

FAQs:

Q1: What’s the accuracy of insitu polishing?

Precision of 10–25 μm, achieving OEM surface finish quality.

Q2: How long does the process take?

Typically hours to a few days, versus weeks for traditional repair.

Q3: Can it be done offshore?

Yes—fully portable systems and global teams support onshore and offshore operations.

Insitu Crankshaft Machining | 47 Years of Experience

In the realm of heavy machinery and marine engines, the crankshaft stands as a pivotal component, converting linear piston motion into rotational force. Over time, due to operational stresses, crankshafts can suffer wear, misalignment, or damage, leading to decreased efficiency or complete engine failure. Traditionally, repairing such issues necessitated disassembling the engine and transporting the crankshaft to a workshop—a process both time-consuming and costly.

**Crankpin Polishing After Inspection of Crankshaft**

Understanding In Situ Crankshaft Machining

In Situ Crankshaft Machining involves the use of specialized portable equipment to repair and restore crankshafts directly within the engine housing. This method eliminates the logistical challenges of transporting large engine components and significantly reduces downtime.

Key processes in insitu machining include:

Crankpin and Main Journal Grinding: Restoring the surface finish and dimensional accuracy of worn or damaged journals.
Polishing: Achieving the desired surface roughness to ensure optimal bearing performance.
Crack Detection and Hardness Testing: Ensuring the integrity and durability of the crankshaft repair.

Advantages of In Situ Crankshaft Machining:

Minimized Downtime: Repairs are conducted onsite, allowing machinery to return to operation swiftly.
Cost-Effective: Eliminates transportation and disassembly costs associated with traditional repair methods.
Precision and Quality: Advanced portable machining tools ensure repairs meet or exceed OEM specifications.
Versatility: Applicable to a wide range of engines across industries, including marine, power generation, and industrial sectors.

crankshaft grinding repair — Crankshaft Machining Under Process

RA Power Solutions: Pioneers in In Situ Crankshaft Machining

With nearly five decades of experience, RA Power Solutions has been at the forefront of in situ crankshaft machining. Our team of skilled technicians is equipped with state-of-the-art portable machinery, capable of handling crankshafts ranging from 35 mm to 700 mm in diameter.

Our comprehensive services include:

On-site crankshaft grinding and polishing
Crack detection using Magnetic Particle Inspection (MPI)
Hardness testing to assess material integrity
Customized repair solutions tailored to specific engine requirements

crankpin after ginding — crankpin after grinding

By choosing RA Power Solutions, clients benefit from reduced operational disruptions, cost savings, and the assurance of quality workmanship.

For more details of the On Site Crankshaft Repair, In Situ Crankshaft Machining, Onsite Crankshaft Repair, email us at info@rapowersolutions.com, call at +91-9582647131,+91 9810012383.

In Situ Crankshaft Grinding | Onsite Services | Innovative Repairs | Bangladesh

When it comes to maintaining engine performance, the crankshaft is the most important component. Found in marine vessels, power plants, and heavy machinery, it’s a crucial part of the engine. But when it gets damaged or worn out, it can bring operations to a screeching halt, leading to expensive repairs and downtime. Traditionally, fixing a crankshaft meant removing it entirely—a process that’s time-consuming, costly, and a logistical headache. RA Power Solutions is a global leader in crankshaft repair, which has brought its revolutionary in situ crankshaft grinding technology to Bangladesh. This innovative solution is changing the game for industries across the country.

MPI Test of damaged crankshaft — **Crankshaft Inspection Before Grinding and Polishing**

What is In Situ Crankshaft Grinding?

In simple terms, in situ crankshaft grinding is a way to repair crankshafts without taking them out of the engine. Instead of dismantling the entire machine and sending the crankshaft to a workshop, the repair is done right where the equipment is located. Using specialized portable grinding machines, technicians can restore the crankshaft’s journals (the smooth, polished surfaces that connect to other engine parts) to their original size and finish. This ensures the engine runs smoothly and extends its lifespan, all without the hassle of removal.

Why RA Power Solutions Stands Out

RA Power Solutions is a trusted name in the world of crankshaft repair, with nearly five decades of experience and a reputation for excellence. The company has brought its expertise to Bangladesh, offering in situ crankshaft grinding services to industries like shipping, power generation, and manufacturing. Their team of skilled technicians uses advanced crankshaft grinding machines to deliver repairs that meet or exceed OEM (Original Equipment Manufacturer) standards. This is especially valuable in Bangladesh, where industries often face logistical challenges and need quick, cost-effective solutions to keep operations running.

Crankshaft repair under process — **Crankshaft repair in process**

The Benefits of In Situ Crankshaft Grinding:

Less Downtime, More Productivity:

Since the crankshaft doesn’t need to be removed, repairs are completed much faster. This means less downtime for businesses and more time for productivity.

Precision Repairs:

RA Power Solutions uses cutting-edge technology to ensure the crankshaft is restored to its original specifications. This precision ensures the engine performs at its best and lasts longer.

On-Site Convenience:

Whether it’s a remote power plant or a ship docked at a port. RA Power Solutions can bring its portable grinding machines to the site. This flexibility is a huge advantage for industries in hard-to-reach locations.

One standout example of RA Power Solutions’ impact in Bangladesh is their work with a major power plant. The plant’s crankshaft had worn down over the years of use, threatening to shut down power generation. Instead of going through the lengthy and expensive process of removing the crankshaft. RA Power Solutions’ team performed in situ grinding onsite. They restored the crankshaft to its original condition, ensuring the plant could continue operating without interruption. This not only saved the plant from costly downtime but also demonstrated the effectiveness of in situ grinding in real-world scenarios.

As industries in Bangladesh continue to grow, the demand for efficient and reliable maintenance solutions is on the rise. In situ crankshaft grinding is perfectly positioned to meet this demand. RA Power Solutions, with its advanced technology and experienced team, is leading the charge. By adopting this innovative technique, businesses in Bangladesh can reduce repair costs, minimize downtime, and keep their operations running smoothly.

**Crankpin after grinding and polishing**

For more information regarding in situ crankshaft grinding and repair, in situ crankshaft grinding, onsite services, and crankshaft grinding and repair in Bangladesh, please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

FAQ

1. What is in situ crankshaft grinding?
In situ crankshaft grinding is a method for repairing a damaged crankshaft without removing it from the engine.

2. What are the benefits of onsite crankshaft repair?
On-site repair of the crankshaft not only saves time and reduces the cost of repairs but also ensures that the part does not need to be taken to a workshop for repairs.

3. Why is onsite crankshaft repair preferred?
Onsite crankshaft repair saves time and money by repairing the crankshaft without removing it from the engine.

4. Do you provide crankshaft repair services in Bangladesh?
Yes. RA Power Solutions offers services of in-situ crankshaft grinding, crankpin polishing, and crankshaft repairing in Bangladesh. Our engineers will visit your site and perform the services.

Wartsila | Bearing Rebabbitting | Repair | White Metal Bearings

RA Power Solutions was approached by a Russian company based in Yekaterinburg, Russia, with a request for urgent repair of Wartsila Generator Bearings.

**Wartsila Generator Bearing Babbitt White Metal Damaged**

The Generator Bearing was air freighted to us for repair. The following are the main dimensions of the Generator Bearing:

S.NO	Description	Standard Dimensions with Tolerance as Per Drawing
1.	Bearing Inner Dia (Bore)	250.00 (0.03)
2.	Bearing 2nd Inner Dia	266.00MM
3.	Bearing Outer Diameter	507.00MM
4.	Bearing White Metal Width	250.00MM
5.	Bearing Total Width	263.00MM
6.	Client	Based in Yekaterinburg, Russia

**Rough Drawing of Wartsila Generator Bearing**

**Shaft Diameter on Which Bearing is Assembled**

**Photo Showing Wartsila Made Generator Bearing**

Pre-Inspection of Generator Bearing of Wartsila :

i) The bearing was thoroughly cleaned, and the white metal was broken and chipped off from the bearing inner diameter.

ii) The bearing was subject to a shot blasting process for cleaning.

iii) Hardness and MPI for crack detection were done and were observed within limits.

iv) Rebabbitting of the generator bearing was undertaken in our plant, which has the latest breed of centrifugal equipment and machines. The bearing ID was maintained as per the drawing received from the client.

**Wartsila Generator Bearing After Rebabbitting**

**Wartsila Generator Bearing Inspection under Process**

With 47+ years of experience, RA Power Solutions undertakes rebabbitting of large bearings up to 1500 MM in diameter, as well as manufacturing new bearings according to drawings or samples.

**Wartsila Generator Bearing Ready for Dispatch**

Developing and manufacturing bearings as large as 1500 mm in diameter is challenging. RA Power Solutions’ manufacturing, precision engineering, and quality control expertise are evident in this success story. The performance and reliability of these bearings are crucial in industrial machines to ensure smooth operation.

We have regularly executed services in Dubai, Fujairah, Qatar, Saudi Arabia, Oman, Iraq, Togo, Malta, Freetown, Egypt, China, Germany, Malaysia, Iran, Indonesia, Vietnam, Jordan, Singapore, etc.

For more information regarding Rebabbitting Bearing of Wartsila, repair of Generator Bearing of Wartsila, please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.

FAQ

1. Why did the Wärtsilä generator bearing need rebabbitting?
The Wartsila generator bearing required to be rebabbitted due to rust and cracking of the white metal liner. Repairing the bearing restored its original performance and increased its service life.

2. What is bearing rebabbitting?
Bearing rebabbitting is the process of removing the damaged white metal and lining and adding new white metal. The bearing is also machined to get the right dimensions.

3. Can large Wartsila bearings be repaired instead of replaced?
Yes, the large bearings of the Wärtsilä engine may be repaired through rebabbitting in case they are capable of being repaired.

4. What are the benefits of bearing rebabbitting?
Bearing rebabbitting is an excellent way to get back to the original specifications of a bearing, increase performance, and prevent bearing replacement costs.

Crankshaft Repair of HIMSEN HYUNDAI 6H 17/28 | Worldwide

The Crankshaft Repair of the HIMSEN HYUNDAI 6H 17/28 engine was successfully repaired at MIP Mersin, Turkey. The engine, owned by an Italian company, suffered a severe breakdown due to a failure in one of its auxiliary engines.
RA Power Solutions was contacted and promptly dispatched two experienced technicians along with in situ crankshaft grinding equipment. The vessel was anchored at MIP Mersin, Turkey, where the repair was carried out.

**CR Pin of HIMSEN HYUNDAI 6H 17/28 Before Repair**

The following are the major Engine and Crankpin details:

S. No.	Engine and Crankpin Details
1.	Engine Make	HIMSEN HYUNDAI
2.	Engine Model	6H 17/28
3.	Crankpin Diameter Standard	175.00MM
4.	Crankpin Bearing Width	60.00 MM
5.	Place of Execution of Grinding of Crankpin	MIP Mersin, Turkey
6.	Name of Shipping Company	Reputed Company from Italy

Key Observations of the Crankshaft:

Visual Inspection Findings:

1. The breakdown was caused by a lubricating oil pump failure, leading to damage to all connecting rod bearings.

2. Bearing material was embedded on all six crankpins and was carefully removed.

3. After polishing, a dimensional inspection showed taper and ovality ranging from 0.22 MM to 0.86 MM.

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

SIZE OF CR PINS BEFORE REPAIR
	A	Aa	C	Cc	B	Bb	Min	STD	Ovality
CR-1	174.74	174.85	174.62	174.73	174.66	174.88	174.62	175.00	0.38 MM
CR-2	174.83	174.92	174.80	174.78	174.83	174.93	174.78	175.00	0.22 MM
CR-3	174.70	174.90	174.55	174.69	174.48	174.54	174.48	175.00	0.52 MM
CR-4	174.78	174.88	174.79	174.72	174.79	174.92	174.72	175.00	0.28 MM
CR-5	174.78	174.88	174.76	174.92	174.72	174.78	174.72	175.00	0.28 MM
CR-6	174.22	174.80	174.14	174.78	174.37	174.85	174.14	175.00	0.86 MM

4. Hardness testing revealed acceptable levels, with minor exceptions in a few spots, which were determined not to be harmful.

5. MPI testing for cracks showed minor hairline cracks, but all other parameters were within acceptable limits.

Actions Taken by RA Power Solutions Technicians:

1. The grinding of all six (6) crankpins was undertaken by our insitu crankshaft grinding machine.
2. The 3 number of crankpins diameter was reduced by 1.00 MM, and the final size was maintained as 174.00 MM.
3. The 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
	A	Aa	C	Cc	B	Bb	Min	U/S	Ovality
CR-1	173.48	173.49	173.49	173.48	173.50	173.50	173.48	173.50	0.02MM
CR-2	173.98	173.99	174.00	173.99	173.98	173.99	173.98	174.00	0.02MM
CR-3	173.49	173.50	173.50	173.48	173.49	173.50	173.48	173.50	0.02MM
CR-4	173.98	173.99	173.98	174.00	173.98	174.00	173.98	174.00	0.02MM
CR-5	173.99	173.99	173.98	174.00	173.98	173.99	173.98	174.00	0.02MM
CR-6	173.48	173.49	173.49	173.50	173.50	173.48	173.48	173.50	0.02MM

The tolerance for all six crankpins was maintained within 0.02 MM.

**HIMSEN HYUNDAI 6H 17/28 After Grinding And Polishing**

Expertise and Availability:

RA Power Solutions specializes in on-site crankshaft repair and grinding services worldwide. We have successfully executed projects in Dubai, Fujairah, Qatar, Saudi Arabia, Oman, Iraq, Togo, Malta, Freetown, Egypt, Malaysia, Iran, Indonesia, Vietnam, Jordan, Singapore, and other locations.

Our skilled technicians are available 24/7 and can be deployed on short notice. Many of our technicians also hold valid US visas, enabling us to offer services in South America, Caribbean countries, and beyond.

We also have engine crankpin bearings available in our stock for various engine models from Wärtsilä, MAN B&W, Sulzer, Yanmar, Daihatsu, MAK, Caterpillar, Cummins, Deutz, Mitsubishi, Allen, Himsen, and Niigata.

For more information about Crankshaft Repair of HIMSEN HYUNDAI 6H 17/28, crankshaft grinding and repair services, please contact us:
Email: rajshahani@rapowersolutions.com or info@rapowersolutions.com
Phone: +91 9582647131 or +91 9810012383.

FAQ

1. What caused the crankshaft damage?
The crankshaft was damaged due to the malfunctioning of the lubricating oil pump. Damage to the lubrication pump caused damage to all connecting rod bearings and all six crankpins.

2. How was the HIMSEN HYUNDAI 6H 17/28 crankshaft repaired?
The crankshaft was fixed onboard by using an in situ crankshaft grinding machine. All six crankpins were ground and polished without taking out the crankshaft from the vessel.

3. Why were hardness and MPI tests carried out?
Tests for hardness and MPI were conducted to ascertain the condition of the crankshaft. Only minor hairline cracks were found, and hence, the crankshaft was ready for in situ repairs.

4. What was the final result after crankshaft grinding?
All six crankpins were returned to the desired undersize after grinding. The final taper and ovality tolerances were ensured to be less than 0.02 mm.

5. Why choose in situ crankshaft repair?
Crankshaft repairs on the vessel save time and money since the crankshaft can be fixed without dismantling the engine.