Onsite Crankshaft Grinding & Polishing by Revolutionary Portable Equipment – RA Power Solutions

Crankshaft journal and crankshaft crank pin diameter should be grind and polished to attain a surface finish of 15 microinches or better. Again, the maintenance of taper and ovality of crankpin and crankshaft main journal has to be within the limit recommended by the manufacturer. Generally, the limits are within 0.02 to 0.05 mm, depending on the diameter of the crankpin and main journal. Till few years back it was a monopoly of few European companies undertaking onsite crankshaft grinding and crankshaft polishing jobs charging exorbitant prices from the shipping companies and the power plants who had no option but to get the job of onsite crankshaft grinding and crankshaft polishing done from them.

Portable Crankshaft Grinding Machine — **Onsite Crankshaft Grinding & Polishing Machine**

RA Power Solutions have been extending crankshaft grinding, crankshaft polishing, maintenance, and repair of high-capacity engines for the last forty years. Out of our experience, we have developed and manufacture onsite crankshaft grinding and crankshaft polishing machine having the range from 30 mm to 700 mm. The onsite crankshaft grinding machine has brought down the cost of repair of crankshaft and have broken the monopoly of the European service providers. The onsite crankshaft grinding machine manufactured by RA Power Solutions has the following features:

The onsite crankshaft grinding and polishing machine is portable, lightweight, and can be easily taken to the site all over the world.
The crankshaft grinding & polishing machine is portable and can be inserted from the inspection window. The crankpin grinding and polishing can be done without removing the crankshaft from the engine block.
The machine is designed and manufactured as per the customer’s requirement. For example, We have supplied machines for the crankshaft having a small bearing width or limited space.

Vibration Less Crankshaft Grinding Machine

The crankshaft grinder machine is capable of maintaining taper and ovality of crankpin or main journal as per the tolerances stipulated. It can achieve even a close tolerance of 0.01 mm in terms of taper and ovality. Surface finish far better than the international standard is achievable.
The onsite crankshaft grinding and crankshaft polishing machine is easy to operate and maintain. Onsite training by our experienced technicians is provided.
The cost of the crankshaft grinding and crankshaft polishing machine is low and affordable.

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

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.

Insitu Crankshaft Grinding Machine — **Crankshaft Grinding Machine Ready for Dispatch**

Onsite Grinding Machine for Small Diameter — **Onsite Grinding Machine for Small Diamete**r

We will be pleased to share more information regarding onsite crankshaft grinding machine, 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 Repair | Crankshaft Grinding | Crankshaft Reconditioning – RA Power Solutions

Onsite Crankshaft Repair, Crankshaft Grinding, and Crankshaft Reconditioning is undertaken by RA Power Solutions for the last four decades. The company has technicians who are trained to undertake onsite crankshaft repairs strictly as per manufacturer’s specifications stipulated in the manual.

All technicians have valid CDC and can travel in a short notice anywhere in the world to board the vessel. The onsite crankshaft repair and onsite crankshaft grinding equipment used by RA Power Solutions has a main structure manufactured out of Titanium steel which results to absorption of Vibration while the onsite crankshaft grinding machine is in operation in high seas with turbulence. The quality after the reconditioning and repair of crankshaft is of Great Importance and is maintained. Following checks are undertaken.

Quality of a Re-Machined Pin or Journal

The quality of a pin or journal after machining has to meet following requirements:

Geometrical tolerance in accordance with manufacturer specifications.
A blueing check has to be carried out on the re-machining surface. Blueing Shells: Min. Width equivalent to Journal or Crank-pin dimensions respectively. Min. Length is equivalent to 1/5 of the Journal or crank-pin circumference.
Required contact area: Min. 35% equally distributed over width and circumferences.
Free of hairline cracks: Journal or crank pin to be tested by mean of Magnetic Particle crack detection method.
Free of Martensite: The microstructure is to be tested for edged areas of martensite structure will replicas or micro etching with 5% nitric acid in alcohol (Nital) applied to the pin after polishing.
The maximum admissible hardness of remaining local hardsports: However such local hardsports are not tolerated around the fillets and the bores for lubrication.

**Onsite Grinding & Repair of Crankpin is in Process**

**Onsite Repair & Grinding of Crankshaft**

For more information about onsite crankshaft repair and grinding, crankshaft grinding, onsite crankpin grinding, etc. please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Repair of Crankshaft – RA Power Solutions

Reduce Cost And Breakdown Time By Onsite Repair Of Crankshaft

Onsite Crankshaft Grinding and Polishing Machine

The failure of crankpin and main journal bearing causes serious damage to the crankshaft which are as following:

Development of excessive taper and ovality in Crankshaft, Crankpin and Main Journal.
Development of crack
Abnormal increase and decrease of hardness
Loss of alignment of crankshaft resulting to the increase in deflection readings.
Development of bearing line marks, pitting, local depression
Damage of radius fillet and lube oil profile

The onsite crankshaft grinding equipment developed and manufactured by us is capable to undertake grinding and polishing of crankshaft in one setting. The tolerances after crankshaft repair are strictly maintained as per the manufacturer’s specifications.

We have a highly trained skilled team of technicians who are deputed to the plant site or on a vessel in a minimum possible time. The process followed by us for repair of crankshaft is faster, more cost-effective and convenient. It of course avoids removal of crankshaft and transport to the workshop.

The repair of crankshaft executed by RA Power Solutions Pvt. Ltd is approved by leading inspection agencies including Lloyds, DNV, and many other inspecting agencies. For more information, please write us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.