crankshaft grinding machine manufacturers Archives

MAN Diesel Engine Maintenance & Repair Services

MAN Diesel Engine 9L28-32

RA Power Solutions was approached by a company based in Dubai regarding a problem in crankshaft faced in MAN Diesel Generating set model no. 9L28/32.

The make, model of Engine, and crankshaft details are given below:

S. NO	Crankshaft Details
1.	Engine Make	MAN B&W
2.	Engine Model	9L28/32
3.	Crank pin Diameter Standard	230 mm
4.	Crankpin Bearing Width	98 mm
5.	Place of execution of crankshaft repair	Sailing from Port of Jebel Ali Dubai to JNPT port India(Mumbai)

Repair of MAN Engine Model no. 9L28/32 Diesel Generating set Crankshaft

RA Power Solutions deputed two technicians along with an onsite crankshaft grinding machine and technicians boarded the vessel at port of Jebel Ali Dubai. On conducting the inspection following are the main observations of the crankshaft of MAN Engine Model no. 9L28/32 diesel Generating sets.

It was observed that the crankpin no. 3 of the AE#02 was damaged. The Bearing material was embedded on the crank pin diameter. After removal of the white metal from the crankpin, the dimension inspection was done and the following was observed:
- Minimum crankpin diameter observed: 229.44 mm
- Maximum crankpin diameter observed: 229.83 mm
The above readings were observed against the standard diameter of 230.00 mm.
The radius fillet and lubricating oil hole profiles were found acceptable with no damage.
Deep Bearings line marks were observed on the remaining 8 numbers of crankpins.
All the crankpins were subject to hardness test and crack check by MPI method and no abnormality was observed.
All other parameters were observed within limits.

Successful Crankshaft Repair of MAN Engine Model no. 9L28/32

The grinding of crankpin no. 3 was initially undertaken to the undersize of 1.0 mm maintaining the crankpin diameter of 229.00 mm. Since the Bearing line marks were still visible it was decided to grind further. The final size maintained after grinding and polishing was 228.50 mm which is 1.5 mm undersize.
Considering the rough surface finish and bearing line marks all the remaining crankpins were polished while using the state of art crankshaft grinding & polishing machine using the latest polishing media.
The surface finish of less than 0.20 RA value was maintained.
The ship had the 1.5 mm undersize bearing available which was assembled and the engine was put on load.

RA Power Solutions having more than 41 years of experience in extending crankshaft grinding, metal stitching, rebabbitting of bearing, and all the services related to engine repair. We undertake onsite grinding of crankshaft up to 700 mm diameter.

The main feature of our crankshaft grinding machine is that the grinding & polishing of the crankshaft can be undertaken even while sailing of the vessel. There is no requirement of holding the vessel at the port or at Anchorage.

**Crack Check of MAN Engine Model no. 9L28/32**

For more details regarding crankshaft grinding, rebabbitting of bearing, and engine block repair, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Crankshaft Grinding & Polishing Machine | Onsite Cylindrical Grinding Machine

Crankshaft is considered to be a heart of the engine. It is important that all the parameters recommended by engine manufacturers are strictly maintained for continuous and satisfactory performance of the engine.

It is observed that crankshaft failure can happen at any time in spite of excellent maintained engine. Secondly, due to continuous running of a diesel engine wear and tear, development of taper and ovality, pitting, and rough surface is developed. This needs to be corrected. By introduction of onsite crankshaft grinding and crankshaft polisher machine, RA Power Solutions has made onsite crankshaft grinding and polishing easy. Now there is no need of removing the crankshaft and sending it to the workshop for repairs.

**Crankshaft Grinding and Polishing Machine**

With our revolutionary onsite crankshaft grinding and onsite polishing machine, it is possible to do the repair crankshaft onsite.

Crankshaft grinding & crankshaft polishing machine has the following features:

The crankshaft grinding machine is available in the range of 30 mm to 700 mm which covers crankshafts of small to high-capacity engines.
The performance of onsite crankshaft grinding machine manufactured by RA Power Solutions is a proven, solution-focused approach with guaranteed results in terms of tolerances. By using onsite crankshaft grinding machine, shipping companies, diesel power plant, and drydocks have reduced the downtime considerably and save money which really matters due to competition.

**Crankshaft Grinding Machine of High Diameter**

The onsite crankshaft grinding and polishing is undertaken by the same equipment. Every time engine is open for major overhauling, crank pin and main journal of crankshaft can be polished to remove the bearing line marks and to improve the surface finish. This increases the life of bearing and avoids crankshaft from breakdown.
The crankshaft grinding and crankshaft polishing machine is designed to provide workshop quality service onsite, drydock or even while sailing of the vessel. The crankshaft grinding equipment has minimum vibrations, manufactured of titanium alloy which absorbs the vibrations. This facilitates to maintain close tolerances of crankpin and main journal of the crankshaft even while sailing of the vessel.
24/7 global support services are provided for any guidance for operation and maintenance of the onsite crankshaft grinding machine. A training program is designed and arranged onsite covering all the aspects of the operation and maintenance of the machine.
Machine is priced low and has the capability to generate high revenue in a short time. The onsite crankshaft grinding machine is supplied complete in all respect and ready to operate with consumables sufficient to repair one crankshaft.

**Crankshaft Grinding Machine for Small Diameter**

RA Power Solutions maintains a large databank of crankshafts of reputed diesel engine manufacturer and their models.

The author is Mr. Raj Shahani, Managing Director of the company. He is having 40 years of experience in grinding of crankshaft, polishing of crankshaft and all services related to repair of engines and supporting equipment. He has designed and developed the portable crankshaft grinding machine to save time and money.

We will be pleased to share more information regarding onsite crankshaft grinding and polishing machine, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

**Onsite Crankshaft Grinding Machine Ready for Dispatch**

**Accessories of Onsite Crankshaft Grinding and Polishing Machine**

Crankshaft Grinding Machine for Small Diameter – RA Power Solutions

The Introduction of Onsite Crankshaft Grinding Machine, Insitu Crankshaft Polishing and Grinding Machine, and Crankshaft Machining, there is no need of removing the Crankshaft and sending it to the work shop as now it is possible to undertake crankshaft grinding and crankshaft repair with revolutionary design of Onsite Crankshaft Grinding Machines manufactured by RA Power solutions.

Onsite grinding of crankshaft without removing it from the engine block is undertaken by taking the reference of radius fillet.

The onsite crankshaft grinding machine is placed on both side of the radius of the crankpin and tool rotates undertaking grinding and polishing of crankshaft. This process of crankshaft grinding by insitu crankshaft grinding machine is successful generally for the diameter of the crankpin of 200 mm and above having a bearing width of 125 mm minimum.

Crankshaft Grinding Equipment from 30 mm Diameter

For the smaller diameter of the crankpin, it is not possible to undertake the grinding by taking the reference of radius fillet due to the space constraints.

RA Power Solutions has introduced a compact, easy to operate onsite crankshaft grinding machine which is suitable for grinding and polishing of small diameters of the crankpin above 30 mm. The crankpin bearing width can be as small as 30 to 40 mm. With this latest technological advance crankshaft grinding machine, it is easy to grind the smaller diameter of the crankpin having smaller crankpin bearing width.

The crankshaft grinding machine has the main features of machining, grinding and polishing of the crankpin. The tolerances in terms of taper, ovality, and surface finish are maintained far better than the manufacturer’s recommendation.

Onsite Grinding Machine for Small Diameter

RA Power Solutions having 4 decades of experience in in situ crankshaft grinding have executed successfully repair of more than 11,000 crankshaft all over the world and are leaders in this field.

For your requirement of portable onsite crankshaft machine, crankshaft grinding machine, crankshaft grinding, and insitu crankshaft grinding machine you may write us at info@rapowersolutions.com.

Introduction to RA Power Solutions Pvt. Ltd., India

Company is providing on site repairs of major components of diesel engine, pumps, compressors and all type of rotary equipments mainly crankshaft, engine block, cylinder heads, liners. The repairs are undertaken by trained and experienced technicians equipped with latest breed of specially designed and developed portable machining equipments. Repairs are executed strictly as per the guidelines and tolerances stipulated by the manufacturers. Company is involved in supplying spare parts and supporting equipments used in diesel power plant. The parts and the supporting equipments are directly sourced from the OEMs and are competitively priced. White metal bearings are manufactured as per the drawing or sample. Rebabbitting of old bearing is undertaken by centrifugal process. The white metal used is sourced from the reputed companies and in house facilities for quality checks are in place.

For more details regarding onsite crankshaft grinding, in situ crankshaft grinding machine, rebabbitting of bearing, engine overhauling, and engine block repair, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.