crankshaft polishing machine Archives

Onsite Crankshaft Grinding Machines – Worldwide Supplier

Onsite crankshaft grinding machine is a specialised machine that is used to manufacture, repair, and recondition crankshafts on site. The engine’s backbone is the crankshaft, which converts piston motion into rotation. Consequently, its precision is essential. Crankshafts can develop surface imperfections, erosion, or scoring over time. Through the restoration of engines to their exact proportions with a faultless finish, our machine guarantees their dependability and efficiency.

RA Power Solutions is emerging as a worldwide supplier of such machines, enabling engine and repair shops, power plants, and marine operators to carry out crankshaft repairs without removing them from the engine block.

Crankshaft Grinding Machine Ready for Dispatch

Important Features:

A finish that meets international standards is achieved through high-precision grinding, which maintains strict tolerances of less than 10 microns.
It is portable and lightweight, allowing for immediate on site crankshaft maintenance at the designated location.

User-Friendly:

This device is suitable for both novice and seasoned technicians, as it is designed to be low-maintenance and trouble-free.
A Wide Range of Applications: It is suitable for marine engines, power plants, and heavy industrial apparatus, as it does not necessitate disassembly.

Applications:

Marine Industry: Large ship engines can be repaired on site without the need for removal.
The crankshafts of diesel generators function effectively in power facilities.
Heavy engineering is suitable for the construction of buildings, mining, and industrial machinery.

Benefits:

Restoring crankshafts rather than replacing them with costly alternatives results in cost savings.
Increased Engine Life: Prevents deterioration and extends the lifespan of the engine.
The advantage of onsite repair is that it eliminates the necessity of transporting large engines to workshops.
Enhanced Performance: Ensures a smoother operation, reduced fuel consumption, and reduced friction.
Time-saving: Restoration can be completed more rapidly than the process of obtaining new materials.

Bushes Used in Crankshaft Grinding Machine

Crankshaft Grinding Machine for Big Diameter

Global Presence:

Over 200 Onsite Crankshaft Grinding Machines and crankshaft grinding and polishing equipment have been supplied globally by RA Power Solutions. Our apparatus is utilised in the following regions:

Asia: India, Saudi Arabia, the United Arab Emirates, Indonesia, Sri Lanka, and Bangladesh
Africa: Burkina Faso, Tanzania, Ghana, Kenya, Egypt, South Africa, and Nigeria
Greece, Turkey, Italy, Germany, the United Kingdom, and the Netherlands comprise Europe.
Americas: the United States, Canada, Mexico, and Brazil
Oceania comprises Australia and New Zealand.

We are committed to enhancing the profitability of transportation companies, repair shops, power plants, and heavy industries by reducing costs, minimizing downtime, and expanding our global presence.

Packing in Progress Insitu Crankshaft Grinding Machine — Crankpin Grinding Machine

For additional information about the Onsite Crankshaft Grinding Machines, Onsite Crankshaft Grinding Equipment. Please contact us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or +91 9582647131 or +91 9810012383.

FAQs:

Q1. What is onsite crankshaft grinding, and how does it work?

Onsite crankshaft grinding (in situ grinding) is a process where damaged crankpins or main journals are repaired using portable grinding machines directly at the site, without dismantling the engine.

Q2. What are the benefits of using an onsite crankshaft grinding machine?

The key benefits include reduced downtime, lower repair costs, elimination of transportation hassles, precision repairs meeting OEM standards, and extended crankshaft life.

Q3. Which industries use onsite crankshaft grinding machines?

These machines are widely used in marine, power plants, diesel generator sets, offshore platforms, heavy engineering, and industrial plants where large engines are in operation.

Q4. What crankshaft sizes can be repaired using portable grinding machines?

RA Power Solutions machines can handle a wide range of crankshaft diameters, from small engines to large marine and industrial engines, with high accuracy.

Q5. Does RA Power Solutions provide worldwide supply and training for these machines?

Yes, RA Power Solutions supplies crankshaft grinding machines globally and provides operator training to ensure easy and efficient use at any site.

Onsite crankshaft grinding machine is a specialised machine that is used to manufacture, repair, and recondition crankshafts on site. The engine’s backbone is the crankshaft, which converts piston motion into rotation. Consequently, its precision is essential. Crankshafts can develop surface imperfections, erosion, or scoring over time. Through the restoration of engines to their exact proportions … Continue reading “Onsite Crankshaft Grinding Machines – Worldwide Supplier”

Renewal of Crankshaft | Crankshaft Replacement of Engine – RA Power Solutions

Crankshaft Renewal by RA Power Solutions

Serious breakdown of Wartsila 12V32 diesel generating set installed in one of our client’s power plants in Madagascar was reported. RA Power Solutions deputed 2 senior engineers immediately to the site.

**Wartsila Diesel Generating Sets Installed in Plant**

On inspection, the following were the main observations of the Wartsila 12V32 diesel-generating sets:

The bearing of CR pin no. 2 got seized due to the lack of lubrication.
The removal of bearing from the crankpin was a tough task as the bearing material got embedded in the CR pin.
After removal of bearing, the crankpin was subject to crack detection test by MPI. Multiple cracks with open mouth were observed even in the critical area of the crankpin like lubricating oil hole, and radius fillet.
On spot grinding on cracks was done. Even after stock removal of 4 mm in terms of depth, cracks were observed. Hence, the crankshaft was rejected.

Replacement of Crankshaft

The old and rejected crankshaft was removed.
All the main journal housings, connecting rods, and cylinder liners were calibrated.
Reconditioned standard-size crankshaft was supplied by RA power and floated in the crankcase, and the engine was rebuilt.

**Removal of Crankshaft by RA Power Solutions**

After inspecting all the major parameters as per the manufacturer’s guidelines, engine was load tested to the entire satisfaction of the customer. RA Power Solutions undertakes onsite crankshaft repair of major components, overhaul, and maintenance of high-capacity diesel engines installed in power plants or on the vessel.

**Reconditioned Standard Size Crankshaft Installed**

**Inspection & Calibration of Engine Components**

For more information on crankshaft replacement of engine, crankshaft inspection, and crankshaft renewal email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Renewal by RA Power Solutions Serious breakdown of Wartsila 12V32 diesel generating set installed in one of our client’s power plants in Madagascar was reported. RA Power Solutions deputed 2 senior engineers immediately to the site. On inspection, the following were the main observations of the Wartsila 12V32 diesel-generating sets: Replacement of Crankshaft After … Continue reading “Renewal of Crankshaft | Crankshaft Replacement of Engine – RA Power Solutions”

In-Situ Crankshaft Grinding Machine | Onsite Crankshaft Machining | Onsite Crankshaft Grinding & Polishing Machine – RA Power Solutions

Crankshaft is a mechanical and important part of the engine that facilitates the performance of a conversion between reciprocating motion and rotational motion. The tolerances of the crankpin and main journal of the crankshaft are generally very close in order to have a longer life and continuous satisfactory performance of the Crankshaft without any damage. It is important that crankshaft tolerances are always maintained strictly as per original tolerances.

RA Power Solutions designs and manufactures insitu crankshaft grinding and polishing machine. The insitu crankshaft machine is of advanced technology which is designed to maintain the crank pin and main journal tolerances in terms of taper, ovality, and surface finish strictly as per the manufacturer’s specifications. There is no need of disassembly /removal of the crankshaft from the entablature. The onsite crankshaft grinding and polishing machine manufactured by RA Power Solutions is available in the range of 35 mm to 700 mm in terms of diameter.

The onsite crankshaft grinding machine is light in weight and can be easily taken to far from places all over the world. The onsite crankshaft grinding and polishing machine has the following features:

Technologically advanced crankshaft machining equipment in comparison to the conventional and old cage-type design, which is outdated.
Onsite crankshaft grinding and polishing machine does not require any reference of radius fillet for machining of the crankpin/main journal of the crankshaft.

Onsite crankshaft grinding and polishing machine frame is made out of titanium steel, which is robust and vibrationless.
With our latest onsite crankshaft grinder, machining of crankshaft up to 700 mm diameter can even be done while sailing the vessel, maintaining the close tolerance.
Onsite crankshaft grinding machine capable of maintaining close tolerance within 0.02 mm and with high surface finish far better than the international standards.
The insitu crankshaft grinding machine manufactured by RA Power Solutions can also be used for cylindrical shaft grinding and polishing and for the repair of the alternator, rotor shaft, pump shaft, intermediate shaft, mid-shaft, and turbine shaft.
Insitu crankshaft grinding and polishing equipment is easy to operate and maintain. It does not require any complicated day-to-day maintenance.
We are giving free training to the client’s technicians for the operation of this latest onsite crankshaft grinding equipment.

The cost of insitu crankshaft machining equipment is low and affordable. Highly recommended for large diesel power plants, shipping companies, and engine repair workshops. Insitu crankshaft grinding equipment is supplied in sturdy steel boxes that can be easily stored and taken from one site to another.

We have sold more than 70 crankshaft grinding machines all over the world including South America, UK, Italy, Nigeria, Singapore, the Philippines, Iran, Dubai, and various countries.

The author of this blog is Mr. Raj Shahani (Managing Director of Company). He has four decades of experience in the field of high-capacity engine repair and grinding of shaft. He has developed an onsite crankshaft grinding machine to make the grinding process easy and less time-consuming. With the development of grinding equipment, now companies can undertake grinding and repair of any rotary shaft themselves saving a huge amount of money and time.

For information regarding onsite crankshaft grinding & polishing machine, on site machining services, onsite crankshaft machining, contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft is a mechanical and important part of the engine that facilitates the performance of a conversion between reciprocating motion and rotational motion. The tolerances of the crankpin and main journal of the crankshaft are generally very close in order to have a longer life and continuous satisfactory performance of the Crankshaft without any damage. … Continue reading “In-Situ Crankshaft Grinding Machine | Onsite Crankshaft Machining | Onsite Crankshaft Grinding & Polishing Machine – RA Power Solutions”

In Situ Crankshaft Grinding Machine | Onsite Crankshaft Grinding & Polishing Machine | Crankshaft Grinder – RA Power Solutions

The in situ crankshaft grinding and crankshaft repair machine is a unique invention and is of great assistance to the shipping companies as they can not remove the crankshaft from the vessel and send it to the workshop for repair. Again, the crankshaft grinding machines installed in the workshop are not an ideal solution due to its high cost and lack of know-how to operate. RA Power Solutions manufactures and exports onsite crankshaft grinding and repair machines having a range of 35 mm to 700 mm in terms of the diameter of crankpin and main journal of the crankshaft.

Crankshaft Grinding Machine of Bigger Diameter

Crankshaft Grinding Machine has the following features:

Onsite crankshaft grinding and polishing machine is compact, lightweight, and can be inserted from the inspection window of the engine block.
It is simple in design, easy to operate, and maintain
Crankshaft grinding and polishing machine body is manufactured out of titanium steel having the property of absorbing the vibrations. With the vibration or almost zero vibration machine can also be used for crankshaft grinding and crankshaft repair while sailing of the vessel.
- All parameters and tolerances as recommended by the engine manufacturer can be strictly maintained.
With the use of onsite crankshaft grinding and polishing machine, repair can be done in one setting. Thus saving the time.
This crankshaft grinding and polishing machine is manufactured with a pneumatic or electrical drive depending on the client’s requirement.
On Job training for the operation and maintenance of the crankshaft grinding machine is extended through our experienced technicians.
Crankshaft repair machine is supplied in a toolbox and can be transported all over the world.

**Onsite Crankshaft Grinding & Repair Machine**

We have sold more than 70 crankshaft grinding machines all over the world that includes shipping companies, leading repair workshops and power plants, etc.

The author of the blog is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in solving the major issues related to repair and overhauling of engines, grinding and repair of the crankshaft, and many more related to the high capacity engine.

For more information regarding onsite machining of crankshaft, in situ crankshaft grinding repair, crankshaft grinding machines, onsite crankshaft grinding, and crankshaft polishing equipment, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

**Repair of Crankpin by Crankshaft Grinding Machine**

**Onsite Grinding Machine for Small Diameter**

RA Power Solutions manufactures in situ crankshaft grinding and polishing machine. It is a revolutionary, lightweight, easy-to-operate, and compact crankshaft grinding and crankshaft polishing machine which can undertake the repair of crankpins up to the diameter of 700 mm without removing the crankshaft from the engine block. The in situ crankshaft grinding and crankshaft repair … Continue reading “In Situ Crankshaft Grinding Machine | Onsite Crankshaft Grinding & Polishing Machine | Crankshaft Grinder – RA Power Solutions”

Onsite Crankshaft Grinding Machine for Crankshaft Repair – RA Power Solutions

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

Grinding of Crankpin using Onsite Crankshaft Grinding Machine

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

The crankshaft grinding machine has the following features:

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

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

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

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

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

Crankshaft Grinding Machine Packed in Steel Box for Dispatch

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

FAQs:

1. What is an onsite crankshaft grinding machine?

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

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

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

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

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

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

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

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

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

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

Crankshaft Repair While Sailing – RA Power Solutions

RA Power Solutions is the first company to offer crankshaft grinding and polishing services while a vessel is sailing, using onboard, vibration-free portable equipment. This enables precision repairs without removing the crankshaft from the engine block, saving valuable time and reducing costs.

Case Study: MAN 6L32/40 Repair at Sea

Engine Model: MAN 6L 32/40, crankpin diameter 290 mm, bearing width 130 mm
Vessel sailed from Savannah (USA) to Panama during repair
All six crankpins showed excessive ovality (0.10–0.25 mm), well above the 0.03 mm tolerance
Hardness tests fell within acceptable limits; MPI crack checks revealed no anomalies
Technicians ground five pins by 0.5 mm and one by 2.0 mm due to localized damage
Post-repair, RA Power specialists assisted ship’s crew with connecting rod calibration

Advantages of RA Power’s Onboard Crankshaft Repair

Utilizes latest-design portable grinding equipment, capable of close-tolerance machining. 
Enables crankshaft repair during sailing, minimizing vessel downtime and eliminating overhaul costs.
Offers 24/7 emergency service—technicians have valid seaman documentation and US visas for rapid deployment.
Provides practical, experienced advice based on over four decades in crankshaft repair, avoiding rejection or replacement.
Repairs damaged radius fillets and journals at no extra cost, offering one of the lowest-cost solutions in the industry .

Why Choose RA Power Solutions?

Speed & efficiency: finish inspections and repairs onboard in under 48 hours.
Lower costs: no need for crane lifts, dry docking, or workshop transport.
Precision & reliability: strict adherence to manufacturer tolerances.
24/7 availability: emergency interventions worldwide with minimal lead time.
Decades of trust: thousands of crankshafts repaired successfully across multiple continents .

Crankpin Ready After Grinding and Polishing

For more information about our services for grinding of crankshaft, crankshaft grinding and polishing services, crankshaft repair, and restoring crankshaft of compressor, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

RA Power Solutions is the first company to offer crankshaft grinding and polishing services while a vessel is sailing, using onboard, vibration-free portable equipment. This enables precision repairs without removing the crankshaft from the engine block, saving valuable time and reducing costs. Case Study: MAN 6L32/40 Repair at Sea Advantages of RA Power’s Onboard Crankshaft … Continue reading “Crankshaft Repair While Sailing – RA Power Solutions”